create a new matrix with elements from different sized matrices
조회 수: 10(최근 30일)
The aim is to create a matrix (C_n) from two different matrices (M) and (t_e1) using a equality condition. I am trying to use the following code to do this. However,it gives me output as a matrix with zeros.
for i= 1:length(int) %%length(int)=96
for j=1:length(M) %%length(M)=300
if M(j,i)==t_e1(j,1) %%t_e1 is of size 300*2 and M is 300*96
C_n(j,i)=t_e1(j,2); %%Want to check each element of M that equals (j,1)th element of t_e1
%%if true, replace each element of C_n by (j,2)th element of t_e1
What am I doing wrong in the above code?? Also, is there a better way to do get the required output (not using loops)?
Youssef Khmou 2018년 1월 26일
편집: Walter Roberson 2018년 1월 26일
By computing the difference between the two matrices A and B, find the indexes of the entries that equal zero and replace the entries of matrix C with the inputs of the indexes:
Domanic 2018년 1월 26일
편집: Domanic 2018년 1월 26일
I think the original code you had was correct, Sumedh. A minimum working example would be helpful, though. Try the following, which computes your loops on one line using logical vectors.
%%Set up example matrices
int = randi([0 3],[96 1]);
M=randi([0 3],[300 96]);
t_e1 = randi([0 3],[300, 2]);
C_n = t_e1(:,2).*(M==t_e1(:,1));