Answered

Create a function handle that is a sum of function handles

Your specification is a bit ambiguous to me, but if I interpret it such that you want to fit a function such that: (I've used...

Create a function handle that is a sum of function handles

Your specification is a bit ambiguous to me, but if I interpret it such that you want to fit a function such that: (I've used...

2 years ago | 1

Answered

How can I find the filter bandwidth of Savitzky-Golay filtering?

QD suggestion: x = randn(4096,1); x_sgf = sgolayfilt(x,order,framelength); fx = fftshift(fft(x)); fxsgf = fftshift(fft(x_sgf...

How can I find the filter bandwidth of Savitzky-Golay filtering?

QD suggestion: x = randn(4096,1); x_sgf = sgolayfilt(x,order,framelength); fx = fftshift(fft(x)); fxsgf = fftshift(fft(x_sgf...

2 years ago | 0

Answered

Further processing of contour plot data

I would not do the average of the contours in a region, because if you have a rather flat region with a single spike in some reg...

Further processing of contour plot data

I would not do the average of the contours in a region, because if you have a rather flat region with a single spike in some reg...

2 years ago | 1

Answered

Check summation from n=0 to 5 |n><n| in MATLAB?

If |n><n| is the same as <n||n> then you should have a look at the help and documentation to dot. That function will not general...

Check summation from n=0 to 5 |n><n| in MATLAB?

If |n><n| is the same as <n||n> then you should have a look at the help and documentation to dot. That function will not general...

2 years ago | 0

| accepted

Answered

Decimal indexing for arrays in MATLAB

Have a look at the help and documentation for griddedInterpolant. That function might be what you're looking for. It creates a f...

Decimal indexing for arrays in MATLAB

Have a look at the help and documentation for griddedInterpolant. That function might be what you're looking for. It creates a f...

2 years ago | 1

| accepted

Answered

How can I plot 18 lines in different colors on a single plot?

For that type of tasks I have had good use of the cmlines-function in the colormap-and-colorbar-utilities toolbox on the file ex...

How can I plot 18 lines in different colors on a single plot?

For that type of tasks I have had good use of the cmlines-function in the colormap-and-colorbar-utilities toolbox on the file ex...

2 years ago | 0

Answered

How to adjust a curve fit such that it goes through a specific point

If this is a plot of an electron-density profile observed with an IS-radar, then your ionosonde fOF2 point is (expected to be) a...

How to adjust a curve fit such that it goes through a specific point

If this is a plot of an electron-density profile observed with an IS-radar, then your ionosonde fOF2 point is (expected to be) a...

2 years ago | 0

Answered

i have a loop which runs from 1 to 7 producing four different figures per run. How do i automatically save each of these figures inside the loop. The loop is given below.

One thing I regularly do is something like this: fig_basename = 'My_current_fig'; for i1 = 1:7 %plot-and-decorate-code f...

i have a loop which runs from 1 to 7 producing four different figures per run. How do i automatically save each of these figures inside the loop. The loop is given below.

One thing I regularly do is something like this: fig_basename = 'My_current_fig'; for i1 = 1:7 %plot-and-decorate-code f...

2 years ago | 0

| accepted

Answered

How to rearrange random binary input for each iteration?

Have a look at the nextperm tool on the file exchange. It will allow you to cycle through all permutations. HTH

How to rearrange random binary input for each iteration?

Have a look at the nextperm tool on the file exchange. It will allow you to cycle through all permutations. HTH

2 years ago | 0

Answered

Combine different size matrix

If your D is a scalar that you want to expand into a diagonal matrix then perhaps you can do something along these lines: szA =...

Combine different size matrix

If your D is a scalar that you want to expand into a diagonal matrix then perhaps you can do something along these lines: szA =...

2 years ago | 0

Answered

How to detect wide ball in cricket using MATLAB. What should be the simple code for it.

One thing you can (should) try is to look at the differences between frames, that is subtract the previous frame from the curren...

How to detect wide ball in cricket using MATLAB. What should be the simple code for it.

One thing you can (should) try is to look at the differences between frames, that is subtract the previous frame from the curren...

2 years ago | 1

Answered

How to extract data from specific row

You can do things like this in matlab: data_oi = data(data(:,1)==1|data(:,1)==2,:); This wouild give you your data of interest...

How to extract data from specific row

You can do things like this in matlab: data_oi = data(data(:,1)==1|data(:,1)==2,:); This wouild give you your data of interest...

2 years ago | 0

| accepted

Answered

issue with colormap (colorcube)

Check that/if/how the two m-files differ. If they differ, copy the one you like better to the other system into a directory you ...

issue with colormap (colorcube)

Check that/if/how the two m-files differ. If they differ, copy the one you like better to the other system into a directory you ...

2 years ago | 0

Answered

Why am I obtaining incorrect values for Lipschitz 1/2 norms using the central difference method?

You've forgot to take the derivative of the function on-line, and you seem to take some kind of derivative on your own computer....

Why am I obtaining incorrect values for Lipschitz 1/2 norms using the central difference method?

You've forgot to take the derivative of the function on-line, and you seem to take some kind of derivative on your own computer....

2 years ago | 0

Answered

How can write Dirac bra-ket notation in MATLAB? Example please.

That depends on what you want to apply the bra-ket on. If it is simple vectors you might get away with simple inner-products usi...

How can write Dirac bra-ket notation in MATLAB? Example please.

That depends on what you want to apply the bra-ket on. If it is simple vectors you might get away with simple inner-products usi...

2 years ago | 2

| accepted

Answered

strange error with varfun and anonymous function

These 2 modifications work: tbl = table(randn(5,1)); func = @(x) cumsum(x); varfun(func, tbl) % ans = % 5x1 table % F...

strange error with varfun and anonymous function

These 2 modifications work: tbl = table(randn(5,1)); func = @(x) cumsum(x); varfun(func, tbl) % ans = % 5x1 table % F...

2 years ago | 0

| accepted

Answered

How to solve system of ODEs with unknown initial value?

This works: % one second-order ODE rephrased as 2 coupled first-order syms q0 [2 1] syms a1 a2 syms q(t) [2 1]; A = [...

How to solve system of ODEs with unknown initial value?

This works: % one second-order ODE rephrased as 2 coupled first-order syms q0 [2 1] syms a1 a2 syms q(t) [2 1]; A = [...

2 years ago | 0

Answered

Get grayscale like image from 2D representation of 3D random plot

Have a look at the help and documentation of histcounts2. That function will allow you to calculate this type of cumulative coun...

Get grayscale like image from 2D representation of 3D random plot

Have a look at the help and documentation of histcounts2. That function will allow you to calculate this type of cumulative coun...

2 years ago | 1

| accepted

Answered

Standard Deviation of an histogram

You don't want the standard deviation of the histogram. You want the standard deviation of the pixel intensities in the image. Y...

Standard Deviation of an histogram

You don't want the standard deviation of the histogram. You want the standard deviation of the pixel intensities in the image. Y...

2 years ago | 0

Answered

Differential Equations with Inputs (Tank Draining Problem)

What you should do is to make a small modification of your ODE-function - such that it takes an additional input argument where ...

Differential Equations with Inputs (Tank Draining Problem)

What you should do is to make a small modification of your ODE-function - such that it takes an additional input argument where ...

2 years ago | 1

| accepted

Answered

Shift a square matrix along a bigger square matrix by one

Have a look at the help and documentation for the function circshift. That function should solve the problem you have described....

Shift a square matrix along a bigger square matrix by one

Have a look at the help and documentation for the function circshift. That function should solve the problem you have described....

2 years ago | 0

Answered

Who owns the copyright of the code?

This will surely differ from country to country. Ask your trade union. In Sweden it is (at least used to be) so that if the com...

Who owns the copyright of the code?

This will surely differ from country to country. Ask your trade union. In Sweden it is (at least used to be) so that if the com...

2 years ago | 1

| accepted

Answered

How to access the double cell 5*1 ?

You could use cell2mat to convert the 5x1 cell-array with elements n_j x 3 into a matrix with n_many x 3 and then proceed as per...

How to access the double cell 5*1 ?

You could use cell2mat to convert the 5x1 cell-array with elements n_j x 3 into a matrix with n_many x 3 and then proceed as per...

2 years ago | 0

Answered

How to find the count of vertical lines in an image using Fourier Transform in MATLAB?

Why in the world do you want to use the Fourier transform to do that? You might be OK-ish for this specific pattern since it (su...

How to find the count of vertical lines in an image using Fourier Transform in MATLAB?

Why in the world do you want to use the Fourier transform to do that? You might be OK-ish for this specific pattern since it (su...

2 years ago | 1

Answered

Solving a differential equation

According to your description you don't have a differential equation if you have the values of C and the known dependent values ...

Solving a differential equation

According to your description you don't have a differential equation if you have the values of C and the known dependent values ...

2 years ago | 0

| accepted

Answered

How to convert XYZ coordinate into nodes (like Xi, Yj) on the grid curve surface?

Are you looking for something like this: xy2sn? HTH

How to convert XYZ coordinate into nodes (like Xi, Yj) on the grid curve surface?

Are you looking for something like this: xy2sn? HTH

2 years ago | 0

Answered

Deconvolution of experimental peaks

Have a look at the help and documentation of deconvblind. If you make sure that the curve you want to deconvolve and the point-s...

Deconvolution of experimental peaks

Have a look at the help and documentation of deconvblind. If you make sure that the curve you want to deconvolve and the point-s...

2 years ago | 0

Answered

how to make curved arrow

There are a number of submissions on the File Exchange that helps you with this: circular-arrow-around-vector, circular_arrow, ...

how to make curved arrow

There are a number of submissions on the File Exchange that helps you with this: circular-arrow-around-vector, circular_arrow, ...

2 years ago | 0

Answered

How to get the numerical rank of the matrix in matlab?

If you can afford it you might consider looking at the singular vaules that you obtain from the svd of your A-matrix. That will ...

How to get the numerical rank of the matrix in matlab?

If you can afford it you might consider looking at the singular vaules that you obtain from the svd of your A-matrix. That will ...

2 years ago | 0

| accepted

Answered

Is there a way to export the results of PDE's solution to the gradient？Or the gradient can be calculated from the exported triangular node result？

You should have access to the pdegrad-function that should handle your case. Or if that doesn't suit your particular need some o...

Is there a way to export the results of PDE's solution to the gradient？Or the gradient can be calculated from the exported triangular node result？

You should have access to the pdegrad-function that should handle your case. Or if that doesn't suit your particular need some o...

2 years ago | 1

| accepted