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looking for an efficient way to activate all fprintf in the function
Probably not what you are looking for, but a quick way may be to just do a search and replace all (i.e., search for: "fprintf" r...

ungefär 12 år ago | 0

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How to manipulate Plot Legend to show markers and colours seperatly?
It can be done... you will have to do some finagling, but it can be done. Here is an example where we have 2 different datasets ...

ungefär 12 år ago | 8

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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...

ungefär 12 år ago

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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...

ungefär 12 år 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...

ungefär 12 år ago

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

ungefär 12 år 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...

ungefär 12 år 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...

ungefär 12 år 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...

ungefär 12 år 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 ...

ungefär 12 år 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...

ungefär 12 år 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.

ungefär 12 år 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...

ungefär 12 år 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 ...

ungefär 12 år 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...

ungefär 12 år ago

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

ungefär 12 år 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 ...

ungefär 12 år 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:...

ungefär 12 år ago

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

ungefär 12 år ago

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Love triangles
Given a vector of lengths [a b c], determines whether a triangle with non-zero area (in two-dimensional Euclidean space, smarty!...

ungefär 12 år ago

Answered
How to check if a file of certain type exists in folder?
You could try doing something like: dir_struct = dir( fullfile(your_path,'*pdf') ); if numel(dir_struct) == 0 % then ...

ungefär 12 år ago | 0

Answered
Plotting lognormal data on this type of graph?
The key ended up being *norminv*. Here is an example output of the program I made (see below for *probit* function): >> pro...

ungefär 12 år ago | 0

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Question

Plotting lognormal data on this type of graph?
I would like to plot data on a graph similar to that illustrated in the figure below (except it is upside-down from my conventio...

ungefär 12 år ago | 2 answers | 0

2

answers

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I have a rather large matrix. The data was sampled at 100 Hz. I want to the data to look like it was sampled at 5 Hz
Use *resample* - This is an example of why you may not want to take every Nth amplitude: <<https://lh5.googleusercontent.com/...

mer än 12 år ago | 0

Answered
use FFT in matlab and get phase plot
Here are the frequencies associated with the output from FFT: Nt = % Number of time samples Fs = ...

mer än 12 år ago | 0

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Answered
Area of a Spectrum
The area under your curve should just be: N = numel(x); dt = 1/fs; df = fs/N; y = fft(x)*dt; area_y = sum(abs(y))*d...

mer än 12 år ago | 0

| accepted

Answered
How to get back complete signal after doing IFFT
Can you provide an example of how you are performing the fft? Something like: a = your_dataset_in_the_time_domain; size_a ...

mer än 12 år ago | 0

Answered
How to run 3D FFT?
Have you checked out *fftn*?

mer än 12 år ago | 0

Answered
ifft and fft problem
Did you mean to use "fs_s" instead of "f_s" here: h1_s_hat = abs(fs_s.*ifft(ifftshift(h1_s_FT))); I guess that's why you...

mer än 12 år ago | 0

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Answered
[DISCONTINUED] MATLAB Answers Wish-list #2 (and bug reports)
I kind of wish that when we scrolled through the answers to questions (especially when there are many "answers" like this one), ...

mer än 12 år ago | 0