Category: Matlab
Category Archives: Matlab
Command Window No Output
Upon typing anything into the command window, the answer is only outputted into the workspace, and not into the command window as the typically expected "ans = ___" line:
Even typing gibberish generates no output or any error handling. It just prompts the next line:
Running a program with internal error handling will work, but it seems things such as type errors or other MATLAB-handled errors are ignored, and there are no ways to generate outputs, unless I force it with disp(). But I obviously don’t want to keep doing that nor is that a viable solution going forward.
A coworker was trying to help me with this and we discovered that running "evalc" in the command window generates the same problem on his MATLAB as my current issue. I don’t remember ever running "evalc" unless I ran a script at some point that had that included. There seems to be no known solution out there for how to reverse the effect of this "evalc" and/or turn it off.Upon typing anything into the command window, the answer is only outputted into the workspace, and not into the command window as the typically expected "ans = ___" line:
Even typing gibberish generates no output or any error handling. It just prompts the next line:
Running a program with internal error handling will work, but it seems things such as type errors or other MATLAB-handled errors are ignored, and there are no ways to generate outputs, unless I force it with disp(). But I obviously don’t want to keep doing that nor is that a viable solution going forward.
A coworker was trying to help me with this and we discovered that running "evalc" in the command window generates the same problem on his MATLAB as my current issue. I don’t remember ever running "evalc" unless I ran a script at some point that had that included. There seems to be no known solution out there for how to reverse the effect of this "evalc" and/or turn it off. Upon typing anything into the command window, the answer is only outputted into the workspace, and not into the command window as the typically expected "ans = ___" line:
Even typing gibberish generates no output or any error handling. It just prompts the next line:
Running a program with internal error handling will work, but it seems things such as type errors or other MATLAB-handled errors are ignored, and there are no ways to generate outputs, unless I force it with disp(). But I obviously don’t want to keep doing that nor is that a viable solution going forward.
A coworker was trying to help me with this and we discovered that running "evalc" in the command window generates the same problem on his MATLAB as my current issue. I don’t remember ever running "evalc" unless I ran a script at some point that had that included. There seems to be no known solution out there for how to reverse the effect of this "evalc" and/or turn it off. command window, output, evalc MATLAB Answers — New Questions
how to find code of power sharing between fuel cell and battery written in FCEV reference examples
Please guide me how I am able to find code of power sharing between fuel cell and battery written in controller of FCEV refernces example in MATLAB 2022Please guide me how I am able to find code of power sharing between fuel cell and battery written in controller of FCEV refernces example in MATLAB 2022 Please guide me how I am able to find code of power sharing between fuel cell and battery written in controller of FCEV refernces example in MATLAB 2022 code generation MATLAB Answers — New Questions
Symbolic expression simplification and shortening
I have an extremely long symbolic expression after simplification which I am unable to simplify further. I want to know how to reduce the expression further, or to find repeating sub expressions inside the expression which can be replaced by another variable?
For an example, my expression looks somewhat like this:
U =
108*A^2*e^7*e1^3*e2^7*h2^4 + 153*A^2*e^7*e1^5*e2^7*h2^2 + 108*A^2*e^7*e1^7*e2^3*h3^4 + 153*A^2*e^7*e1^7*e2^5*h3^2 +…
24*B^2*e^3*e1^7*e2^7*h1^4 + 95*B^2*e^5*e1^7*e2^7*h1^2 + 24*B^2*e^7*e1^3*e2^7*h2^4 + 95*B^2*e^7*e1^5*e2^7*h2^2 + …
24*B^2*e^7*e1^7*e2^3*h3^4 + 95*B^2*e^7*e1^7*e2^5*h3^2 + 9*A^2*e^2*e1^7*h1^5*h3^7 + 9*A^2*e^2*e2^7*h1^5*h2^7 +…
9*A^2*e1^2*e2^7*h1^7*h2^5 + 9*A^2*e^7*e1^2*h2^5*h3^7 + 9*A^2*e^7*e2^2*h2^7*h3^5 + 9*A^2*e1^7*e2^2*h1^7*h3^5 -…
41*B^2*e^2*e1^7*h1^5*h3^7 – 41*B^2*e^2*e2^7*h1^5*h2^7 – 12*B^2*e^4*e1^7*h1^3*h3^7 – 12*B^2*e^4*e2^7*h1^3*h2^7 -….
41*B^2*e1^2*e2^7*h1^7*h2^5 – 12*B^2*e1^4*e2^7*h1^7*h2^3 – 41*B^2*e^7*e1^2*h2^5*h3^7 – 12*B^2*e^7*e1^4*h2^3*h3^7 – …
41*B^2*e^7*e2^2*h2^7*h3^5 – 12*B^2*e^7*e2^4*h2^7*h3^3 – 41*B^2*e1^7*e2^2*h1^7*h3^5 – 12*B^2*e1^7*e2^4*h1^7*h3^3 -…
504*A^2*e^3*h1^4*h2^7*h3^7 + 9*A^2*e^5*h1^2*h2^7*h3^7 – 504*A^2*e1^3*h1^7*h2^4*h3^7 + 9*A^2*e1^5*h1^7*h2^2*h3^7 -…
504*A^2*e2^3*h1^7*h2^7*h3^4 + 9*A^2*e2^5*h1^7*h2^7*h3^2 + 2860*B^2*e^3*h1^4*h2^7*h3^7 – 377*B^2*e^5*h1^2*h2^7*h3^7 +…
2860*B^2*e1^3*h1^7*h2^4*h3^7 – 377*B^2*e1^5*h1^7*h2^2*h3^7 + 2860*B^2*e2^3*h1^7*h2^7*h3^4 – 377*B^2*e2^5*h1^7*h2^7*h3^2 +…
162*A*B*e^7*e1^7*e2^7 – 6*A*B*e^7*h2^7*h3^7 – 6*A*B*e1^7*h1^7*h3^7 – 6*A*B*e2^7*h1^7*h2^7 + 1944*A^2*e*h1^6*h2^7*h3^7 + …
1944*A^2*e1*h1^7*h2^6*h3^7 + 1944*A^2*e2*h1^7*h2^7*h3^6 – 5400*B^2*e*h1^6*h2^7*h3^7 – 5400*B^2*e1*h1^7*h2^6*h3^7 -…
245*B^2*e^6*e1^7*e2^4*h1*h3^3 + 147*B^2*e^7*e1*e2^3*h2^6*h3^4 + 48*B^2*e^7*e1*e2^5*h2^6*h3^2 – 60*B^2*e^7*e1^2*e2^6*h2^5*h3 + …
147*B^2*e^7*e1^3*e2*h2^4*h3^6 – 245*B^2*e^7*e1^4*e2^6*h2^3*h3 + 48*B^2*e^7*e1^5*e2*h2^2*h3^6 – 60*B^2*e^7*e1^6*e2^2*h2*h3^5 -…
where e , e1, e2, h1, h2, h3, A, B are the symbolic variables.I have an extremely long symbolic expression after simplification which I am unable to simplify further. I want to know how to reduce the expression further, or to find repeating sub expressions inside the expression which can be replaced by another variable?
For an example, my expression looks somewhat like this:
U =
108*A^2*e^7*e1^3*e2^7*h2^4 + 153*A^2*e^7*e1^5*e2^7*h2^2 + 108*A^2*e^7*e1^7*e2^3*h3^4 + 153*A^2*e^7*e1^7*e2^5*h3^2 +…
24*B^2*e^3*e1^7*e2^7*h1^4 + 95*B^2*e^5*e1^7*e2^7*h1^2 + 24*B^2*e^7*e1^3*e2^7*h2^4 + 95*B^2*e^7*e1^5*e2^7*h2^2 + …
24*B^2*e^7*e1^7*e2^3*h3^4 + 95*B^2*e^7*e1^7*e2^5*h3^2 + 9*A^2*e^2*e1^7*h1^5*h3^7 + 9*A^2*e^2*e2^7*h1^5*h2^7 +…
9*A^2*e1^2*e2^7*h1^7*h2^5 + 9*A^2*e^7*e1^2*h2^5*h3^7 + 9*A^2*e^7*e2^2*h2^7*h3^5 + 9*A^2*e1^7*e2^2*h1^7*h3^5 -…
41*B^2*e^2*e1^7*h1^5*h3^7 – 41*B^2*e^2*e2^7*h1^5*h2^7 – 12*B^2*e^4*e1^7*h1^3*h3^7 – 12*B^2*e^4*e2^7*h1^3*h2^7 -….
41*B^2*e1^2*e2^7*h1^7*h2^5 – 12*B^2*e1^4*e2^7*h1^7*h2^3 – 41*B^2*e^7*e1^2*h2^5*h3^7 – 12*B^2*e^7*e1^4*h2^3*h3^7 – …
41*B^2*e^7*e2^2*h2^7*h3^5 – 12*B^2*e^7*e2^4*h2^7*h3^3 – 41*B^2*e1^7*e2^2*h1^7*h3^5 – 12*B^2*e1^7*e2^4*h1^7*h3^3 -…
504*A^2*e^3*h1^4*h2^7*h3^7 + 9*A^2*e^5*h1^2*h2^7*h3^7 – 504*A^2*e1^3*h1^7*h2^4*h3^7 + 9*A^2*e1^5*h1^7*h2^2*h3^7 -…
504*A^2*e2^3*h1^7*h2^7*h3^4 + 9*A^2*e2^5*h1^7*h2^7*h3^2 + 2860*B^2*e^3*h1^4*h2^7*h3^7 – 377*B^2*e^5*h1^2*h2^7*h3^7 +…
2860*B^2*e1^3*h1^7*h2^4*h3^7 – 377*B^2*e1^5*h1^7*h2^2*h3^7 + 2860*B^2*e2^3*h1^7*h2^7*h3^4 – 377*B^2*e2^5*h1^7*h2^7*h3^2 +…
162*A*B*e^7*e1^7*e2^7 – 6*A*B*e^7*h2^7*h3^7 – 6*A*B*e1^7*h1^7*h3^7 – 6*A*B*e2^7*h1^7*h2^7 + 1944*A^2*e*h1^6*h2^7*h3^7 + …
1944*A^2*e1*h1^7*h2^6*h3^7 + 1944*A^2*e2*h1^7*h2^7*h3^6 – 5400*B^2*e*h1^6*h2^7*h3^7 – 5400*B^2*e1*h1^7*h2^6*h3^7 -…
245*B^2*e^6*e1^7*e2^4*h1*h3^3 + 147*B^2*e^7*e1*e2^3*h2^6*h3^4 + 48*B^2*e^7*e1*e2^5*h2^6*h3^2 – 60*B^2*e^7*e1^2*e2^6*h2^5*h3 + …
147*B^2*e^7*e1^3*e2*h2^4*h3^6 – 245*B^2*e^7*e1^4*e2^6*h2^3*h3 + 48*B^2*e^7*e1^5*e2*h2^2*h3^6 – 60*B^2*e^7*e1^6*e2^2*h2*h3^5 -…
where e , e1, e2, h1, h2, h3, A, B are the symbolic variables. I have an extremely long symbolic expression after simplification which I am unable to simplify further. I want to know how to reduce the expression further, or to find repeating sub expressions inside the expression which can be replaced by another variable?
For an example, my expression looks somewhat like this:
U =
108*A^2*e^7*e1^3*e2^7*h2^4 + 153*A^2*e^7*e1^5*e2^7*h2^2 + 108*A^2*e^7*e1^7*e2^3*h3^4 + 153*A^2*e^7*e1^7*e2^5*h3^2 +…
24*B^2*e^3*e1^7*e2^7*h1^4 + 95*B^2*e^5*e1^7*e2^7*h1^2 + 24*B^2*e^7*e1^3*e2^7*h2^4 + 95*B^2*e^7*e1^5*e2^7*h2^2 + …
24*B^2*e^7*e1^7*e2^3*h3^4 + 95*B^2*e^7*e1^7*e2^5*h3^2 + 9*A^2*e^2*e1^7*h1^5*h3^7 + 9*A^2*e^2*e2^7*h1^5*h2^7 +…
9*A^2*e1^2*e2^7*h1^7*h2^5 + 9*A^2*e^7*e1^2*h2^5*h3^7 + 9*A^2*e^7*e2^2*h2^7*h3^5 + 9*A^2*e1^7*e2^2*h1^7*h3^5 -…
41*B^2*e^2*e1^7*h1^5*h3^7 – 41*B^2*e^2*e2^7*h1^5*h2^7 – 12*B^2*e^4*e1^7*h1^3*h3^7 – 12*B^2*e^4*e2^7*h1^3*h2^7 -….
41*B^2*e1^2*e2^7*h1^7*h2^5 – 12*B^2*e1^4*e2^7*h1^7*h2^3 – 41*B^2*e^7*e1^2*h2^5*h3^7 – 12*B^2*e^7*e1^4*h2^3*h3^7 – …
41*B^2*e^7*e2^2*h2^7*h3^5 – 12*B^2*e^7*e2^4*h2^7*h3^3 – 41*B^2*e1^7*e2^2*h1^7*h3^5 – 12*B^2*e1^7*e2^4*h1^7*h3^3 -…
504*A^2*e^3*h1^4*h2^7*h3^7 + 9*A^2*e^5*h1^2*h2^7*h3^7 – 504*A^2*e1^3*h1^7*h2^4*h3^7 + 9*A^2*e1^5*h1^7*h2^2*h3^7 -…
504*A^2*e2^3*h1^7*h2^7*h3^4 + 9*A^2*e2^5*h1^7*h2^7*h3^2 + 2860*B^2*e^3*h1^4*h2^7*h3^7 – 377*B^2*e^5*h1^2*h2^7*h3^7 +…
2860*B^2*e1^3*h1^7*h2^4*h3^7 – 377*B^2*e1^5*h1^7*h2^2*h3^7 + 2860*B^2*e2^3*h1^7*h2^7*h3^4 – 377*B^2*e2^5*h1^7*h2^7*h3^2 +…
162*A*B*e^7*e1^7*e2^7 – 6*A*B*e^7*h2^7*h3^7 – 6*A*B*e1^7*h1^7*h3^7 – 6*A*B*e2^7*h1^7*h2^7 + 1944*A^2*e*h1^6*h2^7*h3^7 + …
1944*A^2*e1*h1^7*h2^6*h3^7 + 1944*A^2*e2*h1^7*h2^7*h3^6 – 5400*B^2*e*h1^6*h2^7*h3^7 – 5400*B^2*e1*h1^7*h2^6*h3^7 -…
245*B^2*e^6*e1^7*e2^4*h1*h3^3 + 147*B^2*e^7*e1*e2^3*h2^6*h3^4 + 48*B^2*e^7*e1*e2^5*h2^6*h3^2 – 60*B^2*e^7*e1^2*e2^6*h2^5*h3 + …
147*B^2*e^7*e1^3*e2*h2^4*h3^6 – 245*B^2*e^7*e1^4*e2^6*h2^3*h3 + 48*B^2*e^7*e1^5*e2*h2^2*h3^6 – 60*B^2*e^7*e1^6*e2^2*h2*h3^5 -…
where e , e1, e2, h1, h2, h3, A, B are the symbolic variables. symbolic, expr, collect, simplify MATLAB Answers — New Questions
Rename TIF files in a folder
Hi. I have 21841 TIF format files (in a folder) with names like: Camera_6_100fps_20240403_0956560001, and so to Camera_6_100fps_20240403_09565621841. I want to rename them to the format Camera60001 so on to Camera621841. I have tried a for loop but did not succeed. Can someone please help me with this.
Thanks.Hi. I have 21841 TIF format files (in a folder) with names like: Camera_6_100fps_20240403_0956560001, and so to Camera_6_100fps_20240403_09565621841. I want to rename them to the format Camera60001 so on to Camera621841. I have tried a for loop but did not succeed. Can someone please help me with this.
Thanks. Hi. I have 21841 TIF format files (in a folder) with names like: Camera_6_100fps_20240403_0956560001, and so to Camera_6_100fps_20240403_09565621841. I want to rename them to the format Camera60001 so on to Camera621841. I have tried a for loop but did not succeed. Can someone please help me with this.
Thanks. rename, tif files, matlab MATLAB Answers — New Questions
Calling the code behind PushButton Pressed Event
Hello, Im using appdesigner and want to call the code thats behind a pushButtom pressed event:
function GetSingleSpectrumButtonPushed(app, event)
%my Code
How would I call this code without pushing the push buttonHello, Im using appdesigner and want to call the code thats behind a pushButtom pressed event:
function GetSingleSpectrumButtonPushed(app, event)
%my Code
How would I call this code without pushing the push button Hello, Im using appdesigner and want to call the code thats behind a pushButtom pressed event:
function GetSingleSpectrumButtonPushed(app, event)
%my Code
How would I call this code without pushing the push button pushbutton, event MATLAB Answers — New Questions
How to Create an Android App to Collect Accelerometer Data and Process with MATLAB Script?
Hi everyone,
I have a MATLAB script that processes data from a CSV file containing linear accelerometer data and generates a result. I need to develop an Android app that performs the following steps:
Press a button to start.
Wait for 10 seconds.
Collect linear accelerometer data for 30 seconds and save it to a CSV file.
Once the CSV file is created, apply the MATLAB script to the file and return specific results.
Is it possible to achieve this with any MATLAB add-ons, or is there a way to execute MATLAB scripts from Kotlin in Android Studio?
Thank you very much for your help!Hi everyone,
I have a MATLAB script that processes data from a CSV file containing linear accelerometer data and generates a result. I need to develop an Android app that performs the following steps:
Press a button to start.
Wait for 10 seconds.
Collect linear accelerometer data for 30 seconds and save it to a CSV file.
Once the CSV file is created, apply the MATLAB script to the file and return specific results.
Is it possible to achieve this with any MATLAB add-ons, or is there a way to execute MATLAB scripts from Kotlin in Android Studio?
Thank you very much for your help! Hi everyone,
I have a MATLAB script that processes data from a CSV file containing linear accelerometer data and generates a result. I need to develop an Android app that performs the following steps:
Press a button to start.
Wait for 10 seconds.
Collect linear accelerometer data for 30 seconds and save it to a CSV file.
Once the CSV file is created, apply the MATLAB script to the file and return specific results.
Is it possible to achieve this with any MATLAB add-ons, or is there a way to execute MATLAB scripts from Kotlin in Android Studio?
Thank you very much for your help! transferred MATLAB Answers — New Questions
How do I check if there is a function with the same name
In addition to the functions that come with matlab, I have added some additional toolboxes, so I want to make sure that there are more than one function with the same name in my directory, who can teach me.In addition to the functions that come with matlab, I have added some additional toolboxes, so I want to make sure that there are more than one function with the same name in my directory, who can teach me. In addition to the functions that come with matlab, I have added some additional toolboxes, so I want to make sure that there are more than one function with the same name in my directory, who can teach me. function MATLAB Answers — New Questions
How can I verify an isomorphism relation between two graphs that join cube and octahedron vertices?
I have two sets of nodes, corresponding to the vertices of the cube (S1 = {1,…,8}) and the octahedron (S2 = {1,…,6}), respectively. I construct each graph G joining vertices of S_1 to vertices of S_2. Having two graphs G_1 and G_2, how can I check if there is an isomorphism relation between these two graphs?I have two sets of nodes, corresponding to the vertices of the cube (S1 = {1,…,8}) and the octahedron (S2 = {1,…,6}), respectively. I construct each graph G joining vertices of S_1 to vertices of S_2. Having two graphs G_1 and G_2, how can I check if there is an isomorphism relation between these two graphs? I have two sets of nodes, corresponding to the vertices of the cube (S1 = {1,…,8}) and the octahedron (S2 = {1,…,6}), respectively. I construct each graph G joining vertices of S_1 to vertices of S_2. Having two graphs G_1 and G_2, how can I check if there is an isomorphism relation between these two graphs? isomorphism, graph, graph theory MATLAB Answers — New Questions
Why is the MATLAB Editor blank when opening files synced with Dropbox on Mac?
I am having trouble opening MATLAB files from a Dropbox folder. After launching MATLAB via the desktop icon, attempting to open a file within MATLAB by double-clicking or using Home > Open results in a blank/white MATLAB Editor. This issue only occurs with files previously synced with Dropbox and does not occur with new files saved to the Dropbox folder. Why does this issue occur with files previously synced with Dropbox?I am having trouble opening MATLAB files from a Dropbox folder. After launching MATLAB via the desktop icon, attempting to open a file within MATLAB by double-clicking or using Home > Open results in a blank/white MATLAB Editor. This issue only occurs with files previously synced with Dropbox and does not occur with new files saved to the Dropbox folder. Why does this issue occur with files previously synced with Dropbox? I am having trouble opening MATLAB files from a Dropbox folder. After launching MATLAB via the desktop icon, attempting to open a file within MATLAB by double-clicking or using Home > Open results in a blank/white MATLAB Editor. This issue only occurs with files previously synced with Dropbox and does not occur with new files saved to the Dropbox folder. Why does this issue occur with files previously synced with Dropbox? blank, editor, dropbox MATLAB Answers — New Questions
How to produce an array that displays the common data values in other arrays?
I am trying to find a way to make a resulting array that displays all of the common values (in the same row/colomn) that multiple arrays share. I attached an example photo to explain what I mean. So, as you can see in the photo, I am trying to produce the resulting array called "Total" by using the shared values from A, B, and C.I am trying to find a way to make a resulting array that displays all of the common values (in the same row/colomn) that multiple arrays share. I attached an example photo to explain what I mean. So, as you can see in the photo, I am trying to produce the resulting array called "Total" by using the shared values from A, B, and C. I am trying to find a way to make a resulting array that displays all of the common values (in the same row/colomn) that multiple arrays share. I attached an example photo to explain what I mean. So, as you can see in the photo, I am trying to produce the resulting array called "Total" by using the shared values from A, B, and C. arrays, shared values, common values MATLAB Answers — New Questions
Nearfield Focusing, propagating a field with a known spatial field phase
Hello,
There is a fantastic page demonstrating near field focusing using the Phased Array toolbox located here: https://www.mathworks.com/help/phased/ug/examine-the-response-of-a-focused-array.html
These example use an array of emitters to define the excitation that then solves into the near field focused field. If we have an already spatially-defined complex wave input field, is there a way to propagate the field in the same way to show it focusing? Or is it possible to ‘fake’ the field using an array of closely spaced emitters and weights?Hello,
There is a fantastic page demonstrating near field focusing using the Phased Array toolbox located here: https://www.mathworks.com/help/phased/ug/examine-the-response-of-a-focused-array.html
These example use an array of emitters to define the excitation that then solves into the near field focused field. If we have an already spatially-defined complex wave input field, is there a way to propagate the field in the same way to show it focusing? Or is it possible to ‘fake’ the field using an array of closely spaced emitters and weights? Hello,
There is a fantastic page demonstrating near field focusing using the Phased Array toolbox located here: https://www.mathworks.com/help/phased/ug/examine-the-response-of-a-focused-array.html
These example use an array of emitters to define the excitation that then solves into the near field focused field. If we have an already spatially-defined complex wave input field, is there a way to propagate the field in the same way to show it focusing? Or is it possible to ‘fake’ the field using an array of closely spaced emitters and weights? near-field focusing, near-field, field propagation MATLAB Answers — New Questions
i have a txt file with ‘temp’ and ‘heat flux’ and i need to use it to calculate final temp and optimum emissivity. my code runs fine but the output file is coming out blank?
C1 = 3.74177e8;
C2 = 1.43878e4;
sig = 5.67e-8;
T_static = 229.58;
Tval = fopen(‘radiative boundary.txt’, ‘r’);
Tvalue = fscanf(Tval, ‘%f’);
fclose(Tval);
T = Tvalue;
H = hvalue;
Temp_value = [];
optimum_emsvty = [];
Temp_value = Temp_value;
optimum_emsvty = optimum_emsvty;
for i = 1:length(H)
e0 = 0.0;
e1 = 1.0;
delt = 1;
while abs(delt) > 0.000001
e = (e0 + e1) / 2.0;
c = 500;
for j = 1:5
c = c – wall(c, i, T, H, e, sig, T_static) / derivative(@wall, c, 1e-6, i, T, H, e, sig, T_static);
end
powr = integral(@(lam) power(lam, C1, C2, e), 8, 12);
delt = powr – integral(@(lam) power(lam, C1, C2, 1), 8, 12);
if delt > 0
e1 = e;
elseif delt < 0
e0 = e;
end
end
c = double(c);
end
writematrix(optimum_emsvty,’Optimum_Emissivity.txt’);
writematrix(Temp_value,’Final_Wall_Temperature.txt’);
function powr = power(lam, C1, C2, e)
powr = (e * C1) / ((lam^5) * (exp(C2 / (lam * T_static)) – 1));
endC1 = 3.74177e8;
C2 = 1.43878e4;
sig = 5.67e-8;
T_static = 229.58;
Tval = fopen(‘radiative boundary.txt’, ‘r’);
Tvalue = fscanf(Tval, ‘%f’);
fclose(Tval);
T = Tvalue;
H = hvalue;
Temp_value = [];
optimum_emsvty = [];
Temp_value = Temp_value;
optimum_emsvty = optimum_emsvty;
for i = 1:length(H)
e0 = 0.0;
e1 = 1.0;
delt = 1;
while abs(delt) > 0.000001
e = (e0 + e1) / 2.0;
c = 500;
for j = 1:5
c = c – wall(c, i, T, H, e, sig, T_static) / derivative(@wall, c, 1e-6, i, T, H, e, sig, T_static);
end
powr = integral(@(lam) power(lam, C1, C2, e), 8, 12);
delt = powr – integral(@(lam) power(lam, C1, C2, 1), 8, 12);
if delt > 0
e1 = e;
elseif delt < 0
e0 = e;
end
end
c = double(c);
end
writematrix(optimum_emsvty,’Optimum_Emissivity.txt’);
writematrix(Temp_value,’Final_Wall_Temperature.txt’);
function powr = power(lam, C1, C2, e)
powr = (e * C1) / ((lam^5) * (exp(C2 / (lam * T_static)) – 1));
end C1 = 3.74177e8;
C2 = 1.43878e4;
sig = 5.67e-8;
T_static = 229.58;
Tval = fopen(‘radiative boundary.txt’, ‘r’);
Tvalue = fscanf(Tval, ‘%f’);
fclose(Tval);
T = Tvalue;
H = hvalue;
Temp_value = [];
optimum_emsvty = [];
Temp_value = Temp_value;
optimum_emsvty = optimum_emsvty;
for i = 1:length(H)
e0 = 0.0;
e1 = 1.0;
delt = 1;
while abs(delt) > 0.000001
e = (e0 + e1) / 2.0;
c = 500;
for j = 1:5
c = c – wall(c, i, T, H, e, sig, T_static) / derivative(@wall, c, 1e-6, i, T, H, e, sig, T_static);
end
powr = integral(@(lam) power(lam, C1, C2, e), 8, 12);
delt = powr – integral(@(lam) power(lam, C1, C2, 1), 8, 12);
if delt > 0
e1 = e;
elseif delt < 0
e0 = e;
end
end
c = double(c);
end
writematrix(optimum_emsvty,’Optimum_Emissivity.txt’);
writematrix(Temp_value,’Final_Wall_Temperature.txt’);
function powr = power(lam, C1, C2, e)
powr = (e * C1) / ((lam^5) * (exp(C2 / (lam * T_static)) – 1));
end output file blank MATLAB Answers — New Questions
error
Finding keypoints…
3809 keypoints found.
Warning: Function D:siftDemoV4image.m has the same name as a MATLAB builtin. We
suggest you rename the function to avoid a potential name conflict.
> In sift at 48
In abcd at 2
Drawing SIFT keypoints …
??? Error using ==> image
Too many input arguments.
Error in ==> imagesc at 19
hh = image(varargin{1},’CDataMapping’,’scaled’);
Error in ==> showkeys at 16
imagesc(image);
Error in ==> abcd at 3
showkeys(im1,loc1);
I AM GETTING THESE ERRORS WHILE RUNNING THE FOLLOWING MATLAB CODE
function num=match(im1,im2)
[im1,des1,loc1]=sift(‘mm.pgm’);
showkeys(im1,loc1);
[im2,des2,loc2]=sift(‘nn.pgm’);
showkeys(im2,loc2);
distRatio=0.6;
des2t =des2′;
for i = 1 : size(des1,1)
dotprods = des1(i,:) * des2t;
[vals,indx] = sort(acos(dotprods));
if (vals(1) < distRatio * vals(2))
match(i) = indx(1);
else
match(i) = 0;
end
end
im3 = appendimages(im1,im2);
figure(‘Position’, [100 100 size(im3,2) size(im3,1)]);
colormap(‘gray’);
imagesc(im3);
hold on;
cols1 = size(im1,2);
for i = 1: size(des1,1)
if (match(i) > 0)
line([loc1(i,2) loc2(match(i),2)+cols1], …
[loc1(i,1) loc2(match(i),1)], ‘Color’, ‘c’);
end
end
hold off
num = sum(match >0);
fprintf(‘Found %d matches.n’, num);
HELP ME PLEASEFinding keypoints…
3809 keypoints found.
Warning: Function D:siftDemoV4image.m has the same name as a MATLAB builtin. We
suggest you rename the function to avoid a potential name conflict.
> In sift at 48
In abcd at 2
Drawing SIFT keypoints …
??? Error using ==> image
Too many input arguments.
Error in ==> imagesc at 19
hh = image(varargin{1},’CDataMapping’,’scaled’);
Error in ==> showkeys at 16
imagesc(image);
Error in ==> abcd at 3
showkeys(im1,loc1);
I AM GETTING THESE ERRORS WHILE RUNNING THE FOLLOWING MATLAB CODE
function num=match(im1,im2)
[im1,des1,loc1]=sift(‘mm.pgm’);
showkeys(im1,loc1);
[im2,des2,loc2]=sift(‘nn.pgm’);
showkeys(im2,loc2);
distRatio=0.6;
des2t =des2′;
for i = 1 : size(des1,1)
dotprods = des1(i,:) * des2t;
[vals,indx] = sort(acos(dotprods));
if (vals(1) < distRatio * vals(2))
match(i) = indx(1);
else
match(i) = 0;
end
end
im3 = appendimages(im1,im2);
figure(‘Position’, [100 100 size(im3,2) size(im3,1)]);
colormap(‘gray’);
imagesc(im3);
hold on;
cols1 = size(im1,2);
for i = 1: size(des1,1)
if (match(i) > 0)
line([loc1(i,2) loc2(match(i),2)+cols1], …
[loc1(i,1) loc2(match(i),1)], ‘Color’, ‘c’);
end
end
hold off
num = sum(match >0);
fprintf(‘Found %d matches.n’, num);
HELP ME PLEASE Finding keypoints…
3809 keypoints found.
Warning: Function D:siftDemoV4image.m has the same name as a MATLAB builtin. We
suggest you rename the function to avoid a potential name conflict.
> In sift at 48
In abcd at 2
Drawing SIFT keypoints …
??? Error using ==> image
Too many input arguments.
Error in ==> imagesc at 19
hh = image(varargin{1},’CDataMapping’,’scaled’);
Error in ==> showkeys at 16
imagesc(image);
Error in ==> abcd at 3
showkeys(im1,loc1);
I AM GETTING THESE ERRORS WHILE RUNNING THE FOLLOWING MATLAB CODE
function num=match(im1,im2)
[im1,des1,loc1]=sift(‘mm.pgm’);
showkeys(im1,loc1);
[im2,des2,loc2]=sift(‘nn.pgm’);
showkeys(im2,loc2);
distRatio=0.6;
des2t =des2′;
for i = 1 : size(des1,1)
dotprods = des1(i,:) * des2t;
[vals,indx] = sort(acos(dotprods));
if (vals(1) < distRatio * vals(2))
match(i) = indx(1);
else
match(i) = 0;
end
end
im3 = appendimages(im1,im2);
figure(‘Position’, [100 100 size(im3,2) size(im3,1)]);
colormap(‘gray’);
imagesc(im3);
hold on;
cols1 = size(im1,2);
for i = 1: size(des1,1)
if (match(i) > 0)
line([loc1(i,2) loc2(match(i),2)+cols1], …
[loc1(i,1) loc2(match(i),1)], ‘Color’, ‘c’);
end
end
hold off
num = sum(match >0);
fprintf(‘Found %d matches.n’, num);
HELP ME PLEASE redefining a built-in function MATLAB Answers — New Questions
How to draw an uncertain number of sub-images in one coordinate in app designer?
I can use matlab script to draw VMD decomposition diagram, but I don’t know how to draw such a diagram in one coordinate in app designer? Below is the code in my matlab script and the picture I need to draw. Thank you very much for your time.
[m,n]=size(u);
figure
subplot(m+1,1,1);
plot(DATA.data,’k’);grid on;
title(‘Original data’);
for i = 1:m
subplot(m+1,1,i+1);
plot(u(i,:),’k’);
title([‘Signal’,num2str(i-1),’:’]);
endI can use matlab script to draw VMD decomposition diagram, but I don’t know how to draw such a diagram in one coordinate in app designer? Below is the code in my matlab script and the picture I need to draw. Thank you very much for your time.
[m,n]=size(u);
figure
subplot(m+1,1,1);
plot(DATA.data,’k’);grid on;
title(‘Original data’);
for i = 1:m
subplot(m+1,1,i+1);
plot(u(i,:),’k’);
title([‘Signal’,num2str(i-1),’:’]);
end I can use matlab script to draw VMD decomposition diagram, but I don’t know how to draw such a diagram in one coordinate in app designer? Below is the code in my matlab script and the picture I need to draw. Thank you very much for your time.
[m,n]=size(u);
figure
subplot(m+1,1,1);
plot(DATA.data,’k’);grid on;
title(‘Original data’);
for i = 1:m
subplot(m+1,1,i+1);
plot(u(i,:),’k’);
title([‘Signal’,num2str(i-1),’:’]);
end appdesigner MATLAB Answers — New Questions
Want to get the maxima and minima not thr first maxima and minima. if i remove the 1 in this max_indices(1) they give error.
Want to get the maxima and minima not thr first maxima and minima. if i remove the 1 in this max_indices(1) they give error.
run("TestCode.m")Want to get the maxima and minima not thr first maxima and minima. if i remove the 1 in this max_indices(1) they give error.
run("TestCode.m") Want to get the maxima and minima not thr first maxima and minima. if i remove the 1 in this max_indices(1) they give error.
run("TestCode.m") islocalmaxima and minma MATLAB Answers — New Questions
how to use NARX tool for a vectors of input to output?
I have a input of matrix sample N = 100 with time span of 30 seconds with discretization with dt = 0.01. Input of and for and the corresponding output for . How can I use the "NARX Neural Networks" for the above data. Please refer above DATA.mat file . How could the vector 100 samples are used for training and validate the trained model?I have a input of matrix sample N = 100 with time span of 30 seconds with discretization with dt = 0.01. Input of and for and the corresponding output for . How can I use the "NARX Neural Networks" for the above data. Please refer above DATA.mat file . How could the vector 100 samples are used for training and validate the trained model? I have a input of matrix sample N = 100 with time span of 30 seconds with discretization with dt = 0.01. Input of and for and the corresponding output for . How can I use the "NARX Neural Networks" for the above data. Please refer above DATA.mat file . How could the vector 100 samples are used for training and validate the trained model? narxnet, deep learning with time series MATLAB Answers — New Questions
Table comparing Session Based Interface and Legacy Interface on daq toolbox
Is there a complete list of daq commands that shows the Session-based command for corresponding Legacy Interface ? For example, ‘daqhwinfo’ there is a small grey box note that says:
_"Note: You cannot use the legacy interface on 64–bit MATLAB. See Using the Session-Based Interface to acquire and generate data."_
It would be nice if this links to corresponding Session-based command instead of leaving us trying to figure it out. Very annoying.
Does such a list exist where I can search for legacy command and find corresponding session-based command ?Is there a complete list of daq commands that shows the Session-based command for corresponding Legacy Interface ? For example, ‘daqhwinfo’ there is a small grey box note that says:
_"Note: You cannot use the legacy interface on 64–bit MATLAB. See Using the Session-Based Interface to acquire and generate data."_
It would be nice if this links to corresponding Session-based command instead of leaving us trying to figure it out. Very annoying.
Does such a list exist where I can search for legacy command and find corresponding session-based command ? Is there a complete list of daq commands that shows the Session-based command for corresponding Legacy Interface ? For example, ‘daqhwinfo’ there is a small grey box note that says:
_"Note: You cannot use the legacy interface on 64–bit MATLAB. See Using the Session-Based Interface to acquire and generate data."_
It would be nice if this links to corresponding Session-based command instead of leaving us trying to figure it out. Very annoying.
Does such a list exist where I can search for legacy command and find corresponding session-based command ? ni-daq, session based interface, legacy interface, daq toolbox MATLAB Answers — New Questions
Model of two differential equations of RLC circuit (Simulink)
Hello,
I have made an RLC circuit and I want to simulate this system. I know, that I can model the exact same circuit, but I want to get graphs from my two differential equations. I am kinda struggling with the model of those equations. I have already read a lot of articles, but i still can not figure out, how to apply the knowledge from those articles and from my self-studying.
I have those differential equations:
where U is voltage (I will probably use sinwave block); i1, i2, i3 are 3 currents.
Could somebody, please, give me a hint or any simillar example of Simulink model?Hello,
I have made an RLC circuit and I want to simulate this system. I know, that I can model the exact same circuit, but I want to get graphs from my two differential equations. I am kinda struggling with the model of those equations. I have already read a lot of articles, but i still can not figure out, how to apply the knowledge from those articles and from my self-studying.
I have those differential equations:
where U is voltage (I will probably use sinwave block); i1, i2, i3 are 3 currents.
Could somebody, please, give me a hint or any simillar example of Simulink model? Hello,
I have made an RLC circuit and I want to simulate this system. I know, that I can model the exact same circuit, but I want to get graphs from my two differential equations. I am kinda struggling with the model of those equations. I have already read a lot of articles, but i still can not figure out, how to apply the knowledge from those articles and from my self-studying.
I have those differential equations:
where U is voltage (I will probably use sinwave block); i1, i2, i3 are 3 currents.
Could somebody, please, give me a hint or any simillar example of Simulink model? simulink, rlc, two differential equations, matlab, graphs, voltage, current MATLAB Answers — New Questions
Unable to resolve the name audio.internal.visualizer.Filter.
Hello!
I keep getting the following error when executing the script AudioSystemToolboxIntroMain.m that accopanies the webinar "Real-time Audio Processing for Algorithm Prototyping and Custom Measurements" (https://se.mathworks.com/videos/real-time-audio-processing-for-algorithm-prototyping-and-custom-measurements-121075.html):
(Executing RealTimeStreaming.m works.)
Unable to resolve the name audio.internal.visualizer.Filter.
Error in ThreeBandParamEQ/visualize (line 122)
obj.visualObj = audio.internal.visualizer.Filter(coeffs,…
Error in AudioSystemToolboxIntroMain (line 10)
visualize(eq)
I believe that I have all required toolboxes installed:
>> ver
—————————————————————————————————–
MATLAB Version: 9.9.0.1467703 (R2020b)
MATLAB License Number: XXX
Operating System: Mac OS X Version: 10.15.7 Build: 19H2
Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
—————————————————————————————————–
MATLAB Version 9.9 (R2020b)
Simulink Version 10.2 (R2020b)
Antenna Toolbox Version 4.3 (R2020b)
Audio Toolbox Version 2.3 (R2020b)
Computer Vision Toolbox Version 9.3 (R2020b)
Curve Fitting Toolbox Version 3.5.12 (R2020b)
DSP System Toolbox Version 9.11 (R2020b)
Image Acquisition Toolbox Version 6.3 (R2020b)
Image Processing Toolbox Version 11.2 (R2020b)
MATLAB Compiler Version 8.1 (R2020b)
MATLAB Compiler SDK Version 6.9 (R2020b)
Optimization Toolbox Version 9.0 (R2020b)
Phased Array System Toolbox Version 4.4 (R2020b)
Signal Processing Toolbox Version 8.5 (R2020b)
Statistics and Machine Learning Toolbox Version 12.0 (R2020b)
Symbolic Math Toolbox Version 8.6 (R2020b)
I’ve tried
rehash toolboxcache
and reverting pathdef.m without success.
Thanks!Hello!
I keep getting the following error when executing the script AudioSystemToolboxIntroMain.m that accopanies the webinar "Real-time Audio Processing for Algorithm Prototyping and Custom Measurements" (https://se.mathworks.com/videos/real-time-audio-processing-for-algorithm-prototyping-and-custom-measurements-121075.html):
(Executing RealTimeStreaming.m works.)
Unable to resolve the name audio.internal.visualizer.Filter.
Error in ThreeBandParamEQ/visualize (line 122)
obj.visualObj = audio.internal.visualizer.Filter(coeffs,…
Error in AudioSystemToolboxIntroMain (line 10)
visualize(eq)
I believe that I have all required toolboxes installed:
>> ver
—————————————————————————————————–
MATLAB Version: 9.9.0.1467703 (R2020b)
MATLAB License Number: XXX
Operating System: Mac OS X Version: 10.15.7 Build: 19H2
Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
—————————————————————————————————–
MATLAB Version 9.9 (R2020b)
Simulink Version 10.2 (R2020b)
Antenna Toolbox Version 4.3 (R2020b)
Audio Toolbox Version 2.3 (R2020b)
Computer Vision Toolbox Version 9.3 (R2020b)
Curve Fitting Toolbox Version 3.5.12 (R2020b)
DSP System Toolbox Version 9.11 (R2020b)
Image Acquisition Toolbox Version 6.3 (R2020b)
Image Processing Toolbox Version 11.2 (R2020b)
MATLAB Compiler Version 8.1 (R2020b)
MATLAB Compiler SDK Version 6.9 (R2020b)
Optimization Toolbox Version 9.0 (R2020b)
Phased Array System Toolbox Version 4.4 (R2020b)
Signal Processing Toolbox Version 8.5 (R2020b)
Statistics and Machine Learning Toolbox Version 12.0 (R2020b)
Symbolic Math Toolbox Version 8.6 (R2020b)
I’ve tried
rehash toolboxcache
and reverting pathdef.m without success.
Thanks! Hello!
I keep getting the following error when executing the script AudioSystemToolboxIntroMain.m that accopanies the webinar "Real-time Audio Processing for Algorithm Prototyping and Custom Measurements" (https://se.mathworks.com/videos/real-time-audio-processing-for-algorithm-prototyping-and-custom-measurements-121075.html):
(Executing RealTimeStreaming.m works.)
Unable to resolve the name audio.internal.visualizer.Filter.
Error in ThreeBandParamEQ/visualize (line 122)
obj.visualObj = audio.internal.visualizer.Filter(coeffs,…
Error in AudioSystemToolboxIntroMain (line 10)
visualize(eq)
I believe that I have all required toolboxes installed:
>> ver
—————————————————————————————————–
MATLAB Version: 9.9.0.1467703 (R2020b)
MATLAB License Number: XXX
Operating System: Mac OS X Version: 10.15.7 Build: 19H2
Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
—————————————————————————————————–
MATLAB Version 9.9 (R2020b)
Simulink Version 10.2 (R2020b)
Antenna Toolbox Version 4.3 (R2020b)
Audio Toolbox Version 2.3 (R2020b)
Computer Vision Toolbox Version 9.3 (R2020b)
Curve Fitting Toolbox Version 3.5.12 (R2020b)
DSP System Toolbox Version 9.11 (R2020b)
Image Acquisition Toolbox Version 6.3 (R2020b)
Image Processing Toolbox Version 11.2 (R2020b)
MATLAB Compiler Version 8.1 (R2020b)
MATLAB Compiler SDK Version 6.9 (R2020b)
Optimization Toolbox Version 9.0 (R2020b)
Phased Array System Toolbox Version 4.4 (R2020b)
Signal Processing Toolbox Version 8.5 (R2020b)
Statistics and Machine Learning Toolbox Version 12.0 (R2020b)
Symbolic Math Toolbox Version 8.6 (R2020b)
I’ve tried
rehash toolboxcache
and reverting pathdef.m without success.
Thanks! audio MATLAB Answers — New Questions
how to get the pixel value of histogram?
Hello
i wants to delete or make some pixel zero , according to the bins.
im = imread (‘image’);
hsv_im = rgb2hsv(im);
h = hsv_im(:,:,1)
[pixelCount, grayLevels] = hist(h(:), 360);
pixelCount(20:30)=0;
Now i want to get my ‘Hue’ Matrix with same pixel position and zeros between the bin values from 20 to 30.Hello
i wants to delete or make some pixel zero , according to the bins.
im = imread (‘image’);
hsv_im = rgb2hsv(im);
h = hsv_im(:,:,1)
[pixelCount, grayLevels] = hist(h(:), 360);
pixelCount(20:30)=0;
Now i want to get my ‘Hue’ Matrix with same pixel position and zeros between the bin values from 20 to 30. Hello
i wants to delete or make some pixel zero , according to the bins.
im = imread (‘image’);
hsv_im = rgb2hsv(im);
h = hsv_im(:,:,1)
[pixelCount, grayLevels] = hist(h(:), 360);
pixelCount(20:30)=0;
Now i want to get my ‘Hue’ Matrix with same pixel position and zeros between the bin values from 20 to 30. image processing, digital image processing, image analysis, image segmentation MATLAB Answers — New Questions