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fft of sin(pi*x/5)./(pi*x) returns NaN

When ‘x’ is 0, ‘G’ becomes 0/0, and the IEEE standard defines that as NaN. Any NaN in a vector will propagate through all calcu...

fft of sin(pi*x/5)./(pi*x) returns NaN

When ‘x’ is 0, ‘G’ becomes 0/0, and the IEEE standard defines that as NaN. Any NaN in a vector will propagate through all calcu...

6日 前 | 1

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Certain functions not available.

The ischange function was introduced in R2017b. Your best option would likely be to upgrade to a more recent release. Workar...

Certain functions not available.

The ischange function was introduced in R2017b. Your best option would likely be to upgrade to a more recent release. Workar...

6日 前 | 0

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standard separation of x axis tick marks

Plot them using semilogx: % Output Variable Section: subplot(1,2,1) semilogx(omega,decibels),xlabel('Omega (rad/s)'),ylabel(...

standard separation of x axis tick marks

Plot them using semilogx: % Output Variable Section: subplot(1,2,1) semilogx(omega,decibels),xlabel('Omega (rad/s)'),ylabel(...

6日 前 | 0

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How to amplify the signal?

Multiply the vector or matrix by a constant greater than 1, and use the sound (not soundsc) function to listen to it.

How to amplify the signal?

Multiply the vector or matrix by a constant greater than 1, and use the sound (not soundsc) function to listen to it.

6日 前 | 0

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Editor window not opening in Matlab

There is a small white down-pointing arrow in a white circle in the upper right corner of the Editor toolstrip. Among the optio...

Editor window not opening in Matlab

There is a small white down-pointing arrow in a white circle in the upper right corner of the Editor toolstrip. Among the optio...

7日 前 | 1

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Don't understand sequences or how to process them in a function.

You are overshadowing the function flip. It’s best not to do that. Name your function something else, such as ‘myflip’ or so...

Don't understand sequences or how to process them in a function.

You are overshadowing the function flip. It’s best not to do that. Name your function something else, such as ‘myflip’ or so...

7日 前 | 0

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Plotting the orientation of lines

Try this: A = [99.1862290400000 102.281400300000 97.1587243900000 97.3460346000000 104.227574300000 8...

Plotting the orientation of lines

Try this: A = [99.1862290400000 102.281400300000 97.1587243900000 97.3460346000000 104.227574300000 8...

7日 前 | 0

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I want to save all the values of e1 and e2 and then I want to plot them

There are several ways to approach this. This causes the least disruption to the code you posted: n = 0.22; r = 0.9; av =...

I want to save all the values of e1 and e2 and then I want to plot them

There are several ways to approach this. This causes the least disruption to the code you posted: n = 0.22; r = 0.9; av =...

7日 前 | 0

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How to convert .csv file into audio file

Using numbered variables is never a good idea. Do this instead: T=readtable('2khz.csv'); A = table2array(T(:,3:8)); Then,...

How to convert .csv file into audio file

Using numbered variables is never a good idea. Do this instead: T=readtable('2khz.csv'); A = table2array(T(:,3:8)); Then,...

7日 前 | 0

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Probelm with 'writecell'

Try this: m = readcell('rawdata.csv'); writecell(m(2:end,:), 'modified_data.csv'); If that does not work, upload (attach) ‘r...

Probelm with 'writecell'

Try this: m = readcell('rawdata.csv'); writecell(m(2:end,:), 'modified_data.csv'); If that does not work, upload (attach) ‘r...

8日 前 | 0

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Plotting a bivariate function and a tangent line on the same graph

To plot them simultaneously, you need to use the hold function. See if this does what you want: f = @(x,y) x.^2 + 3*(x.^2)....

Plotting a bivariate function and a tangent line on the same graph

To plot them simultaneously, you need to use the hold function. See if this does what you want: f = @(x,y) x.^2 + 3*(x.^2)....

8日 前 | 0

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Apply Chebyshev filter to sea surface temperature (SST) data

‘I do not understand what should be the inputs for my problem.’ There are several different filter types. The Chebyshev desi...

Apply Chebyshev filter to sea surface temperature (SST) data

‘I do not understand what should be the inputs for my problem.’ There are several different filter types. The Chebyshev desi...

8日 前 | 0

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Convert Differential Equations to Spate Space

In order to convert your equations to a state-space representation, you need to linearise them. This involves taking the Jacobi...

Convert Differential Equations to Spate Space

In order to convert your equations to a state-space representation, you need to linearise them. This involves taking the Jacobi...

8日 前 | 0

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Can 'cascade' be used on bandstop filters created with 'designfilt'?

If you want to design a filter with multiple stopbands, it is likely easier to do this with a FIR filter. For example: Fs =...

Can 'cascade' be used on bandstop filters created with 'designfilt'?

If you want to design a filter with multiple stopbands, it is likely easier to do this with a FIR filter. For example: Fs =...

8日 前 | 0

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Graphisdag was not found

First, run these: restoredefaultpath rehash toolboxcache then see if that corrects the problem. If the problem persists ...

Graphisdag was not found

First, run these: restoredefaultpath rehash toolboxcache then see if that corrects the problem. If the problem persists ...

8日 前 | 0

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How can i make envelope cover first half peak at origin?

The envelope function apparently does not recognise the centre peak as a peak, since it is at one end of the sequence. You ca...

How can i make envelope cover first half peak at origin?

The envelope function apparently does not recognise the centre peak as a peak, since it is at one end of the sequence. You ca...

8日 前 | 1

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I am having this error. Could you help?

It is likely better to use the fullfile function than to cd to the path. I would define ‘keyfile’ as: keyfile = fullfile(pa...

I am having this error. Could you help?

It is likely better to use the fullfile function than to cd to the path. I would define ‘keyfile’ as: keyfile = fullfile(pa...

8日 前 | 0

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how to calculate the area under a curve?

‘I would also like to calculate portions of that area.’ Use cumtrapz, and then subtract the values of the limits: x=[0:100]...

how to calculate the area under a curve?

‘I would also like to calculate portions of that area.’ Use cumtrapz, and then subtract the values of the limits: x=[0:100]...

8日 前 | 1

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How does one plot only the maximum y value for an x value with multiple y values?

The accumarray function is perfect for this: D = load('y4-T4.mat'); T4 = D.T4; ...

How does one plot only the maximum y value for an x value with multiple y values?

The accumarray function is perfect for this: D = load('y4-T4.mat'); T4 = D.T4; ...

8日 前 | 0

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Excel Columns to Matlab Array

I would use the readtable function if your have R2013b or later. You can probably then convert it into a timetable array (R20...

Excel Columns to Matlab Array

I would use the readtable function if your have R2013b or later. You can probably then convert it into a timetable array (R20...

9日 前 | 0

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How to reconstruct a tidal elevation time series from tidal constituents?

I am not certain what you want. Try this: t = linspace(1, 24, 96); % Time Vector Amp = rand...

How to reconstruct a tidal elevation time series from tidal constituents?

I am not certain what you want. Try this: t = linspace(1, 24, 96); % Time Vector Amp = rand...

9日 前 | 0

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Need help filtering csv by values inside column

Try this: A = [2 23 2 39 2 40 5 12 5 9 9 29 9 85]; [UA1,~,Ix] = un...

Need help filtering csv by values inside column

Try this: A = [2 23 2 39 2 40 5 12 5 9 9 29 9 85]; [UA1,~,Ix] = un...

9日 前 | 2

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Graph not large enough to contain thick line

Rather than plotting a thick line, use a patch object instead for the standard deviations: x = 0:99; ...

Graph not large enough to contain thick line

Rather than plotting a thick line, use a patch object instead for the standard deviations: x = 0:99; ...

9日 前 | 0

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Fit theoretical x-y data set to experimental data set

I have no idea what your actual function is, or what you are doing. I would do something like this: function fd = myFunc(x)...

Fit theoretical x-y data set to experimental data set

I have no idea what your actual function is, or what you are doing. I would do something like this: function fd = myFunc(x)...

9日 前 | 1

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How to change colour of binary vector

We don’t have your data so can’t run your code. Try this: x = 0:19; y = sin(2*pi*x/19); a = randi(5, 20, 1); b = randi(5...

How to change colour of binary vector

We don’t have your data so can’t run your code. Try this: x = 0:19; y = sin(2*pi*x/19); a = randi(5, 20, 1); b = randi(5...

9日 前 | 0

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Unable to convert expression into double array.

One way is to integrate it numerically rather than symbolically: syms w fun1pdf(w) = exp(w)/((1+exp(w))^2); fun1mu(w) = w^3...

Unable to convert expression into double array.

One way is to integrate it numerically rather than symbolically: syms w fun1pdf(w) = exp(w)/((1+exp(w))^2); fun1mu(w) = w^3...

10日 前 | 0

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How to take all output from while loop?

I cannot run your code without your files. However see if this solves the problem with your while loop: k = 1; whi...

How to take all output from while loop?

I cannot run your code without your files. However see if this solves the problem with your while loop: k = 1; whi...

10日 前 | 0

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Datetime conversion in numeric form (matrix)

If you want to convert them into date numbers, use the datenum function: timeNr = datenum(time); If you want to convert them ...

Datetime conversion in numeric form (matrix)

If you want to convert them into date numbers, use the datenum function: timeNr = datenum(time); If you want to convert them ...

10日 前 | 0

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how to calculate the summation of a function having two variables.

The summation is across ‘f(x,y)’, not only ‘y’, so the function must work for all values of the arguments. The only way to do t...

how to calculate the summation of a function having two variables.

The summation is across ‘f(x,y)’, not only ‘y’, so the function must work for all values of the arguments. The only way to do t...

10日 前 | 0

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Plotting FFT Spectrum using Square Wave

Two problems: First: ‘fs’ is the inverse of the sampling interval, or 1E+6. Second, your code is correct although your plot...

Plotting FFT Spectrum using Square Wave

Two problems: First: ‘fs’ is the inverse of the sampling interval, or 1E+6. Second, your code is correct although your plot...

11日 前 | 0

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