Indexing a 3D matrix with a 2D matrix
units=sub2ind([G,N],units,repmat(1:N,G,1) ); L(:,units)=temp(:,:);

más de 1 año ago | 0

Extract the center of the coarse curve of binary image
bwskel(~Image)

más de 1 año ago | 0

Plotting exponential periodic function
What should you do? You should correct whatever mistake it is you made.

más de 1 año ago | 0

Question

Make axis background transparent
Is there an alpha parameter that sets the transparency of a plot's background axis color? I would like to be able to export a pl...

casi 2 años ago | 1 answer | 1

### 1

accessing cell data using brace indexing,
You need to check what predictors really is. It is not a cell array, as you believe.

más de 2 años ago | 0

Load mat files more efficiently than if, elseif statement

más de 2 años ago | 0

| accepted

How to find min, max, and movmean for each page in multidimensional arrays
MIN=min(A,[],[1,2]); MAX=max(A,[],[1,2]); MOVMEAN=convn(A,ones(1,k)/k,'valid');

más de 2 años ago | 0

How can I use graph object info to find: areas, number of sides, and perimeter lengths of a each connected polygon within a network of polygons?
Your attachment doesn't contain a graph object. However, perhaps it will help to mention that if you have the vertices of a poly...

más de 2 años ago | 0

Could someone write some code to extract details within a for loop?
Something like this.... function stuff=getStuff(tgraph,arcNumber) AP=tgraph.ArcPoints; i=arcNumber; ...

más de 2 años ago | 0

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...

más de 2 años ago | 2 answers | 0

### 2

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?

más de 2 años ago | 0

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(...

más de 2 años ago | 0

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...

más de 2 años ago | 0

Confusion matrix not being clearly visible for larger output classes
See the ConfusionMatrixChart Properties.

más de 2 años ago | 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 ...

más de 2 años ago | 0

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...

más de 2 años ago | 0

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...

más de 2 años ago | 0

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...

más de 2 años ago | 0

Build new matrix from look up table
C=CD( interp1(B,1:numel(B),A,'nearest') );

más de 2 años ago | 1

| accepted

how to calculate area, perimeter and circularity of objects in an image using regionprops
Notice - >> a=1; %not displayed >> b=2, %displayed b = 2

más de 2 años ago | 0

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...

más de 2 años ago | 1

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...

más de 2 años ago | 1

| accepted

How to curve fit an equation with sigma function
C = polyfit( sqrt( x.^2+y.^2) , Z, N)

casi 3 años ago | 1

How can i determine the area in percentage of a clustered image?
Divide the membership of each cluster by the total number of pixels.

casi 3 años ago | 0

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...

casi 3 años ago | 1

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.

casi 3 años ago | 0

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

casi 3 años ago | 0

| accepted

hi every one, i need to ask a question, thank you
A=double(A); A(logical(A))=B;

casi 3 años 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 ...

casi 3 años ago | 1 answer | 0