Sam Roberts

XMW Consulting

Last seen: oltre 5 anni fa | Attivo dal 2011

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XMW Consulting provides consultancy services in the areas of data mining and statistical analysis, specializing in the development of technical algorithms and applications with MATLAB®. http://www.xmwconsulting.co.uk http://www.xmwconsulting.co.uk/backslashblog http://www.linkedin.com/in/samroberts http://www.twitter.com/sllroberts Professional Interests: Data Mining | Statistics | MATLAB | Consultancy

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Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

oltre 13 anni fa

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

oltre 13 anni fa

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

oltre 13 anni fa

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Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

oltre 13 anni fa

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

oltre 13 anni fa

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

oltre 13 anni fa

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

oltre 13 anni fa

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

oltre 13 anni fa

Domanda

Force doc command to open a specified reference HTML page
Say I've written a class in a package, called mypackage.myclass. I've written my own HTML documentation for the package and ...

oltre 13 anni fa | 0 risposte | 3

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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...

quasi 14 anni fa

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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...

quasi 14 anni fa

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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 ...

quasi 14 anni fa

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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. Example...

quasi 14 anni fa

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

quasi 14 anni fa

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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 ...

quasi 14 anni fa

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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...

quasi 14 anni fa

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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.

quasi 14 anni fa

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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 ...

quasi 14 anni fa

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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...

quasi 14 anni fa

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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:...

quasi 14 anni fa

Domanda

Defining additional infix operators in MATLAB
Is there a way to define additional infix operators in MATLAB? Specifically, I'd like to define two infix operators "->" and ...

circa 14 anni fa | 1 risposta | 0

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changing color while using 'hist' in a bar-plot
Try: h = bar(y,'hist'); set(h,'FaceColor','r','EdgeColor','r'); If you take a look at the <http://www.mathworks.co.uk/help...

circa 14 anni fa | 2

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Problems starting Excel server
I ran into a similar issue recently. Are you working with the Click-to-Run edition of Microsoft Office? The click-to-run edit...

circa 14 anni fa | 3