how to delete matplotlib data between ploting

[Murali]

pylab.clf() or some such thing clears the current canvas.

riklaunim at gmail.com wrote:
> I want to make few plots from CSV files. I have the code below - it
> works  - the first plot is ok, the second one has the first and the
> current data set and so on - I can't delete the plot data between
> plots.
> ##########################################
> # -*- coding: utf-8 -*-
> from pylab import *
> from os import listdir
>
> i = listdir('dane/')
>
> # list folders with CSV files
> for di in i:
> 	# list files in folders
> 	csv = listdir('dane/' + di + '/')
> 	for datafile in csv:
> 		# open each CSV file
> 		file = open('dane/' + di + '/' + datafile, 'r').readlines()
> 		x = []
> 		y = []
> 		# get the data
> 		for row in file:
> 			if row.find(',') != -1:
> 				r = row.split(',')
> 				if len(r[0]) > 0 and len(r[1]) > 0:
> 					x.append(float(r[0]))
> 					y.append(float(r[1]))
> 		xlabel('czas')
> 		ylabel('Moc')
> 		title(di.replace('.', ' '))
> 		#plot
> 		plot(x, y)
> 		savefig('dane/' + di + '/' + datafile + '.png')
>                 del x
> 		del y
> 		del file