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Sam Roberts


XMW Consulting

Last seen: 約4年 前 |  2011 年からアクティブ

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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...

約12年 前

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

約12年 前

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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".

約12年 前

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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...

約12年 前

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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...

約12年 前

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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...

約12年 前

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

約12年 前

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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...

約12年 前

質問


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 ...

約12年 前 | 0 件の回答 | 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...

12年以上 前

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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...

12年以上 前

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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 ...

12年以上 前

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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...

12年以上 前

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

12年以上 前

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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 ...

12年以上 前

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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...

12年以上 前

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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.

12年以上 前

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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 ...

12年以上 前

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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...

12年以上 前

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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:...

12年以上 前

質問


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 ...

12年以上 前 | 1 件の回答 | 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...

12年以上 前 | 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...

13年弱 前 | 3