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# Dummy Makefile to create a random dataset for plotting.
#
# Original author:
# Mohammad Akhlaghi <mohammad@akhlaghi.org>
# Contributing author(s):
# Copyright (C) 2018, Your Name.
#
# This Makefile is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This Makefile is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# A copy of the GNU General Public License is available at
# <http://www.gnu.org/licenses/>.
# Dummy dataset
# -------------
#
# We will use AWK's random number generator to generate a random dataset to
# be imported by PGFPlots for a plot in the paper.
dmdir = $(texdir)/delete-me
dm = $(dmdir)/data.txt
$(dmdir): | $(texdir); mkdir $@
$(dm): $(pconfdir)/delete-me-num.mk | $(dmdir)
# When the plotted values are re-made, it is necessary to also
# delete the TiKZ externalized files so the plot is also re-made.
rm -f $(tikzdir)/delete-me.pdf
# Generate the table of random values.
awk 'BEGIN { for (i = 1; i <= $(delete-me-num); i++) \
print i, rand(); }' > $@
# TeX macros
# ----------
#
# This is how we write the necessary parameters in the final PDF.
#
# NOTE: In LaTeX you cannot use any non-alphabetic character in a variable
# name.
$(mtexdir)/delete-me.tex: $(dm)
# Write the number of random values used.
echo "\newcommand{\deletemenum}{$(delete-me-num)}" > $@
# Note that since Make variables start with a `$(', if you want to
# use `$' within the shell (not Make), you have to quote any
# occurance of `$' with another `$'. That is why there are `$$' in
# the AWK command below.
#
# Here, we are first using AWK to find the minimum and maximum
# values, then using it again to read each separately to use in the
# macro definition.
mm=$$(awk 'BEGIN{min=99999; max=-min} \
{if($$2>max) max=$$2; if($$2<min) min=$$2;} \
END{print min, max}' $(dm)); \
v=$$(echo "$$mm" | awk '{printf "%.3f", $$1}'); \
echo "\newcommand{\deletememin}{$$v}" >> $@; \
v=$$(echo "$$mm" | awk '{printf "%.3f", $$2}'); \
echo "\newcommand{\deletememax}{$$v}" >> $@
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