how to plot data associated with a certain value?

Hey guys i have an observation file for a Navigation data and i have different PRN numbers that i need to plot. for example i have PRN (6,7,2,5,3,6,1,10,29), but the data is logged every second and the columns assosiated with the PRNs is not uniformed or sorted. my question is how can i group all the data lets say for PRN 6 and plot data only assoisated with PRN 6? my matrix is 2209 x 25

thank you

[KSSV]

What is size of PRN?

[boutros baqain]

so the matrix is 2209 x 25 the PRN is in the second column. so PRN 6 have 100 rows but they are scattered in coulmn 2. so i want to collect the data that is assosiated with "6" and plot it.

Thank you Very much!

Answer 1

[KSSV]

If A is 2209X25 matrix with PRN as second column.

PRN = A(:,2) ;  % Pick second column 
idx = PRN==6 ;    %Get indices of 6 in PRN 
iwant = A(idx,:)

[boutros baqain]

thank you very much!

[KSSV]

Thanks is accepting the answer.....:)