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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...

14 years ago

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

14 years ago

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

14 years ago

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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...

14 years ago

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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...

14 years ago

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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...

14 years ago

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

14 years ago

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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...

14 years ago

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

14 years ago

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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 ...

14 years ago

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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...

14 years ago

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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...

14 years ago

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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...

14 years ago

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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 ...

14 years ago

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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.

14 years ago

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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 ...

14 years ago

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

14 years ago

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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...

14 years ago

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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:...

14 years ago

Answered
Opening and writing into doc file
You will need to create a MATLAB COM object to be able to achieve this. See: <http://www.mathworks.co.uk/help/techdoc/mat...

14 years ago | 0

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Answered
How to copy copy column with loop?
Using 'repmat' is also a possibility: A = [ 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8] out = [...

14 years ago | 0

Answered
Why "Model arguments can not be used in non-tunable expressions"? in Referenced Simulink Models?
It would appear as if you are indexing the parameter 'mfgz' based on model parameters. Indexing of this form is not allowed if y...

14 years ago | 0

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rose diagram
The workaround I use to get the correct limits set on a polar plot is to simply draw a circle at your desired maximum, and set t...

14 years ago | 1

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structuring element
See: doc zeros doc ones You can then add/subtract or reallocate these arrays to get what you need.

14 years ago | 0

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How to display risetime of output response of my system in simulink?
Not entirely sure why you'd want to do this. But it is definitely possible - you should be able to do it with a combination of s...

14 years ago | 0

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Log log plot
See: doc loglog

14 years ago | 0

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How to draw a bar graph from cell array with different size length?
If you are going to pad out your arrays with zeros you don't even need to define it as a cell array, just use a matrix. Try t...

14 years ago | 0

Answered
How to check existence of worksheet in excel file
[A,B] = xlsfinfo('foofoo.xlsx'); sheetValid = any(strcmp(B, 'foo2'));

14 years ago | 4

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Answered
problem of memory
Also ensure that if you are generating Matlab Figures (as an intermediate step) with the 'Visible' property set to false that yo...

14 years ago | 0

Answered
how to load .mat in GUI every time the GUI runs and the GUI connect to simulink model
You call add a call to load('alphabet.mat') within the Simulink model's InitFcn callback if the parameters are only needed by th...

14 years ago | 1

| accepted