# Contents of Discuss-gnuradio digest

**URL:** <https://www.ruby-forum.com/t/contents-of-discuss-gnuradio-digest/230738>\
**Category:** GNU Radio\
**Created:** [July 2, 2014, 5:14am UTC](https://www.ruby-forum.com/t/contents-of-discuss-gnuradio-digest/230738 "2014-07-02T05:14:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [July 2, 2014, 5:14am UTC](https://www.ruby-forum.com/t/contents-of-discuss-gnuradio-digest/230738/1 "2014-07-02T05:14:34Z")

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Hi~ I use the uhd\_rx\_cfile to get the binary sample data, and I use  
gr\_plot\_psd\_c to draw the grcphic about the ‍binary sample data.‍  
But I don’t know the x or y coordinates, I don’t how to do with it.  
Thanks.

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**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [July 2, 2014, 9:46am UTC](https://www.ruby-forum.com/t/contents-of-discuss-gnuradio-digest/230738/2 "2014-07-02T09:46:12Z")

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Hi ???,  
I couldn’t really tell the subject of this mail; I think it should be  
“plotting data with the gr\_plot\_psd\_c tool”, is that right?  
The axes should be labeled: X in the left is time (calculated from  
f\_sample, which is assumed to be 1Hz if not specified), on the right is  
Hz;  
Y is amplitude (left) and magnitude (right), as you would expect from a  
time domain and PSD representation.

Greetings,  
Marcus