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I need help with graphs in python (2.7.3.1)

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  I need help with graphs in python (2.7.3.1) hevymetl07@gmail.com - 2012-12-18 03:29 -0800
    Re: I need help with graphs in python (2.7.3.1) Thomas Bach <thbach@students.uni-mainz.de> - 2012-12-18 13:20 +0100
    Re: I need help with graphs in python (2.7.3.1) Terry Reedy <tjreedy@udel.edu> - 2012-12-18 11:43 -0500
    Re: I need help with graphs in python (2.7.3.1) Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-12-18 17:59 -0500

#35049 — I need help with graphs in python (2.7.3.1)

Hi there, I hope that there is someone willing to help me out, I need to generate a graph in Python 2.7.3.1, but I am not that skilled with Python and I am completely stuck :(

I had to make a .CSV file from my Windows system logs (already did that), and the following steps must bw written in the form of a Python 2.7.3.1 script.

These are some steps I need to do first before creating the graph:
- Get the name of a CSV file from an ini file,
- Next, read a line from this CSV file,
- Increase a variable depending on the Log level (information, warning, error, critical),
- Read the next line,
- Then I need to print these results in a Graph.

I really hope that there is someone there to help me out, and many thanks in advance for all your help!

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#35051

Hi,

Most of the tasks you have to do can be achieved quite easily with the
standard library (except the plotting).

On Tue, Dec 18, 2012 at 03:29:49AM -0800, hevymetl07@gmail.com wrote:
> These are some steps I need to do first before creating the graph:
> - Get the name of a CSV file from an ini file,
Have a look at the ConfigParser module[1],

> - Next, read a line from this CSV file,
well, the csv module[2] apparently is a good choice for that,

> - Increase a variable depending on the Log level (information,
> - warning, error, critical),
you maybe want to use collections.counter for that[3]. Anyways, I
think matplotlib can handle the counting for you…

> - Read the next line,
this is just iteration over the csv instance you created with your file

> - Then I need to print these results in a Graph.
I use matplotlib for this purpose, have a look at their gallery[4] to
decide what kind of plot best fits your needs.


I'd recommend to install ipython and start playing around with the
modules I just told you. If you are stuck somewhere read the
documentation properly (it's actually all in there) and come back
again if you cannot come up with a solution.


Hope this helps,
     Thomas Bach.

Footnotes: 
[1]  http://docs.python.org/2/library/configparser.html

[2]  http://docs.python.org/2/library/csv.html

[3]  http://docs.python.org/2/library/collections.html#collections.Counter

[4]  http://matplotlib.org/gallery.html

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#35062

On 12/18/2012 6:29 AM, hevymetl07@gmail.com wrote:
> Hi there, I hope that there is someone willing to help me out, I need
> to generate a graph in Python 2.7.3.1,

There is only 2.7.3, no 2.7.3.1, at least not officially.

> I had to make a .CSV file from my Windows system logs (already did
> that), and the following steps must bw written in the form of a
> Python 2.7.3.1 script.
>
> These are some steps I need to do first before creating the graph: -
> Get the name of a CSV file from an ini file, - Next, read a line from
> this CSV file, - Increase a variable depending on the Log level
> (information, warning, error, critical), - Read the next line, - Then
> I need to print these results in a Graph.

It sounds like your data consist of 4 counts. If so, you can easily make 
a simple bar plot with characters

Log level  Number  Plot (x = 10)
---------- ------  -----------------------------------------------------
infomation    386  xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
warning        97  xxxxxxxxxx
error           5  x
critical       23  xxx

The main problem is to compute the scaling factor from the data.
You also have to decide on the rounding (I rounded up).

-- 
Terry Jan Reedy

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#35080

On Tue, 18 Dec 2012 13:20:25 +0100, Thomas Bach
<thbach@students.uni-mainz.de> declaimed the following in
gmane.comp.python.general:

> Hi,
> 
> Most of the tasks you have to do can be achieved quite easily with the
> standard library (except the plotting).
>
	Since it sounds like the output is going to be a bar-chart, even
that could be done with the standard library...  Based on the counts,
set the highest count to map to, say 60 (characters), scale the other
counts proportionately, then generate a display of (use fixed pitch)

info  | ********************
warn  | *****************************************
error | *******
crit  | **************
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
        wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

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