Hi,
 
I am trying to use the head block in GRC to limit the amount of dat written to 
a file. Currently I have a very basic configuration set up in GRC with a file 
source(text data) set to repeat going into the head block going into a throttle 
to control the sampling rate and going into a file sink.
 
For the head block I have played around with the Number of Items and Vector 
Size parameters. I have been able to get it to work with some combinations of 
numbers but they didn't seem to follow any logical pattern. For example if I 
set the head block input to bytes, Num Items to 50, and Vector Size to 1 I 
would have thought I would geta  50 byte output file but the file was blank (0 
bytes). Any idea on what could be causing this?
 
Thanks,
Dave


      
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