Tag Archives: matlab
How to partition data in cells for validation in machine learning model?
Hello there , I have training data for 4 trials stores in a 4×1 cell named "trainingdataX" and "trainingdataY" as whoen here and I am trying to pull out 15 percent of all this data for validation purposes and store it in variables "Xval" and "Yval". How would I be able to do this if the data is stored in a cells corresponding to the trials and ensure the corresponding value is partioned out for validation too? Any help is greatly appreciated!
%Exclude Data for Val
rng(‘default’)
n = %im not sure what to put here to have it pull data from each of the 4 trials
partition = cvpartition(n,’Holdout’,0.15);
idxTrain = training(partition);
FinalTrainX = trainingdataX(idxTrain,:)
FinalTrainY = trainingdataY(idxTrain,:)
idxNew = test(partition);
Xval = trainingdataX(idxNew,:)
Yval = trainingdataY(idxNew,:)Hello there , I have training data for 4 trials stores in a 4×1 cell named "trainingdataX" and "trainingdataY" as whoen here and I am trying to pull out 15 percent of all this data for validation purposes and store it in variables "Xval" and "Yval". How would I be able to do this if the data is stored in a cells corresponding to the trials and ensure the corresponding value is partioned out for validation too? Any help is greatly appreciated!
%Exclude Data for Val
rng(‘default’)
n = %im not sure what to put here to have it pull data from each of the 4 trials
partition = cvpartition(n,’Holdout’,0.15);
idxTrain = training(partition);
FinalTrainX = trainingdataX(idxTrain,:)
FinalTrainY = trainingdataY(idxTrain,:)
idxNew = test(partition);
Xval = trainingdataX(idxNew,:)
Yval = trainingdataY(idxNew,:) Hello there , I have training data for 4 trials stores in a 4×1 cell named "trainingdataX" and "trainingdataY" as whoen here and I am trying to pull out 15 percent of all this data for validation purposes and store it in variables "Xval" and "Yval". How would I be able to do this if the data is stored in a cells corresponding to the trials and ensure the corresponding value is partioned out for validation too? Any help is greatly appreciated!
%Exclude Data for Val
rng(‘default’)
n = %im not sure what to put here to have it pull data from each of the 4 trials
partition = cvpartition(n,’Holdout’,0.15);
idxTrain = training(partition);
FinalTrainX = trainingdataX(idxTrain,:)
FinalTrainY = trainingdataY(idxTrain,:)
idxNew = test(partition);
Xval = trainingdataX(idxNew,:)
Yval = trainingdataY(idxNew,:) machine learning, data partition, validation MATLAB Answers — New Questions
Managing custom classes, mat-files, and namespaces
Say I have a (simple) custom class, defined with a classdef. Let’s say it’s defined in my_class.m
I then generate a bunch of objects of the class, and save the results to a matfile: my_data.mat.
I then want to reorganize my code, either by:
renaming my class (but otherwise keeping the definition the same). Now I have my_class_ver1.m as the classdef.
introducing namespaces. Here, I’ve moved the file, my_class.m, into a namespace directory, i.e.,: +ver1/my_class.m
Is there any way to provide a class (re)mapping when loading the existing my_data.mat file? As it stands, Matlab just loads the file as an int a uint32 array. For #2, just importing the namespace (import ver1.* or import ver1.my_class) does not work.Say I have a (simple) custom class, defined with a classdef. Let’s say it’s defined in my_class.m
I then generate a bunch of objects of the class, and save the results to a matfile: my_data.mat.
I then want to reorganize my code, either by:
renaming my class (but otherwise keeping the definition the same). Now I have my_class_ver1.m as the classdef.
introducing namespaces. Here, I’ve moved the file, my_class.m, into a namespace directory, i.e.,: +ver1/my_class.m
Is there any way to provide a class (re)mapping when loading the existing my_data.mat file? As it stands, Matlab just loads the file as an int a uint32 array. For #2, just importing the namespace (import ver1.* or import ver1.my_class) does not work. Say I have a (simple) custom class, defined with a classdef. Let’s say it’s defined in my_class.m
I then generate a bunch of objects of the class, and save the results to a matfile: my_data.mat.
I then want to reorganize my code, either by:
renaming my class (but otherwise keeping the definition the same). Now I have my_class_ver1.m as the classdef.
introducing namespaces. Here, I’ve moved the file, my_class.m, into a namespace directory, i.e.,: +ver1/my_class.m
Is there any way to provide a class (re)mapping when loading the existing my_data.mat file? As it stands, Matlab just loads the file as an int a uint32 array. For #2, just importing the namespace (import ver1.* or import ver1.my_class) does not work. classdef, namespace, classes, import MATLAB Answers — New Questions
How to implement the radiation boundary condition for the object in vacuum?
I am trying to simulate heat transfer in the object that is mounted inside the vacuum chamber using the PDE toolbox. The thing is cooled internally with water running through the pipe inside. But I suppose that it can also loose some energy via the radiation from the boundaries into the surrounding vacuum. The question is how to program this radiative BC into vacuum correctly in Matlab using the PDE toolbox. Another question is if this radiative heat loss is even worth taking it into account, if it would be significant compared to other cooling mechanisms.I am trying to simulate heat transfer in the object that is mounted inside the vacuum chamber using the PDE toolbox. The thing is cooled internally with water running through the pipe inside. But I suppose that it can also loose some energy via the radiation from the boundaries into the surrounding vacuum. The question is how to program this radiative BC into vacuum correctly in Matlab using the PDE toolbox. Another question is if this radiative heat loss is even worth taking it into account, if it would be significant compared to other cooling mechanisms. I am trying to simulate heat transfer in the object that is mounted inside the vacuum chamber using the PDE toolbox. The thing is cooled internally with water running through the pipe inside. But I suppose that it can also loose some energy via the radiation from the boundaries into the surrounding vacuum. The question is how to program this radiative BC into vacuum correctly in Matlab using the PDE toolbox. Another question is if this radiative heat loss is even worth taking it into account, if it would be significant compared to other cooling mechanisms. pde, boundary condition, vacuum, heat transfer, radiation MATLAB Answers — New Questions
How can I reassign clusters based on similarity or any other method?
Description: I have data in cell format obtained from K-means clustering. The main issue is that similar clusters are being split into two separate clusters. I need to reassign the clusters based on a similarity or anyother method. Specifically, if two clusters have the same features, they should be combined into one cluster. Conversely, if a cluster has two different features, it should be split so that each subcluster has similar features. Each cell has subcells with first four columns representing important features. For example, clusters 3 and 6 have almost similar features, while cluster 2 has two different features. How can I achieve this reassignment?Description: I have data in cell format obtained from K-means clustering. The main issue is that similar clusters are being split into two separate clusters. I need to reassign the clusters based on a similarity or anyother method. Specifically, if two clusters have the same features, they should be combined into one cluster. Conversely, if a cluster has two different features, it should be split so that each subcluster has similar features. Each cell has subcells with first four columns representing important features. For example, clusters 3 and 6 have almost similar features, while cluster 2 has two different features. How can I achieve this reassignment? Description: I have data in cell format obtained from K-means clustering. The main issue is that similar clusters are being split into two separate clusters. I need to reassign the clusters based on a similarity or anyother method. Specifically, if two clusters have the same features, they should be combined into one cluster. Conversely, if a cluster has two different features, it should be split so that each subcluster has similar features. Each cell has subcells with first four columns representing important features. For example, clusters 3 and 6 have almost similar features, while cluster 2 has two different features. How can I achieve this reassignment? array, classification, machine learning, deep learning, matlab, arrays, cell array, cell arrays, algorithm, data, image processing, code, for, function, for loop, variables, double, matlab function, time series, cell, workspace MATLAB Answers — New Questions
Understanding and interpreting cut-off frequency RMSE plots
I have managed to write a code to filter my data at multiple filter frequencies using a low pass butterworth filter. I have then plotted these but I am struggling to understand how to interpret them to decide what frequency to filter my data at.I have managed to write a code to filter my data at multiple filter frequencies using a low pass butterworth filter. I have then plotted these but I am struggling to understand how to interpret them to decide what frequency to filter my data at. I have managed to write a code to filter my data at multiple filter frequencies using a low pass butterworth filter. I have then plotted these but I am struggling to understand how to interpret them to decide what frequency to filter my data at. rmse, residual analysis, filter frequency MATLAB Answers — New Questions
Direction of force input for a prismatic joint
Does the force input for actuation of a prismatic joint act in the opposite direction when a negative value is applied compared to a positive value?Does the force input for actuation of a prismatic joint act in the opposite direction when a negative value is applied compared to a positive value? Does the force input for actuation of a prismatic joint act in the opposite direction when a negative value is applied compared to a positive value? simulink, simscape MATLAB Answers — New Questions
How can I save the text in the model workspace variable description?
I want to save in as a string variable the text in the description of the simulink parameter that is in the simulink model workspace (image)I want to save in as a string variable the text in the description of the simulink parameter that is in the simulink model workspace (image) I want to save in as a string variable the text in the description of the simulink parameter that is in the simulink model workspace (image) simulink, model workspace, variable description MATLAB Answers — New Questions
Which Algorithm “pidtune()” function used for finding PID gains?
I am working on tunning the PID gains for a flyback converter. I am curious about what methods out of the popular lmethods ( Ziegler–Nichols, Aström’s AMIGO, Skogestad’s Internal Model Control, and Chien-Hrones-Reswick) the "pidtune()" function used to give the PID gains.
I also go throw the pidtune.m file using the "edit pidtune" command in the MATLAB script to have a look what is going on inside the pidtune function. After going through several iteration line by line I am still unable to figure out the answer. To me its look like a kind of heuristic algorithm.
I am seeking assistance from all the community.
RegardsI am working on tunning the PID gains for a flyback converter. I am curious about what methods out of the popular lmethods ( Ziegler–Nichols, Aström’s AMIGO, Skogestad’s Internal Model Control, and Chien-Hrones-Reswick) the "pidtune()" function used to give the PID gains.
I also go throw the pidtune.m file using the "edit pidtune" command in the MATLAB script to have a look what is going on inside the pidtune function. After going through several iteration line by line I am still unable to figure out the answer. To me its look like a kind of heuristic algorithm.
I am seeking assistance from all the community.
Regards I am working on tunning the PID gains for a flyback converter. I am curious about what methods out of the popular lmethods ( Ziegler–Nichols, Aström’s AMIGO, Skogestad’s Internal Model Control, and Chien-Hrones-Reswick) the "pidtune()" function used to give the PID gains.
I also go throw the pidtune.m file using the "edit pidtune" command in the MATLAB script to have a look what is going on inside the pidtune function. After going through several iteration line by line I am still unable to figure out the answer. To me its look like a kind of heuristic algorithm.
I am seeking assistance from all the community.
Regards pid, controller tunning MATLAB Answers — New Questions
Macroscopic Specimen image Sectioning
Hi everyone,
Would I be able to make an image similar to this in MATLAB?Hi everyone,
Would I be able to make an image similar to this in MATLAB? Hi everyone,
Would I be able to make an image similar to this in MATLAB? image analysis, image processing MATLAB Answers — New Questions
Use of private method and properties from a MATLAB class to a MATLAB function
I have a MATLAB file and there are couple of functions defined, I split two of the functions into new function files and invoked them in the main class file, so now the issue is there are some methods functions and properties which are set to private, so because of this the new function files arent able to get those methods and properties, the option I had is to keep Access/Set Access to public, but that is not an expectation here,
So, can anyone help or suggest here without making access change how to fix this issue, Any help is highly appreciated.I have a MATLAB file and there are couple of functions defined, I split two of the functions into new function files and invoked them in the main class file, so now the issue is there are some methods functions and properties which are set to private, so because of this the new function files arent able to get those methods and properties, the option I had is to keep Access/Set Access to public, but that is not an expectation here,
So, can anyone help or suggest here without making access change how to fix this issue, Any help is highly appreciated. I have a MATLAB file and there are couple of functions defined, I split two of the functions into new function files and invoked them in the main class file, so now the issue is there are some methods functions and properties which are set to private, so because of this the new function files arent able to get those methods and properties, the option I had is to keep Access/Set Access to public, but that is not an expectation here,
So, can anyone help or suggest here without making access change how to fix this issue, Any help is highly appreciated. matlab code, script, class MATLAB Answers — New Questions
Error Installing MATLAB engine API for Python
I am trying to install the MATLAB engine for Python on my computer and when I write
python setup.py install
I get the following error:
error: could not create ‘build’: Access is denied
The same error also occurs when I try _’builddir’_
I also have administrator access on my computer so I am confused as to why I am being denied.
Any help would be greatly appreciated!I am trying to install the MATLAB engine for Python on my computer and when I write
python setup.py install
I get the following error:
error: could not create ‘build’: Access is denied
The same error also occurs when I try _’builddir’_
I also have administrator access on my computer so I am confused as to why I am being denied.
Any help would be greatly appreciated! I am trying to install the MATLAB engine for Python on my computer and when I write
python setup.py install
I get the following error:
error: could not create ‘build’: Access is denied
The same error also occurs when I try _’builddir’_
I also have administrator access on my computer so I am confused as to why I am being denied.
Any help would be greatly appreciated! matlab, python, error api MATLAB Answers — New Questions
Replacing one line (or one part of a line) in a text file
Hello. I have a config file that contains 1 specific line that I want to change just the number (in this case from 1000 to e.g. 235)
This is my code so far:
%Get current Value
FilePath=’C:Program FilesTeledyne DALSASaperaCamFilesUsermyCamera.ccf’
Filedata = readlines(FilePath)
TF = contains(Filedata,"Time Integrate Duration=")
k = find(TF,1);
expStr=Filedata(TF);
ReportMessage(app,expStr); %My report function that reports to a UITextarea
oldLine=Filedata(k)
Filedata(k) ="Time Integrate Duration=235" %this is the new line I want
[fid, msg] = fopen(‘FilePath’, ‘w’)
if fid < 1;
error(‘could not write output file because "%s"’, msg);
end
fwrite(fid, strjoin(Filedata, ‘n’));
fclose(fid);
But it doesn’t seem to be changing the file
I also enclose the config file (text)Hello. I have a config file that contains 1 specific line that I want to change just the number (in this case from 1000 to e.g. 235)
This is my code so far:
%Get current Value
FilePath=’C:Program FilesTeledyne DALSASaperaCamFilesUsermyCamera.ccf’
Filedata = readlines(FilePath)
TF = contains(Filedata,"Time Integrate Duration=")
k = find(TF,1);
expStr=Filedata(TF);
ReportMessage(app,expStr); %My report function that reports to a UITextarea
oldLine=Filedata(k)
Filedata(k) ="Time Integrate Duration=235" %this is the new line I want
[fid, msg] = fopen(‘FilePath’, ‘w’)
if fid < 1;
error(‘could not write output file because "%s"’, msg);
end
fwrite(fid, strjoin(Filedata, ‘n’));
fclose(fid);
But it doesn’t seem to be changing the file
I also enclose the config file (text) Hello. I have a config file that contains 1 specific line that I want to change just the number (in this case from 1000 to e.g. 235)
This is my code so far:
%Get current Value
FilePath=’C:Program FilesTeledyne DALSASaperaCamFilesUsermyCamera.ccf’
Filedata = readlines(FilePath)
TF = contains(Filedata,"Time Integrate Duration=")
k = find(TF,1);
expStr=Filedata(TF);
ReportMessage(app,expStr); %My report function that reports to a UITextarea
oldLine=Filedata(k)
Filedata(k) ="Time Integrate Duration=235" %this is the new line I want
[fid, msg] = fopen(‘FilePath’, ‘w’)
if fid < 1;
error(‘could not write output file because "%s"’, msg);
end
fwrite(fid, strjoin(Filedata, ‘n’));
fclose(fid);
But it doesn’t seem to be changing the file
I also enclose the config file (text) readlines, contains, fwrite MATLAB Answers — New Questions
Why does MATLAB Runtime cache (CTF extraction path) get corrupted after running the executable for several number of times?
We have a .NET application where functions of a MATLAB Compiler SDK generated DLL are called.
It happens that the MATLAB Runtime cache gets corrupt, such that executing the DLL function always results in error.
This happens only after running the application for several number of times. When I manually delete the entire MATLAB Runtime cache directory helps resolving the issue. I am wondering what could be the reason for corrupted CTF extraction.We have a .NET application where functions of a MATLAB Compiler SDK generated DLL are called.
It happens that the MATLAB Runtime cache gets corrupt, such that executing the DLL function always results in error.
This happens only after running the application for several number of times. When I manually delete the entire MATLAB Runtime cache directory helps resolving the issue. I am wondering what could be the reason for corrupted CTF extraction. We have a .NET application where functions of a MATLAB Compiler SDK generated DLL are called.
It happens that the MATLAB Runtime cache gets corrupt, such that executing the DLL function always results in error.
This happens only after running the application for several number of times. When I manually delete the entire MATLAB Runtime cache directory helps resolving the issue. I am wondering what could be the reason for corrupted CTF extraction. corrupted, mcr MATLAB Answers — New Questions
3D system definition: How btaining the angle between a single axis and a plane
Hello, I am having trouble obtaining the angle between a vector and a plane which are defined by two different rotation matrix.
I have two objects, A and B, which are defined by rotation matrices R (Rotation matrix from global origin to A) and R’ (Rotation matrix from global origin to B).
R = [a b c; d e f; g h i]
R’= [a’ b’ c’; d’ e’ f’; g’ h’ i’]
I want to obtain the rotation in degrees between the axis X from object A to the plane XZ (and eventually XY) from object B.
Thank you in advance.
AlonsoHello, I am having trouble obtaining the angle between a vector and a plane which are defined by two different rotation matrix.
I have two objects, A and B, which are defined by rotation matrices R (Rotation matrix from global origin to A) and R’ (Rotation matrix from global origin to B).
R = [a b c; d e f; g h i]
R’= [a’ b’ c’; d’ e’ f’; g’ h’ i’]
I want to obtain the rotation in degrees between the axis X from object A to the plane XZ (and eventually XY) from object B.
Thank you in advance.
Alonso Hello, I am having trouble obtaining the angle between a vector and a plane which are defined by two different rotation matrix.
I have two objects, A and B, which are defined by rotation matrices R (Rotation matrix from global origin to A) and R’ (Rotation matrix from global origin to B).
R = [a b c; d e f; g h i]
R’= [a’ b’ c’; d’ e’ f’; g’ h’ i’]
I want to obtain the rotation in degrees between the axis X from object A to the plane XZ (and eventually XY) from object B.
Thank you in advance.
Alonso 3d kinematics, rotation matrices MATLAB Answers — New Questions
Performance Issue using cell() to convert Python data types to Matlab
I have a Python list of 50,000 elements in Matlab, and using the cell() function to convert it to Matlab cell array is taking over an hour, while on my coworkers machine it takes less than a minute. We are both using Python 3.9, Matlab 2021b, and my VM is v4cpu 16G RAM. Also, when trying to pause or stop the execution of cell() Matlab freezes, and has to be forcefully shut down.
Note – The code below executed instantly in this website, but takes over an hour on Matlab 2021b installed on my local.
pyrun("py_list = list(range(50000))");
cellArray = cell(pyrun(‘py_list’, ‘py_list’));I have a Python list of 50,000 elements in Matlab, and using the cell() function to convert it to Matlab cell array is taking over an hour, while on my coworkers machine it takes less than a minute. We are both using Python 3.9, Matlab 2021b, and my VM is v4cpu 16G RAM. Also, when trying to pause or stop the execution of cell() Matlab freezes, and has to be forcefully shut down.
Note – The code below executed instantly in this website, but takes over an hour on Matlab 2021b installed on my local.
pyrun("py_list = list(range(50000))");
cellArray = cell(pyrun(‘py_list’, ‘py_list’)); I have a Python list of 50,000 elements in Matlab, and using the cell() function to convert it to Matlab cell array is taking over an hour, while on my coworkers machine it takes less than a minute. We are both using Python 3.9, Matlab 2021b, and my VM is v4cpu 16G RAM. Also, when trying to pause or stop the execution of cell() Matlab freezes, and has to be forcefully shut down.
Note – The code below executed instantly in this website, but takes over an hour on Matlab 2021b installed on my local.
pyrun("py_list = list(range(50000))");
cellArray = cell(pyrun(‘py_list’, ‘py_list’)); python, cell MATLAB Answers — New Questions
Line following AGV Simulation Issue
I’m planning to simulate a warehouse with line following AGVs. I would like the warehouse as the one in Mobile Robotics Simulation Toolbox. However, instead of using probabilistic methods, I want each robot to strictly follow predefined paths/lines without deviating. How can I configure these paths and ensure the robots follow them while avoiding collisions with each other? Thank you
Control and Simulate Multiple Warehouse Robots – MATLAB & Simulink (mathworks.com)I’m planning to simulate a warehouse with line following AGVs. I would like the warehouse as the one in Mobile Robotics Simulation Toolbox. However, instead of using probabilistic methods, I want each robot to strictly follow predefined paths/lines without deviating. How can I configure these paths and ensure the robots follow them while avoiding collisions with each other? Thank you
Control and Simulate Multiple Warehouse Robots – MATLAB & Simulink (mathworks.com) I’m planning to simulate a warehouse with line following AGVs. I would like the warehouse as the one in Mobile Robotics Simulation Toolbox. However, instead of using probabilistic methods, I want each robot to strictly follow predefined paths/lines without deviating. How can I configure these paths and ensure the robots follow them while avoiding collisions with each other? Thank you
Control and Simulate Multiple Warehouse Robots – MATLAB & Simulink (mathworks.com) control, line, warehouse, robots, robot, robotics, mobile robotics simulation toolbox, mobile, agv MATLAB Answers — New Questions
How to resolve the error “Could not access MATLAB Runtime component cache fl:filesystem:InvalidArgument”?
I am attempting to run a compiled application. However, I am encountering the following error:
Could not access the MATLAB Runtime component cache.
Details: fl:filesystem:InvalidArgument; component cache root:;
componentname: APP_NAME
How can I resolve this error?I am attempting to run a compiled application. However, I am encountering the following error:
Could not access the MATLAB Runtime component cache.
Details: fl:filesystem:InvalidArgument; component cache root:;
componentname: APP_NAME
How can I resolve this error? I am attempting to run a compiled application. However, I am encountering the following error:
Could not access the MATLAB Runtime component cache.
Details: fl:filesystem:InvalidArgument; component cache root:;
componentname: APP_NAME
How can I resolve this error? mcr, runtime, component, cache, deployed, app, application MATLAB Answers — New Questions
Finding intersection between line plot and horizontal line
I’ve been trying to find the full width at half max (FWHM) some data points. There are about 1000 data points (intensity on the y and angle on the x), and when I plot them, there is a line drawn to connect all the points. My current method for calculating the FWHM is to use the find function and locate the points in the original data that are closest to the half max.
Is it possible to use the line drawn to connect all the points and find the intersection between that and a horizontal line at the half max? I’ve tired using the find function like:
intersection = find(intensity == halfMax);
However this returns an empty vector (unsurprisngly). If there was a way to access the points on the line that connect my original data, this would make it a more accurate calculation.
The attached graph is semilogy, please let me know if you know it this is possible or need clarification.I’ve been trying to find the full width at half max (FWHM) some data points. There are about 1000 data points (intensity on the y and angle on the x), and when I plot them, there is a line drawn to connect all the points. My current method for calculating the FWHM is to use the find function and locate the points in the original data that are closest to the half max.
Is it possible to use the line drawn to connect all the points and find the intersection between that and a horizontal line at the half max? I’ve tired using the find function like:
intersection = find(intensity == halfMax);
However this returns an empty vector (unsurprisngly). If there was a way to access the points on the line that connect my original data, this would make it a more accurate calculation.
The attached graph is semilogy, please let me know if you know it this is possible or need clarification. I’ve been trying to find the full width at half max (FWHM) some data points. There are about 1000 data points (intensity on the y and angle on the x), and when I plot them, there is a line drawn to connect all the points. My current method for calculating the FWHM is to use the find function and locate the points in the original data that are closest to the half max.
Is it possible to use the line drawn to connect all the points and find the intersection between that and a horizontal line at the half max? I’ve tired using the find function like:
intersection = find(intensity == halfMax);
However this returns an empty vector (unsurprisngly). If there was a way to access the points on the line that connect my original data, this would make it a more accurate calculation.
The attached graph is semilogy, please let me know if you know it this is possible or need clarification. fwhm, data plot MATLAB Answers — New Questions
Error in for loop: Index exceeds matrix dimensions.
Hi everyone! I need help with my code.I have a matrix (300×300) with some equal rows, and I need to eliminate the duplicate rows. I can’t solve the error. Can anyone help me??Thank you very much!
Below I copy the part of the code with the error and a simplified example.
clear all
matrix_f=[1 2 3; 1 2 3; 4 5 6; 7 8 9; 7 8 9; 10 11 12];
for k=1:length(matrix_f(:,1))
if matrix_f(k,1)==matrix_f(k+1,1)
matrix_f(k+1,:)=[];
end
endHi everyone! I need help with my code.I have a matrix (300×300) with some equal rows, and I need to eliminate the duplicate rows. I can’t solve the error. Can anyone help me??Thank you very much!
Below I copy the part of the code with the error and a simplified example.
clear all
matrix_f=[1 2 3; 1 2 3; 4 5 6; 7 8 9; 7 8 9; 10 11 12];
for k=1:length(matrix_f(:,1))
if matrix_f(k,1)==matrix_f(k+1,1)
matrix_f(k+1,:)=[];
end
end Hi everyone! I need help with my code.I have a matrix (300×300) with some equal rows, and I need to eliminate the duplicate rows. I can’t solve the error. Can anyone help me??Thank you very much!
Below I copy the part of the code with the error and a simplified example.
clear all
matrix_f=[1 2 3; 1 2 3; 4 5 6; 7 8 9; 7 8 9; 10 11 12];
for k=1:length(matrix_f(:,1))
if matrix_f(k,1)==matrix_f(k+1,1)
matrix_f(k+1,:)=[];
end
end for, for loop, matrix, index exceeds matrix dimensions. MATLAB Answers — New Questions
finding the remainder of the division of two symbolic variables
I want to get 2*V^2 from the operation below
syms A V
rem(2*V^2+3A,A)
but it seems like rem() function does not work with symbolic variables. Is there a way to achieve this in another way?I want to get 2*V^2 from the operation below
syms A V
rem(2*V^2+3A,A)
but it seems like rem() function does not work with symbolic variables. Is there a way to achieve this in another way? I want to get 2*V^2 from the operation below
syms A V
rem(2*V^2+3A,A)
but it seems like rem() function does not work with symbolic variables. Is there a way to achieve this in another way? symbolic MATLAB Answers — New Questions
