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Domanda
What does this error message mean?
I've got two vectors: times = 0 0.0005 0.0050 0.0500 0.5000 5.0000 mittel = ...
oltre 11 anni fa | 3 risposte | 2
3
risposteCalculate max(diff(A)) fast and memory efficient.
Just as a comparison: I implemented the for loop way in Julia: elapsed time: 0.016319368 seconds
oltre 11 anni fa | 0
Domanda
Calculate max(diff(A)) fast and memory efficient.
Say I have a giant array A of 2 gb and I want to make something like an analog edge-detection: [max, index] = max(diff(A))...
oltre 11 anni fa | 3 risposte | 0
3
risposteDomanda
How do i calculate the frequency of signal with low sampling rate
I've got a sinusoidal signal with a low sampling rate: x = 0:0.2*pi:6*pi; y = sin(x) -0.25 + 0.5* rand(size(x)); Is...
oltre 11 anni fa | 1 risposta | 0
1
rispostaDomanda
How can I calculate max and min in degree?
I've got an Array with my Phase Phi in degrees:[ 170°,179°,180°,-179°...] ranging from -180° to 180° and I want to calculate how...
quasi 12 anni fa | 2 risposte | 0
2
risposteDomanda
Improper Arguments. Waitbar Error
I have problems using my waitbar. This is the code I want to run: h = waitbar(0,'uiae'); for file_num = 1:numel(files)...
oltre 12 anni fa | 0 risposte | 0
0
risposteDomanda
Vectorizing the creation of an offset vector
Is there any possibility to vectorize this piece of code: BIN_1 = 7; C = randi(10,1000,1); offset_vec = zeros(size(C...
oltre 12 anni fa | 2 risposte | 0
2
risposteHow to reduce the time to calculate the inverse of a matrix
I think the inv function implemented by Mathworks is as fast as it gets for the general purpose. There are two inv-functions in ...
quasi 13 anni fa | 0
Domanda
Optimize this program on a GPU
I'm trying to speed up my program on a GPU. But it is much slower than the CPU version, although I use a very powerful GPU. I ha...
quasi 13 anni fa | 1 risposta | 0
1
rispostaRisolto
Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...
quasi 13 anni fa
Risolto
Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...
quasi 13 anni fa
Risolto
How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...
quasi 13 anni fa
Risolto
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...
quasi 13 anni fa
Risolto
Too mean-spirited
Find the mean of each consecutive pair of numbers in the input row vector. For example, x=[1 2 3] ----> y = [1.5 2.5] x=[1...
quasi 13 anni fa
Risolto
Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...
quasi 13 anni fa
Risolto
Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]
quasi 13 anni fa
Risolto
Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...
quasi 13 anni fa
Risolto
The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".
quasi 13 anni fa
Risolto
Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...
quasi 13 anni fa
Risolto
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...
quasi 13 anni fa
Risolto
Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.
quasi 13 anni fa
Risolto
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...
quasi 13 anni fa
Risolto
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...
quasi 13 anni fa
Risolto
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 ...
quasi 13 anni fa
Risolto
Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...
quasi 13 anni fa
how do i sort a single row in terms of descending terms
If you only want to sort the first column have a look at B = sort(A,dim) http://www.mathworks.de/de/help/matlab/ref/sor...
quasi 13 anni fa | 0
How can you separate incoming serial data?
I don't have an Arduino, so I couldn't test it. But how about that: c_str=regexp(C,'?','split');
quasi 13 anni fa | 0
| accettato
Risolto
Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...
quasi 13 anni fa
Risolto
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...
quasi 13 anni fa
