On Tue, 1 Apr 2008, Alan G Isaac wrote:
> PyX is awesome.
Alan,
It really is.
Now, one remaining issue (other than labeling curve on the plots, but
that's for later): I cannot print multiple plots successively. Apparently,
the g.plot() function doesn't clear between plots.
Here's where the plotting is done:
if row[5] == row[16]:
g.plot(curveList,[graph.style.line([style.linewidth.Thin])])
print curveList
g.writePDFfile(curComp + '_' + curSub + '_' + curVar)
plotting = False
curveList = []
and I print curveList at the top of the for loop.
Here's the output (with my explanation interspaced):
$ python testData.py
[]
## We've just entered the for loop for the first plot
[<pyx.graph.data.values instance at 0xb5b44bec>]
[<pyx.graph.data.values instance at 0xb5b44bec>, <pyx.graph.data.values
instance at 0xb5b44c8c>]
## Here are the two curves for the first plot in the data; this is written
## to disk. Then we're back at the top for the second plot in the sample
## data:
[]
[<pyx.graph.data.values instance at 0xb5b44fec>]
[<pyx.graph.data.values instance at 0xb5b44fec>, <pyx.graph.data.values
instance at 0xb5b4708c>]
## These are the three curves for the second plot. The list has been cleared
## and the proper curves accumulated. Then I see this:
/usr/lib/python2.4/site-packages/pyx/graph/graph.py:171: UserWarning: axes
ranges have already been analysed; no further adjustments will be performed
warnings.warn("axes ranges have already been analysed; no further
adjustments will be performed")
Traceback (most recent call last):
File "testData.py", line 123, in ?
testCode()
File "testData.py", line 116, in testCode
g.plot(curveList,[graph.style.line([style.linewidth.Thin])])
File "/usr/lib/python2.4/site-packages/pyx/graph/graph.py", line 173, in
plot
raise RuntimeError("can't plot further data after dostyles() has been
executed")
RuntimeError: can't plot further data after dostyles() has been executed
So, the problem is with the second call to g.plot(). How can I clear/reset
axes, styles, etc. between calls?
Thanks,
Rich
--
Richard B. Shepard, Ph.D. | Integrity Credibility
Applied Ecosystem Services, Inc. | Innovation
<http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863
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