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Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

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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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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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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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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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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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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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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

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How to plot a line with angle of 'Orientation' and length of 'MajorAxisLength' through 'Centroid'?
Hi Ivan, Would <http://blogs.mathworks.com/steve/2010/07/30/visualizing-regionprops-ellipse-measurements/ this example> from ...

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Tracing boundaries in a binary image
Hi guys, The question relates to the tracing of a boundary in a binary image. What I am interested in doing are the following...

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How to truncate/modify a file name
Thank you both for your answers!

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How to truncate/modify a file name
Hi everyone, The question pertains to modifying file names during a batch processing operation. Basically, I would like to tr...

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Introducing a border/outline to objects in an image.
Hi everyone, I have a question about how to introduce an outline to a mask. Please check the original source image at: <http:...

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Using xlswrite() to store the output from regionprops()
Hi everyone, I am using the following code to output the results from a regionprops operation: clc clear all fi...

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How to selectively apply colors using label2rgb to a watershed segmentation
Hi everyone, I have a question regarding |watershed| and using |bwlabel|. From what it shows at the example (Please check the...

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