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Draw 'D'.
Draw a x-by-x matrix 'D' using 0 and 1. example: x=4 ans= [1 1 1 0 1 0 0 1 1 0 0 1 1 1 1 0]

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file parsing identifier need to choose the correct identifier
st = '04_T_A_tx01_3009.txt'; id_cell = regexp(st,'tx\d+','match'); id_char = id_cell{1};

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Guess Cipher
Guess the formula to transform strings as follows: 'Hello World!' --> 'Ifmmp Xpsme!' 'Can I help you?' --> 'Dbo J ifm...

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Specific Element Count
Given a vector _v_ and a element _e_, return the number of occurrences of _e_ in _v_. Note: NaNs are equal and there may be n...

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Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

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Draw a '0' in a one matrix!

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Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

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Converts numbers into characters
Converts numbers into characters

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Find the max element of the array
Find the max element of the array

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Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

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the average value of the elements
Calculate the average value of the elements in the array

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Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

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calculate the length of matrix
input 1 array, calculate the length

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to the 2 all elements
to the 2 all elements

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Double all elements in the array
Duplicate all elements in the array

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Draw 'O' !
Given n as input, generate a n-by-n matrix 'O' using 0 and 1 . example: n=4 ans= [1 1 1 1 1 0 0 1 ...

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Draw 'C'.
Given x as input, generate a x-by-x matrix 'C' using 0 and 1. example: x=4 ans= [0 1 1 1 1 0 0 0 ...

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Draw 'B'
Draw a x-by-x matrix 'B' using 1 and 0. (x is odd and bigger than 4) Example: x=5 ans= [1 1 1 1 0 1 0 0 0 1 ...

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Create triangulated beam with meshgrid
https://www.mathworks.com/help/matlab/delaunay-triangulation.html

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How to utilize an existing API to download weather data and use it for calculations in a MATLAB script?
Build a string that is structured like this and use it as the input to webread: https://developer.nrel.gov/api/solar/data_query...

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I am trying to replicate the “Planning Radar Network Coverage over Terrain” example in MATLAB and want to know how can I change the region of this example?
You need the correct SRTM elevation file for the area you're interested in. These DTED files are only 1x1 degree. You're specify...

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Average data from multiple csv files
Here's an example of how to approach this. You'll have to make this work with your specific data and functions. You can do this ...

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How to share variables between button functions in App Designer?
You want to store these variable as a Property. https://www.mathworks.com/help/matlab/creating_guis/share-data-across-callbacks...

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Get the area codes from a list of phone numbers
Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes. s = '508-647...

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How can I overlay a shapefile onto a geoscatter plot?
Plotting shapefiles on a geographic axis isn't always the best experience. You'll note that geoshow is intended for use with a s...

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Download MATLAB2020b for linux
On the download page you can select your release on the left hand side, and then you can selection your OS via the main download...

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Help plotting satellite data?
geoshow(lat(:), lon(:), long(:),'DisplayType','ImageMap');

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Basic question about loops
You could make use of genvarname, but this would work too. for i = 2:5 eval(['Idx' num2str(i) ' = Idx(:,' num2str(i) ');']...

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Convert nifti file containing a brain region of interest to a logical vector (number of seeds (in this case 1) x number of voxels?
Start here: https://www.mathworks.com/matlabcentral/fileexchange?q=NIfTI

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Load .slk file format (excel can open it, but can't import it to matlab)
data = readtable('your_spreadsheet.slk','FileType','spreadsheet');

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