From 89d7fefa50268eb3ea5aa487c398a9e963b4c50d Mon Sep 17 00:00:00 2001
From: Johannes Stoelp <johannes.stoelp@gmail.com>
Date: Wed, 31 Jan 2024 23:29:17 +0100
Subject: gnuplot: initial notes

---
 src/tools/gnuplot.md | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/tools/gnuplot.md

(limited to 'src/tools/gnuplot.md')

diff --git a/src/tools/gnuplot.md b/src/tools/gnuplot.md
new file mode 100644
index 0000000..0a2f50f
--- /dev/null
+++ b/src/tools/gnuplot.md
@@ -0,0 +1,68 @@
+# gnuplot (1)
+
+```
+# Launch interactive shell.
+gnuplot
+
+# Launch interactive shell.
+gnuplot [opt]
+  opt:
+    -p ................ persist plot window
+    -c <file> ......... run script file
+    -e "<cmd1>; .." ... run cmd(s)
+```
+
+## Frequently used configuration
+```sh
+# Plot title.
+set title "the plot"
+
+# Labels.
+set xlabel "abc"
+set ylabel "def"
+
+# Output format, 'help set term' for all output formats.
+set term svg
+# Output file.
+set output "out.svg"
+
+# Make axis logarithmic to given base.
+set logscale x 2
+
+# Change separator, default is whitespace.
+set datafile separator ","
+```
+
+## Plot
+```sh
+# With specific style (eg lines, linespoint, boxes, steps, impulses, ..).
+plot "<data_file>" with <plot_style>
+
+> cat data.txt
+1 1 3
+2 2 2
+3 3 1
+4 2 2
+
+# Plot specific column.
+plot "data.txt" using 1:2, "data.txt" using 1:3
+# Equivalent using the special file "", which re-uses the previous input file.
+plot "data.txt" using 1:2, "" using 1:3
+
+# Plot piped data.
+plot "< head -n2 data.txt"
+
+# Plot with alternate title.
+plot "data.txt" title "moose"
+```
+
+## Example: multiple data sets in on plot
+```sh
+{{#include gnuplot/mem_lat.plot}}
+```
+
+On Linux x86_64, [`mem_lat.c`](gnuplot/mem_lat.c) provides an example which can
+be run as follows.
+```sh
+{{#include gnuplot/plot.sh:3:9}}
+```
-- 
cgit v1.2.3