[Numpy-discussion] ANN: gracePlot.py
Nathaniel Gray
n8gray at caltech.edu
Fri Sep 28 16:41:03 CDT 2001
__________________________________________________________________
Announcing: gracePlot.py v0.5
An interactive, user-friendly python interface to the
Grace plotting package.
__________________________________________________________________
* WHAT IS IT?
gracePlot.py is a high-level interface to the Grace plotting package available
at: http://plasma-gate.weizmann.ac.il/Grace/ The goal of gracePlot is to
offer the user an interactive plotting capability similar to that found in
commercial packages such as Matlab and Mathematica, including GUI support for
modifying plots and a user-friendly, pythonic interactive command-line
interface.
* WHAT FEATURES DOES IT OFFER?
Since this package is in the early stages of development it does not yet
provide high-level command-line access to all of Grace's plotting
functionality. It does, however, offer:
* Line Plots (with or without errorbars)
* Histograms (with or without errorbars)
* Multiple graphs (sets of axes) per plot
* Multiple simultaneous plots (grace sessions)
* Overlaid graphs, using a 'hold' command similar to Matlab's
* Legends, titles, axis labels, and axis limits
* Integration with Numerical Python and Scientific Python's Histogram
object
Note that all advanced features and customizations are available through the
Grace UI, so you can compose rough plots in Python and then polish them up in
Grace.
* HOW DO I USE IT?
Here is an example session that creates a plot with two sets of axes, putting
a line plot in one and a histogram in the other:
Python 2.1.1 (#2, Jul 31 2001, 14:10:42)
[GCC 2.96 20000731 (Linux-Mandrake 8.0 2.96-0.48mdk)] on linux2
Type "copyright", "credits" or "license" for more information.
>>> from gracePlot import gracePlot
>>> p = gracePlot() # A grace session opens
>>> p.plot( [1,2,3,4,5], [10, 4, 2, 4, 10], [1, 0.7, 0.5, 1, 2],
... symbols=1 ) # A plot with errorbars & symbols
>>> p.title('Funding: Ministry of Silly Walks')
>>> p.ylabel('Funding (Pounds\S10\N)')
>>> p.multi(2,1) # Multiple plots: 2 rows, 1 column
>>> p.xlimit(0, 6) # Set limits of x-axis
>>> p.focus(1,0) # Set current graph to row 1, column 0
>>> p.histoPlot( [7, 15, 18, 20, 21], x_min=1,
... dy=[2, 3.5, 4.6, 7.2, 8.8]) # A histogram w/errorbars
>>> p.xlabel('Silliness Index')
>>> p.ylabel('Applications/yr')
>>> p.xlimit(0, 6) # Set limits of x-axis
The result of this session can be found at:
http://www.idyll.org/~n8gray/code/index.html
* WHERE DO I GET IT?
gracePlot is available here:
http://www.idyll.org/~n8gray/code/index.html
___________________________________________________________
Cheers,
-n8
--
Nathaniel Gray
California Institute of Technology
Computation and Neural Systems
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