FIFOBuffer.add() calls Bbox.update(), not a method

Development matplotlib-devel
1

Hello.

I was doing a simple test using a FIFOBuffer. I set the dataLim parameter
to the dataLim of a Line2D plot. After adding a value to the FIFO, it
raises an exception. It looks like the FIFO is trying to call
Bbox.update(), but that method does not exist. Other update_*() methods do.
Any ideas?

Here's a snippet:

import matplotlib.pyplot as plt
from matplotlib.mlab import FIFOBuffer as FIFO
f = FIFO(100)
p = plt.plot([0,1,2],[0,1,2])
f.dataLim = p[0].get_axes().dataLim
plt.draw()
f.add(3,3)

Here's the exception:

Traceback (most recent call last):
  File "C:\fifo.py", line 9, in <module>
    f.add(3,3)
  File "C:\Python26\lib\site-packages\matplotlib\mlab.py", line 1103, in add
    self.dataLim.update(xys, -1) #-1 means use the default ignore setting
AttributeError: 'Bbox' object has no attribute 'update'

···

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2

In mpl 0.98 we did a big refactoring of the transformations
infrastructure but this class was not properly poprted. I've fixed it
in the svn release branch so it should be fixed in the next release
(0.99.1)

Thanks for the report,
JDH

···

On Fri, Aug 21, 2009 at 6:24 PM, Ryanitus<ryanitus007@...476...> wrote:

Hello.

I was doing a simple test using a FIFOBuffer. I set the dataLim parameter
to the dataLim of a Line2D plot. After adding a value to the FIFO, it
raises an exception. It looks like the FIFO is trying to call
Bbox.update(), but that method does not exist. Other update_*() methods do.
Any ideas?

3

With regards to the update() function, is it supposed to actually add the
data point to the graph? After making the change and re-running the
program, the plot does not contain the new data point.

Thanks,
Ryan

John Hunter-4 wrote:

···

On Fri, Aug 21, 2009 at 6:24 PM, Ryanitus<ryanitus007@...476...> wrote:

Hello.

I was doing a simple test using a FIFOBuffer. I set the dataLim
parameter
to the dataLim of a Line2D plot. After adding a value to the FIFO, it
raises an exception. It looks like the FIFO is trying to call
Bbox.update(), but that method does not exist. Other update_*() methods
do.
Any ideas?

In mpl 0.98 we did a big refactoring of the transformations
infrastructure but this class was not properly poprted. I've fixed it
in the svn release branch so it should be fixed in the next release
(0.99.1)

Thanks for the report,
JDH

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