Mike, John, Because path simplification does not work with anything but a continuous line, it is turned off if there are any nans in the path. The result is that if one does this:
import numpy as np xx = np.arange(200000) yy = np.random.rand(200000) #plot(xx, yy) yy[1000] = np.nan plot(xx, yy) the plot fails with an incomplete rendering and general unresponsiveness; apparently some mysterious agg limit is quietly exceeded. With or without the nan, this test case also shows the bizarre slowness of add_line that I asked about in a message yesterday, and that has me completely baffled. Both of these are major problems for real-world use. Do you have any thoughts on timing and strategy for solving this problem? A few weeks ago, when the problem with nans and path simplification turned up, I tried to figure out what was going on and how to fix it, but I did not get very far. I could try again, but as you know I don't get along well with C++. I am also wondering whether more than straightforward path simplification with nan/moveto might be needed. Suppose there is a nightmarish time series with every third point being bad, so it is essentially a sequence of 2-point line segments. The simplest form of path simplification fix might be to reset the calculation whenever a moveto is encountered, but this would yield no simplification in this case. I assume Agg would still choke. Is there a need for some sort of automatic chunking of the rendering operation in addition to path simplification? Thanks. Eric ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
