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**Content Feed**

Possible to vectorize xcorr?

After some time, I realized that x is the same throughout all calculations, which means that I can pre-calculate both it's FFT a...

meer dan 8 jaar ago | 0

Question

Possible to vectorize xcorr?

Greetings. Currently my workstation can't keep up when I attempt to calculate the cross correlation for very long signals. ...

meer dan 8 jaar ago | 1 answer | 0

### 1

answerQuestion

Extreme gain for low pass filter

% Filter constants Wp = 5e3*2*pi; Ws = 9.5e3*2*pi; Rp = 2; Rs = 45; % Butterworth lowest order [n,Wn] = ...

ongeveer 9 jaar ago | 1 answer | 0

### 1

answerQuestion

Arduino Run on Target Hardware + Stateflow

Hi! I'm trying to setup Arduino through Simulink on R2012a and use Stateflow. But when I try to deploy (Run on Target) it com...

ongeveer 9 jaar ago | 2 answers | 0

### 2

answersSolved

Check if sorted

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

ongeveer 9 jaar ago

Solved

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...

ongeveer 9 jaar ago

Solved

Weighted average

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

ongeveer 9 jaar ago

Solved

Pizza!

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

ongeveer 9 jaar ago

Solved

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...

ongeveer 9 jaar ago

Solved

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...

ongeveer 9 jaar ago

Solved

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 ...

ongeveer 9 jaar ago

Solved

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 ...

ongeveer 9 jaar ago

Solved

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...

ongeveer 9 jaar ago

Solved

Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

ongeveer 9 jaar 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 ...

ongeveer 9 jaar ago

Solved

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...

ongeveer 9 jaar ago

How can I get in code the path of currently running deployed matlab function

_pwd_ also returns the current path. This is what I use in my GUIs.

meer dan 9 jaar ago | 0

| accepted

The thickness of border lines on a plot (different than that of the inner lines)

I found that the figure automatically chooses the renderer ZBuffer, which is the cause of your display issues. I can't answer as...

meer dan 9 jaar ago | 0

How to tell Matlab to ignore NaNs in calculations/loops

data_vec = [1 2 3 4 5 NaN 7 8 NaN 10 12]; data_vec(~isnan(data_vec)) ans = 1 2 3 4 5 7 8 10 12

meer dan 9 jaar ago | 0

How to calculate hash sum of a string (using java)?

*Solution:* The trick here is to input an ascii representation of your string (hence, the double(string) call). MessageDigest...

meer dan 9 jaar ago | 3

| accepted

Question

How to calculate hash sum of a string (using java)?

Couldn't find this very easily (without including a bunch of c-mex files etc) so I thought I'd post it here for future reference...

meer dan 9 jaar ago | 2 answers | 0

### 2

answersQuestion

Count the number of trend changes in a vector.

I need to count the number of times a vector increases/decreases. E.g vec = [0 0 1 2 4 4 2 0 1 2 3] diff(vec) ans ...

meer dan 9 jaar ago | 3 answers | 0

### 3

answersQuestion

XML parsing vs regexp

I'm trying to extract values from two elements in a pretty large xml. I'm stuck between doing it "the right way" and doing it "t...

meer dan 9 jaar ago | 1 answer | 1

### 1

answerEigenvalue calculation in MATLAB

From <http://www.mathworks.se/help/techdoc/ref/eig.html> [V,D] = eig(A,B,flag) specifies the algorithm used to compute eigen...

meer dan 9 jaar ago | 2

Having trouble compiling uigetfile function

It always works for me. It could be that you only call filename = uigetfile('*.xls','Select your file'); Instead, you sho...

meer dan 9 jaar ago | 2

| accepted

Changing values in 2D array using logical operators

aa = rand(10, 10); aa(aa < 0.5) = NaN;

meer dan 9 jaar ago | 0

| accepted

Count the number of trend changes in a vector.

I think I've cracked it. My logic follows from; # I wish to count the number of first derivative changes. # I wish to exclud...

meer dan 9 jaar ago | 0

How can I Read or get the Values one by one from matrix variable or array?

z_elem = nnz(nnz == 0) nz_elem = nnz(nnz ~= 0) Then do your calculations on each.

meer dan 9 jaar ago | 0