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**Content Feed**

Why does adding a space give vertcat error?

with a space, [1;1 +1] is interpreted as [1;1, +1]. [1;(1 +1)] will be OK.

9 days ago | 1

| accepted

Error using minmax newff

You are using char type variables, i.e filename a = {'abc', 'aa', 'b'; 'abc1', 'aa1', 'b1'} a = 2×3 cell array {'abc' ...

10 days ago | 0

Why is signal amplitude so low after applying FFT?

https://www.mathworks.com/matlabcentral/answers/162846-amplitude-of-signal-after-fft-operation https://www.sjsu.edu/people/burf...

17 days ago | 0

Array indices must be positive integers or logical values.

if length(c) is an even number, then (length(c)+1)/2 is not an integer

22 days ago | 0

Unrecognized function or variable 'snopt'. Error in Untitledidk (line 362) [x, f, inform, xmul, fmul] = snopt(xg, xlwr, xupr, xmul, xstate, ... What is this function

https://github.com/snopt/snopt-matlab Matlab interface for sparse nonlinear optimization software SNOPT. Requires the SNOPT so...

2 months ago | 1

Out of Memory. Infinite Recursion.

doc polylog Argument of the polylogarithm, specified as a number, array, symbolic number, symbolic variable, symbolic function,...

2 months ago | 0

| accepted

Question

how to use function handles

Instead of the following, I want to use function handles and move if-statments out of the loop: for n=1:10 if a==0 ...

2 months ago | 2 answers | 0

### 2

answersError while using syms in MATLAB AppDesigner

https://www.mathworks.com/matlabcentral/answers/166584-cannot-use-syms-command

2 months ago | 0

| accepted

Why am i getting the same error while plotting a function?

doc vpaintegral vpaintegral(f,a,b) numerically approximates f from a to b. vpaintegral(f,[a b]) is equal to vpaintegral(f,a,b)...

2 months ago | 0

Question

How do I do this without using try/catch?

I am using waitbar within Run_pushbutton_Callback (GUIDE GUI): function Run_pushbutton_Callback(hObject, ~, handles) try wb =...

2 months ago | 1 answer | 0

### 1

answerArray indices must be positive integers or logical values.

When x=1, then X_s(x-1) = X_s(0), which is not allowed in Matlab x = 1 x = 1 x = 2 x = 3 x = ...

3 months ago | 0

Array indices must be positive integers or logical values.

floating point problem; try to use x = round(k/0.2 - 4/0.2 + 1) k = 4.200000000000000 x = 2 k = 4.400000000000...

3 months ago | 1

Remove from a vector a certain number of elements

sim3 = sim1; sim3(sim3==sim2) = [];

3 months ago | 0

| accepted

Index in position 1 is invalid.

i as an index is not defined in your code, Matlab considers it as 1i by default

3 months ago | 0

| accepted

How can i repeat a formula without for loop?

M = [1,2; 3,4]; LM=log(M); A = 1:5; B = num2cell(A); C = cellfun(@(x) {x*LM}, B); D = cellfun(@(x) {exp(x)},C); D{:}

3 months ago | 0

| accepted

Make subplot use the full figure on buttondown click.

The following works as you requested. You can of course modify the code in more elegant way with numbering handles as ax(n) etc...

4 months ago | 0

| accepted

Solved

Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

4 months ago

Solved

Generate a vector like 1,2,2,3,3,3,4,4,4,4

Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

4 months ago

How to superimpose two figure, one to bottom right corner of larger.

fig1 = figure(1); % create figure1 pos1 = fig1.Position; % position of figure1: pos1 = [x1, y1, width1, hight1] pos2 = pos1;...

4 months ago | 0

| accepted

Plot of nested for loop for thickness variable

Place figure(1) with a number before for-loop and use plot(results(:,1),results(:,2)) only once. If you use figure() without an...

4 months ago | 0

| accepted

Error using vertcat Dimensions of arrays being concatenated are not consistent.

It seams that if there is a space between the real and imaginary parts of the number, Matlab considers it as two different numbe...

5 months ago | 0

| accepted

uicontrol callback function with single variable

The following works. Though, I cannot explain why function test(~,~,multiple)

5 months ago | 1

How to find points between two intersecting lines?

myData = [X,Y]; y1 = 3 - X; y2 = 2/3*X + 4/3; Y1 = Y(Y < y2 & Y > y1); X1 = X(Y < y2 & Y > y1); % or X1 = X(Y == Y1) myData...

5 months ago | 1

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Why are these two ways of writing the same integral giving me different results?

Use the option 'ArrayValued',true pot1=kappa*rho1*integral(f,0,pi,'ArrayValued',true);

6 months ago | 0

Writing titles and x/y labels inside a for loop and if-statements

remove stem(n, x) before if statement

6 months ago | 0

| accepted

3D Plot Color Map Gradation

Try this: cmp=colormap(turbo(256)); caxis([-0.5,0.5]); cmp1=cmp; cmp1(1:128,:)=flipud(cmp1(129:256,:)); colormap(cmp1); co...

6 months ago | 0

| accepted

Matrix display answers without sigmas

You may be running your code in the live editor. Running the code in a usual script or command window displays the result in t...

6 months ago | 0

| accepted

Question

minor grid in consecutive plots

If I run the following code (within a script or command window) several times, then the minor grids will be 'on' only every othe...

6 months ago | 1 answer | 0

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answerHow can I minimize the outer space for the figure or plot

You can do as follows: x=-2*pi:0.1:2*pi; y=sin(x); figure(1) ax=gca; ax.Position=[0.075 0.075 0.9 0.9]; % default position ...

7 months ago | 0

How to make a odd number plot look aligned using subplot or tiledlayout?

Happy with the following? x=-2*pi:0.1:2*pi; y1=sin(x); y2=cos(x); y3=sin(x); y4=sinh(x); y5=cosh(x); figure(1) clf su...

7 months ago | 0

| accepted