# Catalytic

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**Content Feed**

Close a specific area but do not close all the others

What if you convert the interior of the bubbles to foreground? load BW N=round(numel(BW)/10); BW=~BW; BW0=BW; BW=bwarea...

3 months ago | 0

| accepted

z1 and x variables in algebraic equations

"The equations that I am trying to solve are quite big that even wolfram does not provide a 'legible' answer." There is no poin...

3 months ago | 0

| accepted

value of delta(w-w0) ?

The original expression that you gave is the simplest expression for the spectrum.

3 months ago | 0

How to resize multiple folder images and save it in MATLAB?

Yes, that should be easy, but you haven't told us what part of it you're having difficulty with. If I had to guess, you are stru...

6 months ago | 0

How to solve an equation with matrices?

Kx=( (B*Delta)\(Am-A) ).'; Kr=( (B*Delta)\(Bm) ).';

8 months ago | 0

| accepted

slp method to minimize function

The error message was generated by your own code, in this line assert(length(x)==5, "x should be 5 elements long, but instead ...

11 months ago | 0

why vectorize function is not recommended?

A warning without an explanation is not a real warning. I say you just ignore it.

12 months ago | 1

Problems running gpuArray function - CUDA driver

Matlab R2020a requires CUDA Toolkit 10.1.

1 year ago | 0

3D reconstruction from a 2D image

and I tried to use streo calibrator but it is giving error ' Dimensions of arrays being concatenated are not consistent matlab '...

1 year ago | 0

Line length and orientation angle of two or more intersecting lines

You should probably be using houghlines instead of regionprops.

1 year ago | 0

| accepted

Accessing subclass methods from abstract superclass

classdef (Abstract) ParentClass %PARENTCLASS Testing properties of abstract classes methods (Abstract = true, St...

1 year ago | 0

Indexing a 3D matrix with a 2D matrix

units=sub2ind([G,N],units,repmat(1:N,G,1) ); L(:,units)=temp(:,:);

1 year ago | 0

Plotting exponential periodic function

What should you do? You should correct whatever mistake it is you made.

1 year 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...

1 year ago | 1 answer | 1

### 1

answeraccessing cell data using brace indexing,

You need to check what predictors really is. It is not a cell array, as you believe.

2 years ago | 0

Load mat files more efficiently than if, elseif statement

filename=fullfile('Documents/event_picks', "event"+events); S=load(filename); x1=S.x1; y1=S.y1;

2 years ago | 0

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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');

2 years 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...

2 years 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; ...

2 years 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...

2 years ago | 2 answers | 0

### 2

answersIntegrating 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?

2 years 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(...

2 years 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...

2 years ago | 0

Confusion matrix not being clearly visible for larger output classes

See the ConfusionMatrixChart Properties.

2 years 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 ...

2 years 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...

2 years ago | 0