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Draw a x-by-x matrix 'Denmark flag'(Euro(2020)
Draw a x-by-x matrix 'Denmark flag' using '4' and '1'.(x is odd and bigger than 4) Number 4: Caption S.Kjær and number 1: K.S...

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Reindex a vector
You are given two vectors of equal length. Vector N has numeric values (no Inf or NaN) while vector IDX has integers. Place th...

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intersection of matrices
Given two matrices filled with ones and zeros, determine if they share a common row, column entry. These matrices are of identi...

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Adding Legend to Bar Graph
If you are concerned of coloring all bars specifically, then you need to use this code: figure() Labelit = {}; CL = [1 0 0; 0...

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Gallery function, learning
write a Function, edit something or Add something that give us like the following for random n: n=2 ans= [ 0 1 ...

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Numbers spiral diagonals (Part 1)
Inspired by Project Euler n°28 et 58. A n x n spiral matrix is obtained by starting with the number 1 and moving to the right...

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Divisors for big integer
Inspired by Problem 1025 and Project Euler 12. Given n, return the number y of integers that divide N. For example, with ...

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Sum of big primes without primes
Inspired by Project Euler n°10 (I am quite obviously a fan). With problem n°250 by Doug, you can find some global methods to ...

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Fit an exponential curve
1st of all, your data's good fit is not 6.5*exp(a*x) that is why cftool is giving you the best fit that differs from your expect...

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How can I find a character in a string?
Hi, Here is one of the many possible solutions to your exercise: clearvars fid = fopen('TEXT__R.txt', 'r'); % Your text f...

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How to do a boxcar smoothing in mathlab ?
You can easily employ the following data filtering fcns: doc smooth doc filter doc conv https://www.mathworks.com/help/curve...

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Migrating 2015b code to 2018b
In fact, in general all M-files (Simulink .slx and .mdl files) are forward compatible. However, there a few fcn/command syntaxes...

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Delete first row matrix and records new value
Have you read this documentation for DAQ tools and fcns of MATLAB: https://www.mathworks.com/products/data-acquisition.html ...

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How to conditionally format a variable with fprintf
Hi, Here is an easy solution with if cond operator: ... fprintf(fid, '%s\n', T_names{:}); for ii=1:numel(y) if y{ii}~=0 ...

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I don't understand how to use the sgolay function for signal edges
Start your code with: clearvars Then it should work

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Adding Legend to Bar Graph
Hi, here is an easy solution to your exercise: Labelit={}; LEG = {"Jump", 'Run', 'Squat', 'Cycle', 'Other'}; for ii=1:5 b...

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Experts of MATLAB, how did you learn? Any advice for beginner/intermediate users?
Really great points on practical and theoretical aspects how to study and master programming in MATLAB environment. My learnig e...

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How to get the normalized data from the histogram
See this doc (check for normalization under property of histogram): https://www.mathworks.com/help/matlab/ref/matlab.graphics.ch...

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Overlapping graphs in figure
Here is a bit edited and corrected code: figure() for i=1:length(nodos)-1 plot([nodos(i):0.01:nodos(i+1)],polyval([Mx(:,:,i...

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Sketch the graph using matlab
f=@(x, y)(x.*y.*sin(x-y)./(1+x.^2+y.^2)); syms x y dFxy = diff(f,x)+diff(f, y); fimplicit3(f); hold on; fimplicit(dFxy, 'k', ...

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Saving a Datasource programmatically
The last line in your posted code: saveAsJDBCDataSource() is not MATLAB's builtin fcn unless you have your own or 3rd party fcn ...

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why matlab take a lot of time in the symbolic calculation
The problem with integral2 calculation part not with vpasolve(). You need to check the limit values for xmin, xmax, ymin, ymax i...

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Regression plot help for a range of data
No need to employ meshgrid() for calculations instead, use color ":" operator that performs vectorized calcs. L=...; u=......

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Logical indexing in cell array
Now, what michio suggested works perfectly ok: b = {'1' '2' '3' '4' '5' '6'}; b(cellfun(@(x) strcmp(x,'3'), b))={'Found 3'} S...

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Vectors must be the same length.
A small err in t's size: ... t = t(1:end-1); % 1 last value has to be removed. ...

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Sketch the graph using matlab
Start with fimplicit(@(x, y)...)

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I have a problem saving data
Or save in a different directory, e.g.: save('C:\Users\..\realizacionU12A') Change your current directory (cd ) and then save...

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How to use if statement for than one variables?
Note that for loop and "if" based calcs are very slow and inefficient. Anyhow if indeed you wish to fix your code, then check ...

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How to use if statement for than one variables?
There are several errs in your loop code that is not advised. Just because it is slow and inefficient. Here is an easy sol isnt...

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Sum of a series containing table column data
What is the value of k? Just presuming k is taken from the number of elements in T, the calc can be done, e.g: k=0:numel(T)-1; ...

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