Answered
how to integrate a function from 0 to inf?
You can, but it would require... an infinite time :) The answer mostly depends on your function. You could evaluate the funct...
how to integrate a function from 0 to inf?
You can, but it would require... an infinite time :) The answer mostly depends on your function. You could evaluate the funct...
8 years ago | 0
Submitted
quiver_tri(x,y,u,v,varargin)
Quiver plot with filled triangles head
8 years ago | 9 downloads |
Answered
Random number not repeatable with the same seed
The number of threads shouldn't affect your script, because matlab only use it internally. If you don't use a parfor or some too...
Random number not repeatable with the same seed
The number of threads shouldn't affect your script, because matlab only use it internally. If you don't use a parfor or some too...
8 years ago | 0
Answered
Problem related to automatic isolation/separation/ segmentation of each tooth from dental x-ray image
It's not an easy task. Since there is no specific edge, brightness or anything that defines the shape of each tooth, I reckon th...
Problem related to automatic isolation/separation/ segmentation of each tooth from dental x-ray image
It's not an easy task. Since there is no specific edge, brightness or anything that defines the shape of each tooth, I reckon th...
8 years ago | 0
| accepted
Answered
How to implement a non uniform blur?
I don't know if this would be the best solution, but what you need is basically a filter that depends on the spatial position. I...
How to implement a non uniform blur?
I don't know if this would be the best solution, but what you need is basically a filter that depends on the spatial position. I...
8 years ago | 0
Answered
Quickly load and add big matrices
The problem with loading big data is not Matlab, but the speed of you hard disk. The only way to load data in a quicker way is t...
Quickly load and add big matrices
The problem with loading big data is not Matlab, but the speed of you hard disk. The only way to load data in a quicker way is t...
8 years ago | 0
Answered
Convert binary ROI to polygon
You can use bwboundaries to get the boundaries of a binary image. If you want to sort them, you can evaluate the centre of yo...
Convert binary ROI to polygon
You can use bwboundaries to get the boundaries of a binary image. If you want to sort them, you can evaluate the centre of yo...
8 years ago | 0
Answered
Double sum of a series
Why do you want to implement you own convolution when Matlab already has a very fast function for that? For loops are slow. ...
Double sum of a series
Why do you want to implement you own convolution when Matlab already has a very fast function for that? For loops are slow. ...
8 years ago | 0
Solved
Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...
8 years 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 ...
8 years ago
Question
Understanding MATLAB file access
Hello, I'm working on a script where I have to read hundreds of images and do some calculations on them. I'm using a simple f...
8 years ago | 1 answer | 0
1
answerSubmitted
Transform velocity field into wall coordinates
Interpolate velocity field on a wall-based grid. Useful to plot boundary layer
8 years ago | 1 download |
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 ...
8 years ago
Question
What is drawnow doing?
Hello everyone. I'm working on a code where I need to alternate the display of two complex plots in a very short time. The ti...
8 years ago | 1 answer | 0
1
answerSolved
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...
8 years ago
Solved
Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
8 years ago
Question
Optimization of variable-length array
Hello, I'm trying to optimize a code where I have an array with unknown size and I'm not sure about two solutions that I have...
8 years ago | 0 answers | 1
0
answersSubmitted
xcorr2_fft(a,b)
Two-dimensional cross-correlation evaluated with FFT algorithm
8 years ago | 16 downloads |
Answered
Discrepancy between xcorr2 and fft2
I figured it out by myself, and I uploaded a script on the file exchange to get a numerically equivalent function of xcorr2 whic...
Discrepancy between xcorr2 and fft2
I figured it out by myself, and I uploaded a script on the file exchange to get a numerically equivalent function of xcorr2 whic...
8 years ago | 0
Question
Discrepancy between xcorr2 and fft2
Hello! I want to implement an fft cross-correlation in my algorithm in order to replace the much slower xcorr2. In theory, d...
8 years ago | 1 answer | 0
1
answer
Question
Does keyboard slows down the code?
Hello. I was doing some tests to speed up my code, and I realized that having a keyboard in the code slows it down, even if t...
9 years ago | 1 answer | 0
1
answerQuestion
Parfor loop and variable length output
Hello everyone, I would like to speed-up a code using a parfor loop but my function is not straightforwardly suitable for it....
9 years ago | 1 answer | 0
1
answerQuestion
Boolean matrix in mex file
Hello everyone, I'm trying to read a logical matrix in a mex file with matlab. The way I usally do for reading matrices in ma...
9 years ago | 1 answer | 0
1
answerQuestion
Automatically generate functions from snippet of a script
Hello, When I write a code in matlab, I usually start writing a script. When the script gets bigger, I transform it into a fu...
9 years ago | 0 answers | 1
0
answersAnswered
Does it possible to use a function with persistent variables several times?
If you want to clear the persistent variable you need to do it explicitly: clear example
Does it possible to use a function with persistent variables several times?
If you want to clear the persistent variable you need to do it explicitly: clear example
9 years ago | 0
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 ...
9 years 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...
9 years ago