Question

Why is help() malfunctioning

Matlab seems to know that the help command is there, at least as far as which() is concerned >> which -all help C:\Program Fil...

4 jours ago | 1 answer | 0

Answered

Integrating a function including mvnpdf. Error: Input function must return 'double' or 'single' values. Found 'sym'.

Yes, that is the reason. Maybe you have made sigma or mu symbolic variables?

Integrating a function including mvnpdf. Error: Input function must return 'double' or 'single' values. Found 'sym'.

Yes, that is the reason. Maybe you have made sigma or mu symbolic variables?

17 jours ago | 0

Answered

Plotting two functions with ranges in one plot

You could also edit away the data points you don't want h=plot(x, M1, x, M2); ylim([-120,20]); h(1).XData(6:7)=[]; h(...

Plotting two functions with ranges in one plot

You could also edit away the data points you don't want h=plot(x, M1, x, M2); ylim([-120,20]); h(1).XData(6:7)=[]; h(...

environ 2 mois ago | 0

Answered

Using relative tolerance with fmincon

Can you please update the document that stated that tolerances are absolute (it was posted by MATLAB staff)? No, we cannot. On...

Using relative tolerance with fmincon

Can you please update the document that stated that tolerances are absolute (it was posted by MATLAB staff)? No, we cannot. On...

environ 2 mois ago | 0

Answered

Confusion matrix not being clearly visible for larger output classes

See the ConfusionMatrixChart Properties.

Confusion matrix not being clearly visible for larger output classes

See the ConfusionMatrixChart Properties.

environ 2 mois ago | 0

Answered

Why do I keep getting the error message array indices must be positive integers or logical values?

Why do I keep getting the error message array indices must be positive integers Because the h in X(h) is non-integer and the 0 ...

Why do I keep getting the error message array indices must be positive integers or logical values?

Why do I keep getting the error message array indices must be positive integers Because the h in X(h) is non-integer and the 0 ...

environ 2 mois ago | 0

Answered

optimization problem with two variable maxima and minima

fun=@(x) [2*x(1)^2+23.08*x(2)^2+4*(6+x(1))^2+24+14*(x(1)^2 +x(2)^2)^0.5+3*(x(1)^2+x(2)^2)-Y;... prod(x)-1]; x=fsol...

optimization problem with two variable maxima and minima

fun=@(x) [2*x(1)^2+23.08*x(2)^2+4*(6+x(1))^2+24+14*(x(1)^2 +x(2)^2)^0.5+3*(x(1)^2+x(2)^2)-Y;... prod(x)-1]; x=fsol...

2 mois ago | 0

Answered

matrix multiplication for "3-D" matrices

If you have the parallel computing toolbox, you can do this on the GPU with pagefun(@mtimes,A,B) but this may only provide gai...

matrix multiplication for "3-D" matrices

If you have the parallel computing toolbox, you can do this on the GPU with pagefun(@mtimes,A,B) but this may only provide gai...

2 mois ago | 0

Answered

how to have function with scalar value

"I have a code and 2 objective functions" If you really do want to treat this as a multi-objective problem, you should probably...

how to have function with scalar value

"I have a code and 2 objective functions" If you really do want to treat this as a multi-objective problem, you should probably...

2 mois ago | 0

Answered

Build new matrix from look up table

C=CD( interp1(B,1:numel(B),A,'nearest') );

Build new matrix from look up table

C=CD( interp1(B,1:numel(B),A,'nearest') );

2 mois ago | 1

| accepted

Answered

how to calculate area, perimeter and circularity of objects in an image using regionprops

Notice - >> a=1; %not displayed >> b=2, %displayed b = 2

how to calculate area, perimeter and circularity of objects in an image using regionprops

Notice - >> a=1; %not displayed >> b=2, %displayed b = 2

2 mois ago | 0

Answered

calculate std and mean for multiple variables automated

Observe - >> input=rand(10,5) input = 0.8147 0.1576 0.6557 0.7060 0.4387 0.9058 0.9706 0.0357...

calculate std and mean for multiple variables automated

Observe - >> input=rand(10,5) input = 0.8147 0.1576 0.6557 0.7060 0.4387 0.9058 0.9706 0.0357...

2 mois ago | 1

Answered

Accessing table variables in a class method

Here is an example to demonstrate that accessing tables by variable name works fine with value classes. Subclassing from 'handle...

Accessing table variables in a class method

Here is an example to demonstrate that accessing tables by variable name works fine with value classes. Subclassing from 'handle...

3 mois ago | 1

| accepted

Answered

How to curve fit an equation with sigma function

C = polyfit( sqrt( x.^2+y.^2) , Z, N)

How to curve fit an equation with sigma function

C = polyfit( sqrt( x.^2+y.^2) , Z, N)

4 mois ago | 1

Answered

How can i determine the area in percentage of a clustered image?

Divide the membership of each cluster by the total number of pixels.

How can i determine the area in percentage of a clustered image?

Divide the membership of each cluster by the total number of pixels.

4 mois ago | 0

Answered

Dimension of arrays being concatenated are not consistent.

Some things you urgently need to learn: https://www.mathworks.com/help/matlab/ref/dbstop.html https://www.mathworks.com/help/m...

Dimension of arrays being concatenated are not consistent.

Some things you urgently need to learn: https://www.mathworks.com/help/matlab/ref/dbstop.html https://www.mathworks.com/help/m...

4 mois ago | 1

Answered

Plotting points in style [x1,y1] , [x2,y2], [x3,y3] and them plot all of them?

No, but you can certainly write your own wrapper for any of the plotting functions to give you the input syntax that you want.

Plotting points in style [x1,y1] , [x2,y2], [x3,y3] and them plot all of them?

No, but you can certainly write your own wrapper for any of the plotting functions to give you the input syntax that you want.

4 mois ago | 0

Answered

Index exceeds array bounds

The only solution: https://www.mathworks.com/help/matlab/matlab_prog/debugging-process-and-features.html#responsive_offcanvas

Index exceeds array bounds

The only solution: https://www.mathworks.com/help/matlab/matlab_prog/debugging-process-and-features.html#responsive_offcanvas

4 mois ago | 0

| accepted

Answered

hi every one, i need to ask a question, thank you

A=double(A); A(logical(A))=B;

hi every one, i need to ask a question, thank you

A=double(A); A(logical(A))=B;

5 mois ago | 0

Question

Can symbolic vectors (not vectors of symbols) be defined and manipulated in the Symbolic Math Toolbox?

I would like to define symbolic functions that are functions of vector-valued quantities, like syms A x f(x)=x.'*A*x where A ...

5 mois ago | 1 answer | 0

Answered

Why does skeletonization sometimes reduce horizontal rectangles to single pixels?

Remember what bwskel is doing. It is peeling the outer pixels of the rectangles like an onion over and over again until it reach...

Why does skeletonization sometimes reduce horizontal rectangles to single pixels?

Remember what bwskel is doing. It is peeling the outer pixels of the rectangles like an onion over and over again until it reach...

5 mois ago | 0

Answered

Translation for an ellipsoid ?

Is there anyway to do this such that later on I need the coordinates of the rotated followed by translated ellipsoid. You can d...

Translation for an ellipsoid ?

Is there anyway to do this such that later on I need the coordinates of the rotated followed by translated ellipsoid. You can d...

5 mois ago | 0

Question

Nested Functions versus Global Variables

Why are nested functions better for sharing variables between workspaces than global variables? There doesn't seem to be much di...

5 mois ago | 1 answer | 0

Answered

scatteredInterpolant in nonlinear system

In the first global declaration, etac is missing from the list. global Hm pe1 pe2 pe3 etae2 etae3 qmax1 qmax2 qmax3 %<--- add...

scatteredInterpolant in nonlinear system

In the first global declaration, etac is missing from the list. global Hm pe1 pe2 pe3 etae2 etae3 qmax1 qmax2 qmax3 %<--- add...

5 mois ago | 0

Answered

Why does fplot think my function is not vectorized

Here's a workaround to trick fplot into doing the right thing.

Why does fplot think my function is not vectorized

Here's a workaround to trick fplot into doing the right thing.

5 mois ago | 1

Answered

Correspondence between intrinsic axes and world axes for imref objects

Or is it j,i, and k like with meshgrid? It is this one, sad to say. You can check it like this M=50; N=40; P=30; ir = imref...

Correspondence between intrinsic axes and world axes for imref objects

Or is it j,i, and k like with meshgrid? It is this one, sad to say. You can check it like this M=50; N=40; P=30; ir = imref...

5 mois ago | 0

| accepted

Answered

How to read images with positive integer? No imead()

I definitely don't get all zeros with imread. Problem solved? >> nnz(imread('C0039_100122_INDS.png')) ans = 4624 ...

How to read images with positive integer? No imead()

I definitely don't get all zeros with imread. Problem solved? >> nnz(imread('C0039_100122_INDS.png')) ans = 4624 ...

7 mois ago | 0

| accepted

Answered

FFT, IFFT and phase shifting

Is this what you want Xf=fftshift(fft(y)); f=fs.*((0:N-1) -ceil((N-1)/2))/N; subplot(2,1,2) stem(f,abs(Xf)/length(y)); ti...

FFT, IFFT and phase shifting

Is this what you want Xf=fftshift(fft(y)); f=fs.*((0:N-1) -ceil((N-1)/2))/N; subplot(2,1,2) stem(f,abs(Xf)/length(y)); ti...

7 mois ago | 0

| accepted

Answered

Branching points problem in binary image

[I,J]= find( bwmorph(BW,'branchpoints') );

Branching points problem in binary image

[I,J]= find( bwmorph(BW,'branchpoints') );

7 mois ago | 0

| accepted