Re: [Matplotlib-users] TclError Couldn't Connect to display ":0.0"

[rlp_GMC <rp...@re...>]

Here is some additional  information regarding this problem

OS -- Linux 2.6.22-16-generic #1 SMP Mon Jan 26 00:07:52 GMT 2009 i686
GNU/Linux

Moved matplotlibrc to  "os.environ['HOME'] =  '/tmp/matlibconfig'" because
of write permission problems with apache child processes. 

No customizations to matplotlibrc

Ubuntu Gutsy

Python-matplotlib     	0.90.1-2ubuntu1
Python-matplotlib-data 	0.90.1-2ubuntu1
Python-matplotlib-doc 	0.90.1-2ubuntu1


Code 
# This code is called by another python script
# and I am not even using the parameters that 
# are passed
# Code works from python idle

import sys, math
import matplotlib_config_path # this sets configpath as described above

import matplotlib 
matplotlib.use('Agg') # use non gui backend

from matplotlib import pylab as plt
import numpy as np
import os,sys 

def VT(batt_v, batt_temp0, batt_temp1, batt_ts, plotfile, dur):  

    t =[]  
    
    for x in batt_ts:    # time axis to 0 based
        t.append((x - batt_ts[0])/divsor[dur]) 

    fig = plt.figure()
    ax1 = fig.add_subplot(111)   # subplot 1 col x 1 row           

    ax1.plot([1,2,3])
    fig.savefig('test.png')

Error returned is the same


rlp_GMC wrote:
> 
> When I try to save a fig to a file  I get the error 
> 
> TclError Couldn't Connect to display ":0.0"  
> 
> I looked in the Maplotlib users manual  (latest version pg 144-146)  and
> tried the following with no luck. BTW why is the same module named
> differently Linux/Win ?
> 
> import matplotlib
> matplotlib.use('Agg')
> import matplotlib.pylab as plt (linux )   or,  import matplotlib.pyplot as
> plt   (Windows)
> fig = plt.figure()
> ax = fig.add_subplot(111)
> ax.plot([1,2,3])
> fig.savefig('test.png')
> 
> Is Matplotlib trying to display a plot to the monitor? 
> 
> rlp
> 


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