replacing values from one array to another in different sizes

Hi

I am really struggeling with solving this problem.

% I have an array called mBall 15001x4 with only zeroes in fourth column
mBall(1:15001,4) = 0;
-3.42	-24.55	5.19	0
-3.01	-24.59	5.66	0
-2.59	-24.64	6.11	0
-2.19	-24.69	6.53	0
-1.78	-24.73	6.91	0
-1.38	-24.79	7.28	0
-0.98	-24.84	7.63	0
% this is what an exsample of what my mBall looks like 

% I have an array c that consist of 3786x2, below is an exsample of c
% The fist column in c, should be corresponding to the row nr in mBall
c = 
2    1
3    1
4    2
5    3
7    3

% I'm trying to replace the values in fourth column of mBall, with the values in second column of c
% mBall should look like this afterwards

mball =
-3.42	-24.55	5.19    0
-3.01	-24.59	5.66    1
-2.59	-24.64	6.11    1
-2.19	-24.69	6.53    2
-1.78	-24.73	6.91	3
-1.38	-24.79	7.28	0
-0.98	-24.84	7.63	3

Answer 1

[Image Analyst]

Try

rowsToReplace = c(:, 1);
mBall(rowsToReplace, 4) = c(:, 2);

[Morten Jørgensen]

Thank you so much

this works