Answered

how to store data for second looping

One way would be to use a 3D array for dataA variable or; for z=1:1000 for i=1:20 x(i)=rand; y(i)=2*x(i)...

how to store data for second looping

One way would be to use a 3D array for dataA variable or; for z=1:1000 for i=1:20 x(i)=rand; y(i)=2*x(i)...

4 months ago | 0

| accepted

Answered

How to plot every column of matrix into a different graphic but in one figure

This might be what you are looking for A = rand(13,4); % random 13x4 matrix [r,c] = size(A); % get number of rows and columns ...

How to plot every column of matrix into a different graphic but in one figure

This might be what you are looking for A = rand(13,4); % random 13x4 matrix [r,c] = size(A); % get number of rows and columns ...

4 months ago | 1

Answered

plot 2 different y-values for the same x-value in box plot

You are looking for the "bar" function. If you also need the error bars, check out this answer from a previously asked question....

plot 2 different y-values for the same x-value in box plot

You are looking for the "bar" function. If you also need the error bars, check out this answer from a previously asked question....

7 months ago | 0

Answered

plotting an array skipping some columns

If you know which columns you want; desiredColumnIndex = [1 23 35 67 70 83]; plot(x,T(:,desiredColumnIndex)) If you want ever...

plotting an array skipping some columns

If you know which columns you want; desiredColumnIndex = [1 23 35 67 70 83]; plot(x,T(:,desiredColumnIndex)) If you want ever...

7 months ago | 1

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Answered

Code for FFT analysis

You should check the FFT function site. Everything you need is there. Here is the link.

Code for FFT analysis

You should check the FFT function site. Everything you need is there. Here is the link.

7 months ago | 0

Answered

How can I index elements by their sorted positions?

Sort has a second output that is the index; [B,I] = sort(A); such that A(I) = B; From there, I is the C_ matrix you are looki...

How can I index elements by their sorted positions?

Sort has a second output that is the index; [B,I] = sort(A); such that A(I) = B; From there, I is the C_ matrix you are looki...

7 months ago | 0

| accepted

Answered

Processing EMG data in MATLAB?

I think you are looking for the function cumtrapz, here is the link.

Processing EMG data in MATLAB?

I think you are looking for the function cumtrapz, here is the link.

7 months ago | 0

| accepted

Answered

How do I get the transfer functions in a MIMO transfer matrix in Matlab

Once you obtain the system model G, you can call any input-output pairs as you like as if you are dealing with matrices. outpu...

How do I get the transfer functions in a MIMO transfer matrix in Matlab

Once you obtain the system model G, you can call any input-output pairs as you like as if you are dealing with matrices. outpu...

7 months ago | 0

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Answered

Plot all four functions

It only plots the first one because your Zeta is always 1 (c/cc = 1). Moreover, even if you changed Zeta to be other values, it ...

Plot all four functions

It only plots the first one because your Zeta is always 1 (c/cc = 1). Moreover, even if you changed Zeta to be other values, it ...

7 months ago | 1

| accepted

Answered

Plotting a 2 dimensional graph

What you are looking for is the "countour" function (or countourf) of Matlab. Check this link and you can adapty your equation t...

Plotting a 2 dimensional graph

What you are looking for is the "countour" function (or countourf) of Matlab. Check this link and you can adapty your equation t...

7 months ago | 0

Answered

Frequency based weighting in Simulink

One approach can be to fit a model to that table. For example; f = [0.1 0.125 0.16 0.2 0.25 0.315 0.4 0.5]; m = [62.4 97.2 1...

Frequency based weighting in Simulink

One approach can be to fit a model to that table. For example; f = [0.1 0.125 0.16 0.2 0.25 0.315 0.4 0.5]; m = [62.4 97.2 1...

8 months ago | 0

| accepted

Answered

how to calculate the value of theta_k in terms of theta_i and theta_j

If you have symbolic toolbox, you can use something like this; syms a b c real % define a b c as real symbolic variables eq = ...

how to calculate the value of theta_k in terms of theta_i and theta_j

If you have symbolic toolbox, you can use something like this; syms a b c real % define a b c as real symbolic variables eq = ...

9 months ago | 0

Answered

Open Loop Time Response ?

Define your transfer function first. Then define your time vector. I have no idea what you want for input but I will use a nice ...

Open Loop Time Response ?

Define your transfer function first. Then define your time vector. I have no idea what you want for input but I will use a nice ...

9 months ago | 0

Answered

How can I put a display that shows changing variables in a plot?

Assuming you plot in a for loop and the changing variable is x, below code will update the title of the plot to be equal to x f...

How can I put a display that shows changing variables in a plot?

Assuming you plot in a for loop and the changing variable is x, below code will update the title of the plot to be equal to x f...

10 months ago | 0

Answered

How can i verify time step of excel files?

After you load the file in to matlab workspace, name the variable for time. Then you can use diff() function to find the differe...

How can i verify time step of excel files?

After you load the file in to matlab workspace, name the variable for time. Then you can use diff() function to find the differe...

10 months ago | 0

| accepted

Answered

Plot a discrete signal

Here is one way; n = -5:0.1:5; index = [find(n==-3) find(n==-1) find(n==1) find(n==3)]; x = zeros(length(n),1); x(index) = 1...

Plot a discrete signal

Here is one way; n = -5:0.1:5; index = [find(n==-3) find(n==-1) find(n==1) find(n==3)]; x = zeros(length(n),1); x(index) = 1...

1 year ago | 0

Answered

How to set different intervals using linspace()?

If you want to remove a certain element; x = linspace(1,100,1e3); % 1000 elements i = 100; % index to be remov...

How to set different intervals using linspace()?

If you want to remove a certain element; x = linspace(1,100,1e3); % 1000 elements i = 100; % index to be remov...

1 year ago | 0

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Answered

error in subcript must real integers or logicals

If you run this portion ((idemod-1)*length(tmod)+1:idemod*length(tmod)).*cos(2*pi*fc*tmod) which you use as index, you will se...

error in subcript must real integers or logicals

If you run this portion ((idemod-1)*length(tmod)+1:idemod*length(tmod)).*cos(2*pi*fc*tmod) which you use as index, you will se...

1 year ago | 0

| accepted

Answered

How to exchange between X and Y axes in a 3D graph?

You can use a code like; h = findobj(gca,'Type','line') x=get(h,'Xdata') y=get(h,'Ydata') z=get(h,'Zdata') This will extrac...

How to exchange between X and Y axes in a 3D graph?

You can use a code like; h = findobj(gca,'Type','line') x=get(h,'Xdata') y=get(h,'Ydata') z=get(h,'Zdata') This will extrac...

1 year ago | 0

Answered

How to Design a Full Order Observer in MATLAB?

place() function is for controller design not related to observers. The function finds a state feedback control law, u = Kx, suc...

How to Design a Full Order Observer in MATLAB?

place() function is for controller design not related to observers. The function finds a state feedback control law, u = Kx, suc...

1 year ago | 0

Answered

any input function to transfer functionm

I think the function you are looking for is lsim(). The usage is pretty simple. t = 0:1e-3:10; % time vector u = rand...

any input function to transfer functionm

I think the function you are looking for is lsim(). The usage is pretty simple. t = 0:1e-3:10; % time vector u = rand...

1 year ago | 0

Answered

State Space block state vector value

To do that you need to specify your states as outputs by modifying your C matrix. C = [1 2 3 4]; % original C matrix that giv...

State Space block state vector value

To do that you need to specify your states as outputs by modifying your C matrix. C = [1 2 3 4]; % original C matrix that giv...

1 year ago | 0

Answered

how to design a notch filter in matlab

Here is one way; alpha= 2000; % determines the depth f = 650*2*pi;% notch filter frequecy (rad/s) x = 0.1; % no...

how to design a notch filter in matlab

Here is one way; alpha= 2000; % determines the depth f = 650*2*pi;% notch filter frequecy (rad/s) x = 0.1; % no...

1 year ago | 0

Answered

modify axis in time series

You are not clear on what you want to do but from what I understand, you want to change the x labels from 0-2-4-6.. to something...

modify axis in time series

You are not clear on what you want to do but from what I understand, you want to change the x labels from 0-2-4-6.. to something...

1 year ago | 0

Answered

FOR loop calculating next values using the previous values

Your for loop cannot go upto size(Xin,1). Imagine Xin has 10 elements. For calculation of M10, you would need to access Xin(11),...

FOR loop calculating next values using the previous values

Your for loop cannot go upto size(Xin,1). Imagine Xin has 10 elements. For calculation of M10, you would need to access Xin(11),...

1 year ago | 0

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Answered

Plotting contours of Z on an x-y axis where Z is not a function of x or y

You do not have a lot of data so the countour map will not look great. However what you need to do is; % create data x = [0.2 ...

Plotting contours of Z on an x-y axis where Z is not a function of x or y

You do not have a lot of data so the countour map will not look great. However what you need to do is; % create data x = [0.2 ...

1 year ago | 1

| accepted

Answered

How can i get fourier transform of this function

Here is a one way of doing it; clear;clc A = 2; f = @(t,t1,t2) A.*((t1<t) & (t<t2)); Fs = 1000; t = 0:(1/Fs):...

How can i get fourier transform of this function

Here is a one way of doing it; clear;clc A = 2; f = @(t,t1,t2) A.*((t1<t) & (t<t2)); Fs = 1000; t = 0:(1/Fs):...

1 year ago | 0

Answered

about why in pole placement gives me error?

It is just the error says. Place command cannot place poles with multiplicity greater than rank(B). In your case, rank(B) is 1. ...

about why in pole placement gives me error?

It is just the error says. Place command cannot place poles with multiplicity greater than rank(B). In your case, rank(B) is 1. ...

1 year ago | 0

| accepted

Answered

tfestimate gives different results for different Fs

It is because when you change the sampling time, you are basically playing with the fft of the signal. You should use Ts value o...

tfestimate gives different results for different Fs

It is because when you change the sampling time, you are basically playing with the fft of the signal. You should use Ts value o...

1 year ago | 0