Insert vector into vector, Matlab

Question

This code is to cut random values from the vector ch and create new vector a. Then, insert a into ch after delete a selected values from ch

What I should change, to be the result like this:

for example if a = [8; 4; 9], then the result :

ch = 5 8 4 9 6 7

Matlab code:

ch = [4; 5; 6; 7; 8; 9]; for i = 1:3 g = randi(3); a(i) = ch(g); ch(g) = []; end; startIdx = 2; finalIdx = startIdx + size(a,1) - 1; ch(startIdx:finalIdx) = a; disp (ch);

Your code seems to run. I don't understand what it is you want and please forgive me if I am rude, but the language in your question is a bit hard to understand. — rayryeng
– rayryeng, Commented Feb 16, 2016 at 6:28
@shdotcom what is wrong with this code? What is the output you are getting and what is the output that you are expecting? Share these both for the community to understand what you are trying to ask. — usamazf
– usamazf, Commented Feb 16, 2016 at 6:35

R.Falque · Accepted Answer · 2016-02-16 07:09:46Z

2

Try this:

ch = [4; 5; 6; 7; 8; 9]; for i = 1:3 g = randi(3); a(i) = ch(g); ch(g) = []; end; a = a'; % your problem probably come from mixing column / lines startIdx = 2; ch = [ch(1:startIdx); a; ch(startIdx+1:end)]; disp (ch);

edited Feb 16, 2016 at 7:09

answered Feb 16, 2016 at 6:40

R.Falque

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2 Comments

shdotcom Over a year ago

when I run the code I got this output: a= 5 6 4 ch = 7 8 5 6 4 8 9 The second "8" should not be there, the output should be: ch = 7 8 5 6 4 9

shdotcom Over a year ago

I have ganged this: ch(startIdx:end)]; to: ch(startIdx+1:end)]; and its working now. Thank you

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