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Feeds
Can I store row numbers of a matrix in a column without using any loop?
a = magic(3); a(:, 1) = [1:3]; % This will store the row index in the first column of 'a'
plus de 7 ans il y a | 0
| A accepté
calculate the percentage of B&W image
If 'BW' is your binary threshold image, pix = size(BW); no_of_pix = pix(1)*pix(2); no_of_white_pix = sum(sum(BW==1));...
plus de 7 ans il y a | 0
Remove for loop and reduce time
if true edges_a=min(ac1):1.25:max(ac1); grp_ac=discretize(ac1,edges_a); len = length(edges_a); aux...
plus de 7 ans il y a | 1
How to avoid for nested loops with if condition?
I don't think you need to use 'for' loop. The 2 'if' statements can be easily handled in MATLAB. index_of_1_in_id_and_RR = ...
plus de 7 ans il y a | 0
draw lines between specific points with known length
from what I have understood, you want to plot different line segments connecting points from your data. I took an example to exp...
plus de 7 ans il y a | 0
| A accepté
How to get pdist() values of all the rows of a matrix with respect to a row of the same matrix?
diffX = X - X(1, :); yourReqOutput = sqrt(sum(diffX.^2, 2));%first row will be 0 as it is distance from itself.
plus de 7 ans il y a | 0
Problems with drawing diagrams in MATLAB
Refer to <https://www.mathworks.com/help/matlab/ref/hold.html Hold> documentation. Example: x = linspace(-pi,pi); y1 ...
plus de 7 ans il y a | 0
Plot where x axis is the date, Part 2 (edited)
Assuming that you have the same number of data points as the number of dates. Create a datetime vector for the duration and plot...
plus de 7 ans il y a | 0
How do i copy a one matrix into another ignoring the ''NAN' elements in the matrix?
if 'a' is your 1st matrix, 'b' is your 2nd matrix, a = [17 24 1 8 15; 23 5 7 14 16; ...
plus de 7 ans il y a | 0
How to close the webcam after the image has been captured?
If the webcam object you are using to capture images is say 'camObject' use the below command to close the webcam clear ca...
plus de 7 ans il y a | 2
A résolu
Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...
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Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...
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Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...
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Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...
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Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...
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Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...
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Triangle Numbers Below N
This is an offshoot of <http://www.mathworks.com/matlabcentral/cody/problems/5-triangle-numbers Cody Problem 5: Triangle Numbers...
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Program an exclusive OR operation with logical operators
Program an exclusive or operation *without* using the MATLAB function xor. Use logical operators like |, &, ~, ... instead. ...
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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.
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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...
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Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...
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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. Examp...
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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...
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Squaring Matrix
Square the following matrix using matlab % A = 1 2 3 4 5 6 7 8 So new matrix should display...
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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0
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Is this triangle right-angled?
Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return f...
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