How to get row index of certain values in a vector

I am looking for a way to extract the row index of certain values from a vector.

I tried with

[ ~ , index ] = max(obj.GanttM(:,2)==i);

This only gives me one index but the number i appears several times. How can I extract all row indeces with one command?

Thank you.

Answer 1

[Image Analyst]

Use find() instead:

rows = find(obj.GanttM(:,2)==i);

[Image Analyst]

Start a new question. Attach your data and code there, after you read this.

Answer 2

[Amit]

index = find(obj.GanttM(:,2)==i)

this will do it!