numtools

commit 28866edd3b5db9c04759e3ffa034d698ba2022fd
parent 73826473ebdf93c722546afd28b60b783ae38abf
Author: Anders Damsgaard <anders@adamsgaard.dk>
Date:   Thu, 25 Mar 2021 21:03:42 +0100

add histpdf

Diffstat:
M
Makefile
 | 
8
+++++++-
A
histpdf
 | 
11
+++++++++++
A
histpdf.1
 | 
21
+++++++++++++++++++++

3 files changed, 39 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
@@ -8,7 +8,13 @@ PREFIX = /usr/local
 MANPREFIX = ${PREFIX}/man
 DOCPREFIX = ${PREFIX}/share/doc/${NAME}
 
-SCRIPTS = mean max min sum rangetest
+SCRIPTS = \
+	histpdf\
+	max\
+	mean\
+	min\
+	rangetest\
+	sum
 
 MAN1 = ${SCRIPTS:=.1}
 DOC = \
diff --git a/histpdf b/histpdf
@@ -0,0 +1,11 @@
+#!/bin/sh
+f="$(mktemp)"
+cat > "$f"
+gnuplot -e "set term unknown;\
+            plot '${f}' using 0:1;\
+            set term pdf;\
+            nbins=10;\
+            binwidth=(GPVAL_DATA_Y_MAX - GPVAL_DATA_Y_MIN) / nbins;\
+            bin(x,width)=width * floor(x / width);\
+            plot '${f}' using (bin(\$1, binwidth)):(1.0) smooth freq with boxes title ''"
+rm -f "$f"
diff --git a/histpdf.1 b/histpdf.1
@@ -0,0 +1,21 @@
+.Dd $Mdocdate$
+.Dt HISTPDF 1
+.Os
+.Sh NAME
+.Nm histpdf
+.Nd plots a histogram of values in the first column
+.Sh SYNOPSIS
+.Nm
+.Sh DESCRIPTION
+The
+.Nm
+outputs a PDF plot, so make sure to redirect the standard output to
+another program or to a file.
+.Sh SEE ALSO
+.Xr gnuplot 1 ,
+.Xr max 1 ,
+.Xr mean 1 ,
+.Xr min 1 ,
+.Xr sum 1
+.Sh AUTHORS
+.An Anders Damsgaard Aq Mt anders@adamsgaard.dk