Answered

Finding a a path between two points on a 3d surface that proceeds through lowest value points.

I am not certain what you wantt, and I doubt there is a way to impoose the energy constraints on the path. (The shortestpath fu...

Finding a a path between two points on a 3d surface that proceeds through lowest value points.

I am not certain what you wantt, and I doubt there is a way to impoose the energy constraints on the path. (The shortestpath fu...

15 days ago | 0

Answered

function find() sometimes doesn't work properly

With Floating-Point Numbers you need to use a tolerance, so with find, usually one of the approaches in tthe second loop will wo...

function find() sometimes doesn't work properly

With Floating-Point Numbers you need to use a tolerance, so with find, usually one of the approaches in tthe second loop will wo...

16 days ago | 1

| accepted

Answered

How do I pass a dynamic number of output variables to a function?

You can define as many outputs to a function as you want. In the call to the function, you can selectt specific outputs using ...

How do I pass a dynamic number of output variables to a function?

You can define as many outputs to a function as you want. In the call to the function, you can selectt specific outputs using ...

16 days ago | 0

Answered

how can solve this problem : Conversion to cell from double is not possible.

Perhaps — X = fillmissing(X(:), 'nearest'); .

how can solve this problem : Conversion to cell from double is not possible.

Perhaps — X = fillmissing(X(:), 'nearest'); .

17 days ago | 0

Answered

How can I plot a matrix using pcolor and colorscale as log?

According to the ColorScale documentation, that property should set the colorbar scale as well. I would not use pcolor. The...

How can I plot a matrix using pcolor and colorscale as log?

According to the ColorScale documentation, that property should set the colorbar scale as well. I would not use pcolor. The...

18 days ago | 0

Answered

Interpolate y and y using a 3D vector with similar length

To do the relatively simple first interpolation, use the interp2 function. Tto draw the surface plot, the best option is the ...

Interpolate y and y using a 3D vector with similar length

To do the relatively simple first interpolation, use the interp2 function. Tto draw the surface plot, the best option is the ...

19 days ago | 0

| accepted

Answered

Genetic Algorithm with a graph

I am not certaiin what you want, however creating an options structure using optimoptions and including the name-value pair 'Plo...

Genetic Algorithm with a graph

I am not certaiin what you want, however creating an options structure using optimoptions and including the name-value pair 'Plo...

19 days ago | 0

Answered

I enabled fft function in oscillioscope and it saved the data as FFT amplitude (dBV) and frequency domain how ever I want my time domain and ampltude signals original data.

You cannot reliably invert a Fourier transforom unless you also have the phase information. Lacking the phase information, you ...

I enabled fft function in oscillioscope and it saved the data as FFT amplitude (dBV) and frequency domain how ever I want my time domain and ampltude signals original data.

You cannot reliably invert a Fourier transforom unless you also have the phase information. Lacking the phase information, you ...

20 days ago | 2

| accepted

Answered

I want to plot RMSE from mat file but it gives error

One option is to use the cellfun function (keeping ‘two’ as a cell array). The other option is to use the cell2mat function to ...

I want to plot RMSE from mat file but it gives error

One option is to use the cellfun function (keeping ‘two’ as a cell array). The other option is to use the cell2mat function to ...

21 days ago | 0

| accepted

Answered

Rotating a line plot to obtain a 360-degree color map

Itt would help to have the data. It also appears that the line is not the same everywhere (it may be part of a matrix), altho...

Rotating a line plot to obtain a 360-degree color map

Itt would help to have the data. It also appears that the line is not the same everywhere (it may be part of a matrix), altho...

22 days ago | 0

Answered

How to manually edit located peaks using findpeaks function?

I (almost) always use the 'MinPeakProminence' name-value pair for this sort of problem. Only in the case of significant hyperka...

How to manually edit located peaks using findpeaks function?

I (almost) always use the 'MinPeakProminence' name-value pair for this sort of problem. Only in the case of significant hyperka...

22 days ago | 0

Answered

Match columns and fill datasets

Using the accumarray function tthis can be done in one line — File_1 = [1 1 1 1 1 ...

Match columns and fill datasets

Using the accumarray function tthis can be done in one line — File_1 = [1 1 1 1 1 ...

22 days ago | 0

| accepted

Answered

Difference in computational time

It appears to work correctly. What else needs to be done? (W.R.T. ‘Miscellaneous’, you can use the daspect funciton or diffe...

Difference in computational time

It appears to work correctly. What else needs to be done? (W.R.T. ‘Miscellaneous’, you can use the daspect funciton or diffe...

25 days ago | 0

| accepted

Answered

How to use contourf to plot a mesh not generated in matlab, i.e. imported mesh coordinates from abaqus. The issue is that coordinates are not sequential.

It would help tto have your data. Since there are (x,y,z) coordinates (there can be duplicates), I would use the scatteredInt...

How to use contourf to plot a mesh not generated in matlab, i.e. imported mesh coordinates from abaqus. The issue is that coordinates are not sequential.

It would help tto have your data. Since there are (x,y,z) coordinates (there can be duplicates), I would use the scatteredInt...

27 days ago | 1

Answered

Coloring area between two graphs in specific interval

It would help to have the code, or at least a file thtat I can get the information from. Lacking that, a bit of creativity ...

Coloring area between two graphs in specific interval

It would help to have the code, or at least a file thtat I can get the information from. Lacking that, a bit of creativity ...

28 days ago | 0

| accepted

Answered

Problem with legend: colors don't match value of variable

I can’t run this since ‘fn’ is missing. n = 101; x = linspace(-100, 100, n); y = linspace(-100, 100, n); [X, Y] = meshgrid(...

Problem with legend: colors don't match value of variable

I can’t run this since ‘fn’ is missing. n = 101; x = linspace(-100, 100, n); y = linspace(-100, 100, n); [X, Y] = meshgrid(...

28 days ago | 0

| accepted

Answered

Hello, I would like to know how to draw a shaded region like this?

Perhaps something like this — x = linspace(0, 5, 25).'; y = 5*exp(-0.5*x) + randn(size(x)); fcn = @(b,x) b(1).*exp(b(2).*x...

Hello, I would like to know how to draw a shaded region like this?

Perhaps something like this — x = linspace(0, 5, 25).'; y = 5*exp(-0.5*x) + randn(size(x)); fcn = @(b,x) b(1).*exp(b(2).*x...

29 days ago | 0

| accepted

Answered

I want to access multiple parameters that I have defined in a function

Since the ODE integration funcitons only use the first output of the ODE functiton, one option is to add them as outputs, then w...

I want to access multiple parameters that I have defined in a function

Since the ODE integration funcitons only use the first output of the ODE functiton, one option is to add them as outputs, then w...

29 days ago | 0

| accepted

Answered

Locate peaks of an fft without using 'findpeaks'

In R2023a you should have the islocalmax function, that does essentially the same as findpeaks, although with slightly different...

Locate peaks of an fft without using 'findpeaks'

In R2023a you should have the islocalmax function, that does essentially the same as findpeaks, although with slightly different...

29 days ago | 0

Answered

Why such a fuss with ndgrid and meshgrid issues?

I’m not certain what the problem is. I generally prefer scatteredInterpolant to griddata. The choce of meshgrid or ndgrid ...

Why such a fuss with ndgrid and meshgrid issues?

I’m not certain what the problem is. I generally prefer scatteredInterpolant to griddata. The choce of meshgrid or ndgrid ...

29 days ago | 1

Answered

lsqcurvefit not working properly

It is difficult for me to understand what you are doing in this version of your code. You have a curve that is in part an exp...

lsqcurvefit not working properly

It is difficult for me to understand what you are doing in this version of your code. You have a curve that is in part an exp...

30 days ago | 1

| accepted

Answered

Overwriting the maximum function evaluation

The options structure to lsqcurvefit must be the argument to it, since (except for name-value pair arguments), arguments to MAT...

Overwriting the maximum function evaluation

The options structure to lsqcurvefit must be the argument to it, since (except for name-value pair arguments), arguments to MAT...

30 days ago | 0

| accepted

Answered

How to use fft to analyse the refelction specturm?

It would help to have ‘xx.xlsx’, however lacking it, I will synthesize something like it — Fs = 0.1; L = 1000; t = linspace(...

How to use fft to analyse the refelction specturm?

It would help to have ‘xx.xlsx’, however lacking it, I will synthesize something like it — Fs = 0.1; L = 1000; t = linspace(...

1 month ago | 1

| accepted

Answered

fdesign.lowpass; error messages of one of examples

@Jongsoo Kim — Your posted code works in R2024a, as demonsttrated here. You did not post the version you are using, and there c...

fdesign.lowpass; error messages of one of examples

@Jongsoo Kim — Your posted code works in R2024a, as demonsttrated here. You did not post the version you are using, and there c...

1 month ago | 0

Answered

Dividing daily rainfall data in to monthly data

Use a timetable and the retime function, if you have them — Rainfall = rand(ceil((1996-1961)*365.25),1)*10; ...

Dividing daily rainfall data in to monthly data

Use a timetable and the retime function, if you have them — Rainfall = rand(ceil((1996-1961)*365.25),1)*10; ...

1 month ago | 0

Answered

Where is the polyIntersect.m function in R2024 and how do I load it ?

I can’t find it in the online documentation. There are several Mapping Toolbox functions, specifically polyxpoly, as well as ot...

Where is the polyIntersect.m function in R2024 and how do I load it ?

I can’t find it in the online documentation. There are several Mapping Toolbox functions, specifically polyxpoly, as well as ot...

1 month ago | 1

| accepted

Answered

To draw campbell diagram

If you have the Signal Processing Toolbox R2015b or later, see if the rpmfreqmap function will do what you want. From its doc...

To draw campbell diagram

If you have the Signal Processing Toolbox R2015b or later, see if the rpmfreqmap function will do what you want. From its doc...

1 month ago | 0

Answered

stacked plot with 2 time series of different length and spacing

There is a way to use stackedplot with them, however it requires that they be interpolated to the same x-axis vector — files =...

stacked plot with 2 time series of different length and spacing

There is a way to use stackedplot with them, however it requires that they be interpolated to the same x-axis vector — files =...

1 month ago | 0

Answered

Curve fitting with loop

I would do something like this, puttting the entire code in a loop and saving the fitted parameters (and possibly the plots as w...

Curve fitting with loop

I would do something like this, puttting the entire code in a loop and saving the fitted parameters (and possibly the plots as w...

1 month ago | 0

| accepted

Answered

legend symbol disappears when plotting a polyshape

I don’t have any specific suggestions. It works with one output, however not more than one. That the legend function has mor...

legend symbol disappears when plotting a polyshape

I don’t have any specific suggestions. It works with one output, however not more than one. That the legend function has mor...

1 month ago | 1

| accepted