rf-toolbox, rfplot(), plot only at a given frequency?

hi, im using rfplot() to plot my .s2p files. Lets say i have 100 of these .s2p files and i would like to plot the phase or magnitude at a certain frequency only. So basically i have many .s2p files and i would like to take only the data at a certain frequency out of every single s2p file and show the result in one plot.

I would like to see if at a certain frequency the magnitude stays the same/constant for a given period of time.

I have no idea how to accomplish this task so i reall appreciate every hint.

Thank you! :)

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

You would need to read every file, extract the portion of the data you need and record it and throw the rest of the information from that file away.

Answer 2

[Miroslav Lach]

Hi,

thank you for your reply!

Would you be so kind and give me an example on how to actually "extract the portion"? Thats the part i can not figure out by myself.

How would i tell matlab to only read a certain line of the .s2p file at a given frequency?

I would really appreciate some help here as im stuck here. Thank you so much! :)

[Walter Roberson]

http://www.mathworks.com/help/rf/basic-operations-with-rf-objects.html