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How to vectorize for loop of partial arrays?
Hi, this is a vectorized version of your loop. k = ones(1000,1); b = 10*rand(25,1); f = ones(25,1); a = 10*rand...
bijna 10 jaar ago | 0
How can I delete numbers in a matrix that is not equal to numbers in another matrix?
Hi, you can use logical indexing with the 'ismember' function: A= A(ismember(A,B))
bijna 10 jaar ago | 1
How can I calculate the product of elements in even positions in a vector using a for loop, without using sum or prod built-in functions?
Hi, you can use the modulo function to detect the even positions and then simply multiply the values. z = (50)*rand(1,100...
ongeveer 10 jaar ago | 0
Out of memory error with 8GB and 64bit
Hi, considering the mentioned size of a matrix, the matrix would occupy ~20GB or ~10GB in the case of single precision. With ...
ongeveer 10 jaar ago | 0
| accepted
Comparing more than two columns of a matrix using '<' or '>' symbol
Hi, you can achieve this by using B = diff(-A,1,2) < 0 You have to concatenate a column of zeros, so that A and B are ...
ongeveer 10 jaar ago | 0
If statement with 2 matrices
Hi, if statements on matrices can often be realized with logical indexing. Assuming the matrix B is of type 'logical', your ...
ongeveer 10 jaar ago | 0
| accepted
Why complex arrays take twice as much memory on GPU than on CPU ?
Hi, this behaviour is not a difference between CPU and GPU. It is the general case that the complex nuber uses twice the memo...
ongeveer 10 jaar ago | 0
Plotting data on a 2d plane with colorbar
Hi, an easy way of doing this is the scatter plot. Use it like this scatter(x,y,[],z,'filled') <</matlabcentral/answe...
ongeveer 10 jaar ago | 2
Solved
Sum the squares of numbers from 1 to n
For a given value of n return the sum of square of numbers from 1 to n. Example For n = 2 then sum of squares = 5 (1^2 + ...
ongeveer 10 jaar ago
In an assignment A(I) = B, the number of elements in B and I must be the same.
Hi, your problem is, that the dimensions of Rainfall and CN don't match. Use the the index idx or ~idx on CN. Also the operat...
ongeveer 10 jaar ago | 0
| accepted
Solved
Health app
A health app records a user's weight and displays the change in weight from the previous measurement to the next. Assign weightC...
ongeveer 10 jaar ago
Solved
Writing a while loop
Write a while loop that continues to increment userValue by 5 until userValue is less than 0.
ongeveer 10 jaar ago
Solved
Preset rpm speeds
A centrifuge has four preset speeds. Write a switch statement that assigns rpmSetting with the appropriate rpm speed given prese...
ongeveer 10 jaar ago
Solved
Vigenere cipher - be like Sherlock Holmes!
You're a young detective. Every detective needs a function to decrypt a vigenère cipher. It's a modification of a caesar cipher....
ongeveer 10 jaar ago
Solved
Is my wife right
This is question relies on the dilemma that every married man faces in his life. Which has one simple ans: So whatever the qu...
ongeveer 10 jaar ago
Solved
Calculate Simple Intrest for given data
P,N,R stands for Principle amount, No. of years and rate of intrest resp. Calculate intrest I
ongeveer 10 jaar ago
Solved
Remove All elements less than 5
Given an input vector x, remove all elements of x less than 5 . Example: Input x = [ 1 2 5 7 3 ] Output y is [ 5 7 ...
ongeveer 10 jaar ago
How it is possible to sum these two matrix as a vector?
If I understand you right, this should do it. function [C1,C2] = foo(A,B) C1 = zeros(16,4); C2 = zeros(16,4); i...
ongeveer 10 jaar ago | 0
| accepted
Solved
What is the next step in Conway's Life?
Given a matrix A that represents the state of <http://en.wikipedia.org/wiki/Conway's_Game_of_Life Conway's game of Life> at one ...
ongeveer 10 jaar ago
Solved
Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...
ongeveer 10 jaar ago
Solved
Counting in Finnish
Sort a vector of single digit whole numbers alphabetically by their name, in Finnish. See the Wikipedia page for <http://en.wik...
ongeveer 10 jaar ago
Solved
radius of a spherical planet
you just measured its surface area, that is the input.
ongeveer 10 jaar ago
plot a certain x,y values from a large matrix
You can use the colon operator to select a subset of your vector, like plot(x(500:2500),y(500:2500))
ongeveer 10 jaar ago | 0
Solved
Remove all the consonants
Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...
ongeveer 10 jaar ago
Solved
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...
ongeveer 10 jaar ago
Solved
Is it column vector?
Is it column vector? Check vector for column vector without using iscolumn function.
ongeveer 10 jaar ago
Solved
replace empty matrices with '[]'
for example a=1;a(:,1)=[]; returns a = Empty matrix: 1-by-0 use this as the input,and the output should be '[]...
ongeveer 10 jaar ago
