plotting graph problem

[ajit.nayak]

Dear all

I have downloaded matplot lib for python2.7.2 windows using[(http://matplotlib.org/downloads.html)]Click Here . As per example i tried coding i found pyplot is not highlighted.i have attached test.cv file for which graph has to be plotted

   import csv
        import matplotlib.pyplot as plt
        plt.figure()

        def main():
            pass


        if __name__ == '__main__':
            main()
            file =open("test.csv","r+")
            TIME=[]
            ACT_ANGLE=[]
            DES_ANGLE=[]
            for line in reader:
               TIME.append(line[1])
               print TIME
               ACT_ANGLE.append(line[2])
               DES_ANGLE.append(line[3])

            x=TIME
            z=ACT_ANGLE
            #print x
            y=DES_ANGLE


            plt.plot(x,y)
            plt.xlabel('Time in Sec')
            plt.show()
            plt.savefig("example.png")

error report given below

Traceback (most recent call last):
  File "C:\Documents and Settings\Administrator\My Documents\python code\m2.py", line 2, in <module>

  File "C:\Python27\lib\site-packages\matplotlib\__init__.py", line 125, in <module>
    raise ImportError("matplotlib requires pyparsing")
ImportError: matplotlib requires pyparsing

[Gribouillis]

You could try and install pyparsing with the windows installers in pypi.

[ajit.nayak]

i tried but it didn't worked. Let me know why it doesnot highlight pyplot eventhrough matplot is installed. even i given path from tools

[Gribouillis]

I tried to reproduce the bug in windows XP with python 32 bits installed. I had to install python-dateutil module from Christoph Gohlke's site, then pyparsing as I said in the previous post, but the installer refused to run because I didn't have msvcr71.dll. I got the dll here (download the zip file uncompress and move the dll to the System folder). Once pyparsing was installed, I needed numpy (1.8.0 superpack from sourceforge) and finally the package Six from Gohlke's site. Then the following line succeeded

from matplotlib import pyplot as plt

My advice: install linux mint in a virtualbox and say good bye to issues in python modules installs !

[ajit.nayak]

let me know why i cant access to pyplot even if function defined

[Gribouillis]

If it's still the same error message, it means that your python cannot find the pyparsing module and you must find out why. Try

>>> import pyparsing

in your interpreter. Also try to locate pyparsing.py on your computer.

[ajit.nayak]

in my interpreter also it is not detecting ,,, giving error as below.best way to plot graph using python

import matplotlib.pypasring as plt
Traceback (most recent call last):
  File "<interactive input>", line 1, in <module>
  File "C:\Python27\lib\site-packages\matplotlib\__init__.py", line 125, in <module>
    raise ImportError("matplotlib requires pyparsing")
ImportError: matplotlib requires pyparsing

[Gribouillis]

Did you install pyparsing ?

[ajit.nayak]

yes i installed it . i am sharing some snap shot you can check.

Else let me know links where i can instal newley and make it work.

[Gribouillis]

Where is pyparsing.py on your computer ?
What does python say when you type import pyparsing ?

[ajit.nayak]

error report

>Traceback (most recent call last):
  File "<interactive input>", line 1, in <module>
  File "C:\Python27\lib\site-packages\matplotlib\__init__.py", line 125, in <module>
    raise ImportError("matplotlib requires pyparsing")
ImportError: matplotlib requires pyparsing

[Gribouillis]

I didn't say import matplotlib but import pyparsing

[ajit.nayak]

import pyparsing

it will not give any error

 from matplotlib import pyparsing
Traceback (most recent call last):
  File "<interactive input>", line 1, in <module>
  File "C:\Python27\lib\site-packages\matplotlib\__init__.py", line 129, in <module>
    "matplotlib requires pyparsing >= 1.5.6")
ImportError: matplotlib requires pyparsing >= 1.5.6

[ajit.nayak]

i downloaded pyparsing 2.7 fromhttp://www.lfd.uci.edu/~gohlke/pythonlibs/

[Gribouillis]

There is a developpers discussion here. You may have an old install of matplotlib still on your disk. You may need to remove the folder C:\Python27\lib\site-packages\matplotlib if it exists, as suggested in this thread, and perhaps reinstall matplotlib.