How to get the row indices

1 view (last 30 days)
Hi,
I have the below array, and I want to get the idices of names starting with PRS.
PRS.BG02K65E5T9
PRS.UG02K145E5T20
Ark.prgrma
YUI_PRS.UG02K145E5T20
PRS.GG02K200E6T20
1. I want to know which row of name start with PRS. (row1,2,5) 2. Count of names starting with PRS. and not start with PRS. (3 &2)
Many thanks in advance,
  2 Comments
Steven Lord
Steven Lord on 13 Apr 2017
How is the data stored? As a char array, as a cell array each element of which is a char vector, as a string array, etc.? And which release of MATLAB are you using?

Sign in to comment.

Accepted Answer

Walter Roberson
Walter Roberson on 13 Apr 2017
Edited: Walter Roberson on 13 Apr 2017
S = { 'PRS.BG02K65E5T9',
'PRS.UG02K145E5T20',
'Ark.prgrma',
'YUI_PRS.UG02K145E5T20',
'PRS.GG02K200E6T20'};
find(strncmp(S,'PRS',3))
  2 Comments
Kanakaiah Jakkula
Kanakaiah Jakkula on 13 Apr 2017
I also want to know the count of of names starting with PRS and not starting with PRS: my output should be [3 2]
Walter Roberson
Walter Roberson on 14 Apr 2017
mask = strncmp(S,'PRS',3);
row_indices = find(mask);
match_count = sum(mask);
nonmatch_count = sum(~mask);

Sign in to comment.

More Answers (0)

Categories

Find more on Introduction to Installation and Licensing in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!