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Full Discussion: Get the substring
Top Forums Shell Programming and Scripting Get the substring Post 302451272 by zaxxon on Monday 6th of September 2010 08:00:20 AM
Old 09-06-2010
If there is only this constellation, ie. not more numbers at other positions and not other characters than alphanumerics, you can just delete all letters for example:
Code:
$> echo 'u8wos'| tr -d "[a-z]"
8

 

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GR_PLOT_CONST(1)						   User Commands						  GR_PLOT_CONST(1)

NAME
gr_plot_const - constellation plot of I&Q data using GNU Radio SYNOPSIS
gr_plot_const: [options] input_filename DESCRIPTION
Takes a GNU Radio complex binary file and displays the I&Q data versus time and the constellation plot (I vs. Q). You can set the block size to specify how many points to read in at a time and the start position in the file. By default, the system assumes a sample rate of 1, so in time, each sample is plotted versus the sample number. To set a true time axis, set the sample rate (-R or --sample-rate) to the sam- ple rate used when capturing the samples. OPTIONS
-h, --help show this help message and exit -B BLOCK, --block=BLOCK Specify the block size [default=1000] -s START, --start=START Specify where to start in the file [default=0] -R SAMPLE_RATE, --sample-rate=SAMPLE_RATE Set the sampler rate of the data [default=1.0] SEE ALSO
gr_plot_char(1) gr_plot_const(1) gr_plot_fft_c(1) gr_plot_fft_f(1) gr_plot_fft.py(1) gr_plot_float(1) gr_plot_int(1) gr_plot_iq(1) gr_plot_psd_c(1) gr_plot_psd_f(1) gr_plot_qt(1) gr_plot_short(1) gr_plot_const 3.5 December 2011 GR_PLOT_CONST(1)
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