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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 ...

13 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.

13 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 ...

13 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...

13 years ago

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Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

13 years ago

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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...

13 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:...

13 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...

13 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...

13 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...

13 years ago

Solved


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 ...

13 years ago

Answered
Check for existence of mat-file in search path
Always too fast to ask. Seems like just adding the extension works fine, e.g. exist('mandrill.mat') returns 2. See comment fi...

14 years ago | 2

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Question


Check for existence of mat-file in search path
Just came over an "interesting" problem. If I run |exist('mandrill','file')|, I get false back, which I normally would interpret...

14 years ago | 1 answer | 1

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Possible to "expand" function handle?
I've written a function that returns a function handle to a Lagrange polynomial L(x): function L = lagrange(xv,yv) % m...

14 years ago | 1 answer | 0

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Using IVI-COM IviRfSigGen to generate an ARB signal
Which VSG from Agilent do you use? If you have the instrument control toolbox in Matlab, controlling the instrument thru a GPIB ...

14 years ago | 0

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Sort cell array with numeric data by values of first index in matrix
Managed to figure it out: firstIdx = cellfun(@(x)x(1,1),Cn); [dummy,order] = sort(firstIdx); Cns = Cn(order);

14 years ago | 1

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Question


Sort cell array with numeric data by values of first index in matrix
Hello, I got a set of contour data obtained by [C h] = contour(X,Y,Z) which I want to split into a cell array and sort with r...

14 years ago | 1 answer | 0

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Contour plot in Smith chart - how to do it?
I got a set of measured load-pull (LP) data from an amplifier, which I'd like to plot as contours in the Smith chart (an example...

14 years ago | 1 answer | 0

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Read string and data (double matrix) of uknown size from file "efficiently"
I'm working with converting a piece of Scilab code to MATLAB, where I want to process data in some text files that I got. The co...

14 years ago | 1 answer | 1

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How to decide if a plot is surf or mesh based on graphics handle data?
Lets say I have a 3D plot which I want to export to another format, can I in any way tell if the plot is a surface, or a mesh by...

15 years ago | 1 answer | 0

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Get current colormap used on i.e. surfaceplot as string
Is there any way that I can get the current colormap of i.e. a surface plot returned as a string? If I have a plot, e.g. x...

15 years ago | 1 answer | 0

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Answered
Writing MEX code for LMS filter: some difficulties with my implementation
I found the error; wi[m] = wi[m]+2*mu*(er[n]*xti[n]-ei[n]*xtr[m]); /* should be wi[m] = wi[m]+2*mu*(er[n]*xti[m]-ei...

15 years ago | 0

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Question


Writing MEX code for LMS filter: some difficulties with my implementation
I'm trying to implement a MEX function for a LMS filter (which I've already implemented in MATLAB (*.m)) in order to improve my ...

15 years ago | 1 answer | 0

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Evolution of coefficients of adaptive LMS filter
Quickly written based on LMS algorithm at Wikipedia (which I think originate from Haykin's "Adaptive Filter Theory 4th Ed.") ...

15 years ago | 1

Answered
Save a file with own extension in menu GUI
Something like this? [filename pathname] = uiputfile('*.sin','Save file as'); save(fullfile(pathname,filename),'varname','-...

15 years ago | 0

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Answered
export figure with textures and colors ...
Not sure if this will solve it, but have you tried changing the rendering? http://www.mathworks.com/help/techdoc/creating_plo...

15 years ago | 0