numtools

perform numerical operations on vectors and matrices in unix pipes
git clone git://src.adamsgaard.dk/numtools # fast
git clone https://src.adamsgaard.dk/numtools.git # slow
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histpdf (374B)

      1 #!/bin/sh
      2 f="$(mktemp)"
      3 cat > "$f"
      4 gnuplot -e "set term unknown;\
      5             plot '${f}' using 0:1;\
      6             set term pdf;\
      7             nbins=10;\
      8             binwidth=(GPVAL_DATA_Y_MAX - GPVAL_DATA_Y_MIN) / nbins;\
      9             bin(x,width)=width * floor(x / width);\
     10             plot '${f}' using (bin(\$1, binwidth)):(1.0) smooth freq with boxes title ''"
     11 rm -f "$f"