frey

Since I couldn’t find this in an easy-to-use format anywhere else, here’s how you use gnuplot to plot a list of numbers sent in with stdin:

(echo plot \"-\" with lines; cat numbers.txt) | gnuplot

numbers.txt is a list of numbers, with or without terminating semicolons. Scientific notation is ok.

(30 minutes later) … and, here’s how to write a pdf graph of each text file in the current directory:

ls *.txt | perl -e 'while(<stdin>) { chomp; system "(echo set term pdf; echo set yrange [-1:1]; echo plot \\\"-\\\" with lines; cat $_ ) | gnuplot > $_.pdf"; }

(and so I don’t lose it, here’s how to generate a whole bunch of testunits:

perl -e 'for ( $i=1; $i<60; $i+=5 ) { for ( $j=$i+1; $j<150; $j*=1.5 ) { print "#X obj ".($i*40)." ".(int($j))." testunit $i-".(int($j))." $i ".(int($j))." senergy;\n"; } } ' > 1.actions/testunits.pd.txt

)

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