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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

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Retrieve data from several folders and structures
If I understand correctly you have data files in different folders and you want to take subset of that data and reorganize it in...

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

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How can I use pushbuttons in GUI to categorize a "like" or "dislike" of a image
Here is a very simple away around this... in the directory where you have the images try the following code: im = imageDatast...

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How to get environment password in script/function
The MathWorks does have a Database toolbox which does exactly what you are describing. That being said you probably would have t...

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i want to download MATLAB Arduino support package. How i can ???
This should help: https://nl.mathworks.com/matlabcentral/fileexchange/47522?download=true I got this link from: https://nl.ma...

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Read the output line by line
Hi, Not sure if I understand the problem correctly... are you trying to given an image with text get the text into MATLAB? If ...

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

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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...

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

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Is my wife right?
Regardless of input, output the string 'yes'.

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

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Add two numbers
Given a and b, return the sum a+b in c.

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

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Creating the Snake game using a classdef
Try adding drawnow after the plot.

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How can I get the maximum line of multiple graphs, starting from different x-values?
Maybe I miss understood but you could use min and max to achieve this: t = 0:.1:2*pi; for i = 1:4, y(i,:) = sin(t*i*2*pi);end;...

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How to fix number of elements in for loop?
There are couple of things here however the first is to get your code working: q= 0.2; E = 200*10^8; a= -6:6; n=numel(a); ...

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Write to txt, delimited by char(10)
x = ['a' char(10) 'b']; fp = fopen('test.txt','w'); fwrite(fp,x); fclose(fp); I am on a Mac and using R2018b. That being sai...

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color of line plot with marker problem
There are a couple of ways to solve this (I am using R2018b): plot(x,y,'-s','MarkerSize',10,'Color','red',... 'MarkerEdgeCol...

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Checking/Counting values in a given Timewindow
Hi JamJan, If I understand correctly you have a matrix with 2 rows, the first row shows times, and the second 1. You are aski...

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Can I write the output of a 'summary' command of a 'table'-variable to a variable ?
I believe as of R2017b you can do the following: a = summary(tab) This will return a structure with the information that s...

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How i Calculate the average number of even numbers in an array?
Hi Tomer, I am not sure if I understand your question correctly. In MATLAB to calculate the average you would use the func...

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How to copy and paste a single row in an excel file to another excel file?
I am using R2018b, and there are a couple of ways of solving this. I like the following: ds = spreadsheetDatastore(pwd,'Range...

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Image plot I am not able to create
I am using R2018b: a=readtable('dte2.txt'); plot(a.x_coordinate,a.y_coordinate,'.') Does this help?

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Add more zeros
Find code that adds one 0 to each sequence of 0 in a string (composed with only 0 or 1). For example: '1010' -> '100100' ...

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Reverse the Words (not letters) of a String
*Description* Change the words of a string such that the words appear in reverse order. You may assume that the string is a n...

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Space Saver
Remove all characters that are below a space in ASCII value.

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