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plot.py
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plot.py
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"""Module to help writing and plotting datafiles"""
import subprocess
import os
import logging
size = "960,600"
imagetype = "png"
#imagetype = "eps"
def plotwitherrorbarsnames(basename, data_errors, shifts, autoscale=True, addcomment=None):
""" plots data with errorbars, data_errors must be a dict with the
name given by the key and the values are a tuple with (data,errors)"""
if not os.path.exists(os.path.dirname(basename)):
os.makedirs(os.path.dirname(basename))
writedataerrorsfile(basename, data_errors, shifts, addcomment)
plotfile = open(basename + ".plt", "w")
names = data_errors.keys()
if(autoscale):
maxval = 0.0
for _, data_error in data_errors.iteritems():
maxval = max(max(data_error[0].values()), maxval)
maxrange = maxval + maxval * 0.2
minval = maxval
for _, data_error in data_errors.iteritems():
minval = min(min(data_error[0].values()), maxval)
minrange = minval - minval * 0.2
else:
maxrange = 2.0
minrange = 0.0
plotfile.write("set yrange[0:%f] \n" % maxrange)
#plotfile.write("set yrange[%f:%f] \n" % (minrange, maxrange))
plotfile.write("set xrange[{}:{}] \n".format(min(shifts), max(shifts)))
if imagetype is "eps":
plotfile.write("set terminal postscript eps color \n")
else:
plotfile.write("set terminal png size %s \n" % size)
plotfile.write("set ylabel \"%s\" \n" % basename)
plotfile.write("set output \"%s.%s\" \n" % (basename, imagetype))
plotfile.write("set style line 1 lt 1 lc 1 pt 9 ps 2 lw 2 \n")
plotfile.write("set style line 2 lt 1 lc 3 pt 7 ps 2 lw 2 \n")
for index, name in enumerate(names):
plotfile.write("%s" % "plot" if index is 0 else ", ")
plotfile.write(" \"%s.out\" using 1:%d:%d with "
"yerrorbars linestyle %d title \"%s\" "
% (basename, index * 2 + 2, index * 2 + 3, index + 1, name))
plotfile.write("\n")
# subprocess.check_call(["gnuplot ", " %s.plt" % basename])
# plotfile.flush()
plotfile.close()
# subprocess.call(["sync"])
returncode = subprocess.call(["gnuplot", basename + ".plt"])
if returncode:
logging.error("gnuplot failed to plot" + basename + ".plt")
else:
logging.info("plotted " + basename + ".plt" + " successfully")
def writedataerrorsfile(basename, data_errors, shifts, addcomment=None):
"""Write a data file so it may be plotted"""
writefile = open(basename + ".out", "w")
names = data_errors.keys()
writefile.write("# time \t \"%s \" \n" % "\t".join(names))
if addcomment:
writefile.write("#{}".format(addcomment))
for shift in sorted(shifts):
writefile.write(str(shift))
for _, values in data_errors.iteritems():
writefile.write(",\t")
data, errors = values
writefile.write(" {0}".format(float(data[shift]), "7.3g"))
writefile.write(",\t")
writefile.write(" {0}".format(errors[shift], "7.3g"))
writefile.write("\n")
writefile.flush()
writefile.close()
logging.info("wrote " + basename + ".out ")
def writedatafile(basename, data, indexes):
"""Write a data file so it may be plotted"""
writefile = open(basename + ".out", "w")
names = data.keys()
writefile.write("# time \t \"%s \" \n" % "\t".join(names))
for index in indexes:
writefile.write(str(index))
for _, values in data.iteritems():
writefile.write(",\t")
writefile.write(" {0}".format(values[index], "7.3g"))
writefile.write("\n")
writefile.flush()
writefile.close()
logging.info("wrote " + basename + ".out ")
def plotwithnames(basename, datas, shifts):
""" plots data with errorbars, datas must be a dict with the
name given by the key and the values are a tuple with (data, errors)"""
writedatafile(basename, datas, shifts)
plotfile = open(basename + ".plt", "w")
names = datas.keys()
maxval = 0.0
for _, data in datas.iteritems():
maxval = max(max(data), maxval)
maxrange = maxval + maxval * 0.1
minval = maxval
for _, data in datas.iteritems():
minval = min(min(data), minval)
minrange = minval - minval * 0.1
# plotfile.write("set yrange[0:%f] \n" % maxrange)
plotfile.write("set yrange[%f:%f] \n" % (minrange, maxrange))
plotfile.write("set xrange[0:%d] \n" % len(shifts))
plotfile.write("set nokey\n")
if imagetype is "eps":
plotfile.write("set terminal postscript eps color \n")
else:
plotfile.write("set terminal png \n")
plotfile.write("set ylabel \"%s\" \n" % basename)
plotfile.write("set output \"%s.%s\" \n" % (basename, imagetype))
plotfile.write("set style line 1 lt 1 lc 1 pt 9 ps 2 lw 2 \n")
plotfile.write("set style line 2 lt 1 lc 3 pt 7 ps 2 lw 2 \n")
for index, name in enumerate(names):
plotfile.write("%s" % "plot" if index is 0 else ", ")
plotfile.write(" \"%s.out\" using 1:%d with"
"linespoints linestyle %d title \"%s\" "
% (basename, index + 2, index + 1, name))
plotfile.write("\n")
# subprocess.check_call(["gnuplot ", " %s.plt" % basename])
# plotfile.flush()
plotfile.close()
# subprocess.call(["sync"])
returncode = subprocess.call(["gnuplot", basename + ".plt"])
if returncode:
logging.error("gnuplot failed to plot" + basename + ".plt")
else:
logging.info("plotted " + basename + ".plt" + " successfully")