Hi I have the following code to plot a 2D plane in 3D space.
the plane is describe by their dip angle and azimuth and the center point is at [x,y] = [0,0]
I intend to modify this code so that it can plot 3 planes in the same axis. However, the location for each plane will be varies depending on the x and y location.
planedip = 30;
planeazim = 120;

% Convert angles to radians
dip_angle_rad = deg2rad(planedip);
dip_azimuth_rad = deg2rad(360 – planeazim); % rotate from CCW to CW

% Define normal vector of plane
normal = [sin(dip_angle_rad)*cos(dip_azimuth_rad), sin(dip_angle_rad)*sin(dip_azimuth_rad), cos(dip_angle_rad)];

% Define two vectors in plane
v1 = [1, 0, (-normal(1)/normal(3))];
v2 = cross(normal, v1);

% Plot plane
x = linspace(-1,1,10);
y = linspace(-1,1,10);
[X,Y] = meshgrid(x,y);
Z = (-normal(1)*X – normal(2)*Y)/normal(3);
surf(X,Y,Z,’FaceColor’,[0.5,0.5,0.5],’FaceAlpha’,0.5,’EdgeColor’,’none’);

% Add annotations
hold on
quiver3(0, 0, 0, normal(1), normal(2), normal(3));
projection = [normal(1), normal(2), 0];
quiver3(0, 0, 0, projection(1), projection(2), projection(3));

% Add dashed line
plot3([normal(1), projection(1)], [normal(2), projection(2)], [normal(3), projection(3)], ‘–k’);

view(45,30);
axis equal
xlabel(‘x’);
ylabel(‘y’);
zlabel(‘z’);Hi I have the following code to plot a 2D plane in 3D space.
the plane is describe by their dip angle and azimuth and the center point is at [x,y] = [0,0]
I intend to modify this code so that it can plot 3 planes in the same axis. However, the location for each plane will be varies depending on the x and y location.
planedip = 30;
planeazim = 120;

% Convert angles to radians
dip_angle_rad = deg2rad(planedip);
dip_azimuth_rad = deg2rad(360 – planeazim); % rotate from CCW to CW

% Define normal vector of plane
normal = [sin(dip_angle_rad)*cos(dip_azimuth_rad), sin(dip_angle_rad)*sin(dip_azimuth_rad), cos(dip_angle_rad)];

% Define two vectors in plane
v1 = [1, 0, (-normal(1)/normal(3))];
v2 = cross(normal, v1);

% Plot plane
x = linspace(-1,1,10);
y = linspace(-1,1,10);
[X,Y] = meshgrid(x,y);
Z = (-normal(1)*X – normal(2)*Y)/normal(3);
surf(X,Y,Z,’FaceColor’,[0.5,0.5,0.5],’FaceAlpha’,0.5,’EdgeColor’,’none’);

% Add annotations
hold on
quiver3(0, 0, 0, normal(1), normal(2), normal(3));
projection = [normal(1), normal(2), 0];
quiver3(0, 0, 0, projection(1), projection(2), projection(3));

% Add dashed line
plot3([normal(1), projection(1)], [normal(2), projection(2)], [normal(3), projection(3)], ‘–k’);

view(45,30);
axis equal
xlabel(‘x’);
ylabel(‘y’);
zlabel(‘z’); Hi I have the following code to plot a 2D plane in 3D space.
the plane is describe by their dip angle and azimuth and the center point is at [x,y] = [0,0]
I intend to modify this code so that it can plot 3 planes in the same axis. However, the location for each plane will be varies depending on the x and y location.
planedip = 30;
planeazim = 120;

% Convert angles to radians
dip_angle_rad = deg2rad(planedip);
dip_azimuth_rad = deg2rad(360 – planeazim); % rotate from CCW to CW

% Define normal vector of plane
normal = [sin(dip_angle_rad)*cos(dip_azimuth_rad), sin(dip_angle_rad)*sin(dip_azimuth_rad), cos(dip_angle_rad)];

% Define two vectors in plane
v1 = [1, 0, (-normal(1)/normal(3))];
v2 = cross(normal, v1);

% Plot plane
x = linspace(-1,1,10);
y = linspace(-1,1,10);
[X,Y] = meshgrid(x,y);
Z = (-normal(1)*X – normal(2)*Y)/normal(3);
surf(X,Y,Z,’FaceColor’,[0.5,0.5,0.5],’FaceAlpha’,0.5,’EdgeColor’,’none’);

% Add annotations
hold on
quiver3(0, 0, 0, normal(1), normal(2), normal(3));
projection = [normal(1), normal(2), 0];
quiver3(0, 0, 0, projection(1), projection(2), projection(3));

% Add dashed line
plot3([normal(1), projection(1)], [normal(2), projection(2)], [normal(3), projection(3)], ‘–k’);

view(45,30);
axis equal
xlabel(‘x’);
ylabel(‘y’);
zlabel(‘z’); 2d plane MATLAB Answers — New Questions

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Hi,

I have a plane obtained via regression. Let’s say this is z = 2x + 3y + 4. I want to plot this plane AND the data points. How do I do this?Hi,

I have a plane obtained via regression. Let’s say this is z = 2x + 3y + 4. I want to plot this plane AND the data points. How do I do this? Hi,

I have a plane obtained via regression. Let’s say this is z = 2x + 3y + 4. I want to plot this plane AND the data points. How do I do this? 3 dimensions, plane, plot, plot3 MATLAB Answers — New Questions

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Hi,

Please how can I remove the bottom line of X-axis of a plot and leave the top x-axis line

ThanksHi,

Please how can I remove the bottom line of X-axis of a plot and leave the top x-axis line

Thanks Hi,

Please how can I remove the bottom line of X-axis of a plot and leave the top x-axis line

Thanks ploting MATLAB Answers — New Questions

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Hi,

Is there a way to make the label of a numeric box in a GUI generated by appdesigner to use latex as an interpreter?
Currently, if I want to say label the numeric text box it displays e.g. y_2(0). How can I make it display $y_2(0)$ i.e. in latex mode, please?

Thank you!Hi,

Is there a way to make the label of a numeric box in a GUI generated by appdesigner to use latex as an interpreter?
Currently, if I want to say label the numeric text box it displays e.g. y_2(0). How can I make it display $y_2(0)$ i.e. in latex mode, please?

Thank you! Hi,

Is there a way to make the label of a numeric box in a GUI generated by appdesigner to use latex as an interpreter?
Currently, if I want to say label the numeric text box it displays e.g. y_2(0). How can I make it display $y_2(0)$ i.e. in latex mode, please?

Thank you! appdesigner, gui, latex MATLAB Answers — New Questions

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Could anyone please explain me this : I’m using poly2mask function to creat a mask of a polygon with an image the documentation of this image says "the function sets pixels that are inside the polygon to 1 and sets pixels outside the polygon to 0" if you could see here : https://ww2.mathworks.cn/help/images/ref/poly2mask.html#f6-465457 but here when I use it to create a mask of a polygon with my image
rx = [shape(i).X];
ry = [shape(i).Y];
cond1 = isnan(rx) | isnan(ry);
rx(cond1)=[];
ry(cond1)=[];

[X,Y] = meshgrid(x,y);
row=size(X,1);
col=size(X,2);

mask=poly2mask(rx,ry,row,col);
I did this to to test how many ones that I have sum(mask(:)) and the result is very small =9 which means that only 9 points inside the polygon which is impossible because row=1069 col=1363 X is 1069×1363 Y is 1069×1363 rx is 1×42708 ry is 1x42708Could anyone please explain me this : I’m using poly2mask function to creat a mask of a polygon with an image the documentation of this image says "the function sets pixels that are inside the polygon to 1 and sets pixels outside the polygon to 0" if you could see here : https://ww2.mathworks.cn/help/images/ref/poly2mask.html#f6-465457 but here when I use it to create a mask of a polygon with my image
rx = [shape(i).X];
ry = [shape(i).Y];
cond1 = isnan(rx) | isnan(ry);
rx(cond1)=[];
ry(cond1)=[];

[X,Y] = meshgrid(x,y);
row=size(X,1);
col=size(X,2);

mask=poly2mask(rx,ry,row,col);
I did this to to test how many ones that I have sum(mask(:)) and the result is very small =9 which means that only 9 points inside the polygon which is impossible because row=1069 col=1363 X is 1069×1363 Y is 1069×1363 rx is 1×42708 ry is 1×42708 Could anyone please explain me this : I’m using poly2mask function to creat a mask of a polygon with an image the documentation of this image says "the function sets pixels that are inside the polygon to 1 and sets pixels outside the polygon to 0" if you could see here : https://ww2.mathworks.cn/help/images/ref/poly2mask.html#f6-465457 but here when I use it to create a mask of a polygon with my image
rx = [shape(i).X];
ry = [shape(i).Y];
cond1 = isnan(rx) | isnan(ry);
rx(cond1)=[];
ry(cond1)=[];

[X,Y] = meshgrid(x,y);
row=size(X,1);
col=size(X,2);

mask=poly2mask(rx,ry,row,col);
I did this to to test how many ones that I have sum(mask(:)) and the result is very small =9 which means that only 9 points inside the polygon which is impossible because row=1069 col=1363 X is 1069×1363 Y is 1069×1363 rx is 1×42708 ry is 1×42708 mask, polygon, poly2mask MATLAB Answers — New Questions

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I am working on gathering some Nyquist diagrams experimentally and facing some difficulties on simulating equivalent circuits for my data. What I have done so far is simply trying to come up with an idea of an equivalent circuit and seen if it fits the case. Well this is obscure and it is not always representative of what has been going on. So is it possible to use Matlab to construct/simulate equivalent circuits from experimental data?I am working on gathering some Nyquist diagrams experimentally and facing some difficulties on simulating equivalent circuits for my data. What I have done so far is simply trying to come up with an idea of an equivalent circuit and seen if it fits the case. Well this is obscure and it is not always representative of what has been going on. So is it possible to use Matlab to construct/simulate equivalent circuits from experimental data? I am working on gathering some Nyquist diagrams experimentally and facing some difficulties on simulating equivalent circuits for my data. What I have done so far is simply trying to come up with an idea of an equivalent circuit and seen if it fits the case. Well this is obscure and it is not always representative of what has been going on. So is it possible to use Matlab to construct/simulate equivalent circuits from experimental data? nyquist diagram, equivalent circuit, simulation, electrochemical circle fit, electrochemical impedance spectroscopy, eis MATLAB Answers — New Questions

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Hi,
I am using the s2rlgc function to calculate attenuation and phase constants across a frequency range from a .s2p file I measured on a 50-ft coaxial cable from 2 to 30 MHz with a calibrated Network Analyzers . When I then apply the calculated attenuation and phase constants to determine s-parameters of a cable of a longer length, such as 142-ft, in the plots below I get a sign inversion on the s21 imaginary component around 9 and 28 MHz, as well as, a slope inversion on the s21 real component at the same frequencies. Which then cause a jump on the smith chart below.
Is this a known issue for s2rlgc? Or, does anyone have an explanation as to why this is occuring? Or, a way to fix it? Is the length of cable measured the issue? Should a shorter cable be measured?
Thanks for any help!Hi,
I am using the s2rlgc function to calculate attenuation and phase constants across a frequency range from a .s2p file I measured on a 50-ft coaxial cable from 2 to 30 MHz with a calibrated Network Analyzers . When I then apply the calculated attenuation and phase constants to determine s-parameters of a cable of a longer length, such as 142-ft, in the plots below I get a sign inversion on the s21 imaginary component around 9 and 28 MHz, as well as, a slope inversion on the s21 real component at the same frequencies. Which then cause a jump on the smith chart below.
Is this a known issue for s2rlgc? Or, does anyone have an explanation as to why this is occuring? Or, a way to fix it? Is the length of cable measured the issue? Should a shorter cable be measured?
Thanks for any help! Hi,
I am using the s2rlgc function to calculate attenuation and phase constants across a frequency range from a .s2p file I measured on a 50-ft coaxial cable from 2 to 30 MHz with a calibrated Network Analyzers . When I then apply the calculated attenuation and phase constants to determine s-parameters of a cable of a longer length, such as 142-ft, in the plots below I get a sign inversion on the s21 imaginary component around 9 and 28 MHz, as well as, a slope inversion on the s21 real component at the same frequencies. Which then cause a jump on the smith chart below.
Is this a known issue for s2rlgc? Or, does anyone have an explanation as to why this is occuring? Or, a way to fix it? Is the length of cable measured the issue? Should a shorter cable be measured?
Thanks for any help! s2rlgc, sign inversion MATLAB Answers — New Questions

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I am currently modeling a fixed-displacement hydraulic pump that pulls fluid from a reservoir (at atmospheric pressure) and fills a gas-charged accumulator from its initial nitrogen pressure of 1400 psi to a final pressure of 3200 psi.
How would I use the "Nominal Pressure Gain" field in the Fixed-Displacement Pump (IL) block? The pressure at port B is constantly increasing (from 1400 psi to 3200 psi) while the pressure at port A is constant (at atmospheric pressure). Would it be best to use a value of 2300 psi (half way between 1400 and 3200 psi)?I am currently modeling a fixed-displacement hydraulic pump that pulls fluid from a reservoir (at atmospheric pressure) and fills a gas-charged accumulator from its initial nitrogen pressure of 1400 psi to a final pressure of 3200 psi.
How would I use the "Nominal Pressure Gain" field in the Fixed-Displacement Pump (IL) block? The pressure at port B is constantly increasing (from 1400 psi to 3200 psi) while the pressure at port A is constant (at atmospheric pressure). Would it be best to use a value of 2300 psi (half way between 1400 and 3200 psi)? I am currently modeling a fixed-displacement hydraulic pump that pulls fluid from a reservoir (at atmospheric pressure) and fills a gas-charged accumulator from its initial nitrogen pressure of 1400 psi to a final pressure of 3200 psi.
How would I use the "Nominal Pressure Gain" field in the Fixed-Displacement Pump (IL) block? The pressure at port B is constantly increasing (from 1400 psi to 3200 psi) while the pressure at port A is constant (at atmospheric pressure). Would it be best to use a value of 2300 psi (half way between 1400 and 3200 psi)? hydraulic pump, accumulator MATLAB Answers — New Questions

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Let’s say I want to calculate things for alpha ranging from 0 to 2pi.
I’ve written if / else-if statements to do this:
alpha = linspace(0, 2pi, 100)
if 0 <= alpha & alpha <= pi/2
calculate this;
elseif pi/2 < alpha & alpha < pi
calculate this;
end
Now, after I’ve finished debugging this code, I noticed I can only run the code for one, specific interval of alpha at a time.
So, I have to use
alpha = linspace(0, pi/2, 15),
then run code, plot data, press hold on, and then switch to
alpha = linspace(pi/2 + 1e-10, pi, 15),
then run code, plot data, press hold on, and then switch alpha intervals yet again.
This will be quite error prone, as my modeling work builds up in complexity.
So, how can I run code just once, to get all calculations, for all alpha?
If I try to run code just once, for all alpha, the code doesn’t run.
I have to go one interval of alpha at a time, for the code to run.
Thanks in advance!Let’s say I want to calculate things for alpha ranging from 0 to 2pi.
I’ve written if / else-if statements to do this:
alpha = linspace(0, 2pi, 100)
if 0 <= alpha & alpha <= pi/2
calculate this;
elseif pi/2 < alpha & alpha < pi
calculate this;
end
Now, after I’ve finished debugging this code, I noticed I can only run the code for one, specific interval of alpha at a time.
So, I have to use
alpha = linspace(0, pi/2, 15),
then run code, plot data, press hold on, and then switch to
alpha = linspace(pi/2 + 1e-10, pi, 15),
then run code, plot data, press hold on, and then switch alpha intervals yet again.
This will be quite error prone, as my modeling work builds up in complexity.
So, how can I run code just once, to get all calculations, for all alpha?
If I try to run code just once, for all alpha, the code doesn’t run.
I have to go one interval of alpha at a time, for the code to run.
Thanks in advance! Let’s say I want to calculate things for alpha ranging from 0 to 2pi.
I’ve written if / else-if statements to do this:
alpha = linspace(0, 2pi, 100)
if 0 <= alpha & alpha <= pi/2
calculate this;
elseif pi/2 < alpha & alpha < pi
calculate this;
end
Now, after I’ve finished debugging this code, I noticed I can only run the code for one, specific interval of alpha at a time.
So, I have to use
alpha = linspace(0, pi/2, 15),
then run code, plot data, press hold on, and then switch to
alpha = linspace(pi/2 + 1e-10, pi, 15),
then run code, plot data, press hold on, and then switch alpha intervals yet again.
This will be quite error prone, as my modeling work builds up in complexity.
So, how can I run code just once, to get all calculations, for all alpha?
If I try to run code just once, for all alpha, the code doesn’t run.
I have to go one interval of alpha at a time, for the code to run.
Thanks in advance! if statement, for loop MATLAB Answers — New Questions

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Hello,
I want to plot a trapezoidal wave train knowing only the plateau times, meaning the duration of the "flat part" of the trapezoidal wave, and the total duration of the impulse train, depending on another data vector I have. I do not have the equation of the ascending or descending parts, even though I can calculate them. But I need an easy way to plot this in matlab.
The plateaus need to be 60 seconds long and total number of points needs to be equal to the length of a data vector A.
So far I only found the trapezoidal equation with some parameters:
a = 0.5 %Amplitude
m = 9.55 % Time Period
l = 3*pi/2 % phase
c = a/2 % offset
x = 0:.1:100 %Sample Points
Trapezoidal_Wave = a/pi*(asin(sin((pi/m)*x+l))+acos(cos((pi/m)*x+l)))-a/2+c;
plot(x, Trapezoidal_Wave)
However I cannot control the plateau duration (or I don’t understand how). Any help and any better way to do this would be greatly appreciated. Thank you!Hello,
I want to plot a trapezoidal wave train knowing only the plateau times, meaning the duration of the "flat part" of the trapezoidal wave, and the total duration of the impulse train, depending on another data vector I have. I do not have the equation of the ascending or descending parts, even though I can calculate them. But I need an easy way to plot this in matlab.
The plateaus need to be 60 seconds long and total number of points needs to be equal to the length of a data vector A.
So far I only found the trapezoidal equation with some parameters:
a = 0.5 %Amplitude
m = 9.55 % Time Period
l = 3*pi/2 % phase
c = a/2 % offset
x = 0:.1:100 %Sample Points
Trapezoidal_Wave = a/pi*(asin(sin((pi/m)*x+l))+acos(cos((pi/m)*x+l)))-a/2+c;
plot(x, Trapezoidal_Wave)
However I cannot control the plateau duration (or I don’t understand how). Any help and any better way to do this would be greatly appreciated. Thank you! Hello,
I want to plot a trapezoidal wave train knowing only the plateau times, meaning the duration of the "flat part" of the trapezoidal wave, and the total duration of the impulse train, depending on another data vector I have. I do not have the equation of the ascending or descending parts, even though I can calculate them. But I need an easy way to plot this in matlab.
The plateaus need to be 60 seconds long and total number of points needs to be equal to the length of a data vector A.
So far I only found the trapezoidal equation with some parameters:
a = 0.5 %Amplitude
m = 9.55 % Time Period
l = 3*pi/2 % phase
c = a/2 % offset
x = 0:.1:100 %Sample Points
Trapezoidal_Wave = a/pi*(asin(sin((pi/m)*x+l))+acos(cos((pi/m)*x+l)))-a/2+c;
plot(x, Trapezoidal_Wave)
However I cannot control the plateau duration (or I don’t understand how). Any help and any better way to do this would be greatly appreciated. Thank you! plotting, impulse, trapezoidal MATLAB Answers — New Questions

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