Ploting and labeling data with variables matplotlib

Question

I've been collecting data from experiments and dumping them into .txt files and I decided to try and write a quick script to plot them with matplotlib. The plotting works fine, but I do not know how to label the plot based on the file name.

from numpy import *
from pylab import *
from matplotlib import rc
import sys
import os

rc('text',usetex=True)
rc('font',**{'family':'serif','serif':['Computer Modern']})


os.chdir(".")
for files in os.listdir("."):
    if files.endswith(".txt"):
        f = open(files,'r')
        temp = []
        for l in f:
            temp.append(float(l))
        plot(temp,labels=files)
        hold(True)


legend(loc='lower left')
hold(False)

# Save the figure in a separate file
savefig('test.png')

# Draw the plot to the screen
show()

The problem seems to be with plot(temp,lables=files). If I put lables=files I get the error TypeError: There is no line property "labels". If I try and put labels='files', all the plots are labelled files which is useless. Does anyone know how to assign a lable to a plot based on a variable?

Do not use syntax from foo import *. Just do not.

alko
– alko

2013-11-08 21:37:27 +00:00
Commented Nov 8, 2013 at 21:37 — alko
– alko, Commented Nov 8, 2013 at 21:37

Molly · Accepted Answer · 2013-11-08 21:17:40Z

2

You want to use label, not lables or labels.

plot(temp,label = files)

answered Nov 8, 2013 at 21:17

Molly

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2 Comments

Dom Over a year ago

I just tried that and got the error RuntimeError: LaTeX was not able to process the following string: 'Reference_9.txt'

jeremiahbuddha Over a year ago

You can just add a string replace line in your for loop, e.g. plot( temp, labels = files.replace('_', '-') )

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