Question

Why subs symbolic fails here

How to make subs work for expression that are not identically simplified from the 'simlify' function. The expressions bellow ar...

3 meses ago | 1 answer | 0

Question

Symbolic collect and display

I would lie to display the coefficients before the expansion terms of the cos one by one. syms x y f = expand(sin(x + 3*y));...

3 meses ago | 1 answer | 0

Question

Rotation of curve question

I am trying to rotate a curve about a point (yellow asterisk) and do not obtain a symmetric result. Xr = (x-XXc)*cos(delta) + ...

4 meses ago | 1 answer | 0

Question

speed for loop in sum

Can the for loop be removed ? x=linspace(-2,2,100); %some vector [X,XX]=meshgrid(x,x); %some matrix a=1/2;%some constant A0...

9 meses ago | 1 answer | 0

Question

Numerical value for sum of bessel functions

I would like to find as numerical value the sum of bessel functions A0 . Is it possible to speed it ? x= linspace(-2,2,100)...

9 meses ago | 1 answer | 0

Question

Conditional 'for loop', simpler ?

Is it possible make a for double loop simpler. x=linspace(-2,2,100); s=1/2; [X,Y]=meshgrid(x,x); A = X.^2; B = Y; for k=1:si...

9 meses ago | 1 answer | 0

Question

How to create a circle with segments of specific colors

I am trying to create an image of a circle with inner and outer radius, that is divided radially in segments. The...

9 meses ago | 1 answer | 0

Question

Choose a number from counter by key pressing

I would like to have a repeating sequence in time of numbers 1 to 100. When a key is pressed to display the current number a...

más de 1 año ago | 1 answer | 0

Question

Is there a function to draw the cie chromaticity diagram ?

Is there a function to draw the CIE chromaticity diagram ? How to use plotChromaticity ?

más de 1 año ago | 2 answers | 0

Question

How to make 2D rainbow ?

How to make a 2D rainbow plot like https://en.wikipedia.org/wiki/Visible_spectrum#/media/File:Spectrum.svg <https://en.wiki...

alrededor de 2 años ago | 1 answer | 0

Question

How to make a Riemann surface plot of simple analytic functions ?

How to make a riemann surface plot of simple analytic functions ? The code below does not give the correct plots. clear al...

alrededor de 2 años ago | 0 answers | 0

Question

How to write to word file using utf-8 encoding

I cannot save cyrilic to word file. I tried also reading a text file in utf8 but cannot write it with the same encoding. How t...

más de 2 años ago | 1 answer | 0

Question

How to copy only paragraph from text file

I would like to copy a paragraph from text file ( Sample text Sample text). The paragraphs are divided by 1-1 like numbering....

más de 2 años ago | 1 answer | 0

Question

How to display info with mouse over text region inside a figure

Is there a way to display information when you put the mouse over a text region inside a figure. * x = linspace(-3,3); ...

más de 2 años ago | 1 answer | 1

Question

How to sort the output of variables of cell array ?

I would like to sort the output of variables fx1 with the first digit and preserve the rows. sortrows(data,1) does not work ...

más de 2 años ago | 1 answer | 0

Question

The inputdlg stays open

I would like to to have an input window and have the ability to change the input data. The code below uses inputdlg. The pro...

más de 2 años ago | 1 answer | 0

Question

Cyrylic in Matlab .m file save and run issues

I am sure there should be a solution out there for using matlab with different alphabet that Latin. When I run a script with ...

más de 2 años ago | 1 answer | 0

Question

value from string ?

I would like to use vectarrow function to draw vectors: <https://www.mathworks.com/matlabcentral/fileexchange/7470-plot-2d-3d...

más de 2 años ago | 1 answer | 0

Question

How to compare non latin letters?

I would like to assign a number to a specific letter of name. But the name is let say in Cyrillic 'Том'. Now the isletter...

más de 2 años ago | 1 answer | 0

Question

How to convert 2D image of circle shape to 2D straight line ?

I have an image 2D that looks pretty much like donut how to convert it to straight lines ? Basically I would like to sum over...

más de 3 años ago | 1 answer | 0

Question

How to solve differential equation of 3 order analytically

I would like to solve a system of differential equaions x''[t] == -a0*(a1 - b*z'[t])*cos[w*t], x[to] == 0, x'[to] == 0 ...

más de 3 años ago | 1 answer | 0

Question

How to plot second y axis y2 that is just related to y1 as f(y1)

I have a plot on y1 axis. I would like to have units conversion on axis y2, as f(y1). How can you plot two units on one graph...

más de 3 años ago | 1 answer | 0

Question

How to distribute a vector in histogram in a loop ?

I have loop that generates a vector x of different size each iteration. I would like to just sum the values of the vector x t...

más de 3 años ago | 0 answers | 0

Question

Full control of plot axes and labels?

I am having troubles with plot of figure. Seems it has alot of data point and respond quite slowly when I tried to change the fi...

más de 3 años ago | 0 answers | 0

Question

How to manipulate cell array of vectors (just numbers ) that are not same length?

I want to plot cell array M{k} that has vectors of different size. How to do it ? How to transpose it ? plot(M{:}) retur...

más de 3 años ago | 2 answers | 0

Question

How to pause execution of script ?

I want to pause execution of script and continue later ? How to do it ?

más de 3 años ago | 1 answer | 0

Question

How to store vectors with different size in a loop ?

How to store vectors with different size and how to access them. M(k) found_roots F = @(t) cos(t)*exp(-t); A...

más de 3 años ago | 1 answer | 0

Question

How to integrate integral(integral(cos(t),-10,t) ,t1,t2)

How to integrate numerically Z(t1,t2) ? My function is more complicated than cos but is analytical. integra...

más de 3 años ago | 1 answer | 0

Question

How to get value from string II = strcat('A', num2str(la));

I want to plot few matrices A1 A2 A3 A4 A5 and call them in loop to make a movie. I am trying to make a string II = strcat('A',...

más de 3 años ago | 2 answers | 0

Question

How to plot with pcolor one 2D function with two x axis ?

I would like to plot one function with two x axis. One on the bottom one on the top. The top is just different vector. How to a...

casi 4 años ago | 1 answer | 0