Re: [Matplotlib-users] Modifying lasso_demo.py

[Tony Yu <ts...@gm...>]

On Wed, Jul 25, 2012 at 5:11 PM, Scott Henderson <st...@co...> wrote:

> Hello, I'm trying to incorporate some matplotlib widgets into my scripts
> that generate plots. I'm unsure why, but if I wrap the figure creation
> lines in lasso_demo.py with a function the demo does not work. Why?
>
> #Original:
> #------------
> if __name__ == '__main__':
>      data = [Datum(*xy) for xy in randn(100,2)]
>      fig = figure()
>      ax = fig.add_subplot(111, xlim=(0,1), ylim=(0,1), autoscale_on=False)
>      lman = LassoManager(ax, data)
>      show()
>
> #Change:
> #------------
> def run(points):
>      data = [Datum(*xy) for xy in points]
>      fig = figure()
>      ax = fig.add_subplot(111, xlim=(0,1), ylim=(0,1), autoscale_on=False)
>      lman = LassoManager(ax, data)
>      show()
>
> if __name__ == '__main__':
>      points = rand(100, 2)
>      run(points)
>
>
> --
> ---------------
> Scott T. Henderson
> http://www.geo.cornell.edu/eas/gstudent/sth54/contact.html
>

Your changes work fine on my system.

Are you sure the example you wrote above is exactly the same as what you're
running? For example, if I move the `show` out of the function and back
into '__main__', then the lasso stops working (because the lasso manager
gets garbage collected). Otherwise, I can't reproduce the issue. Actually,
what did you mean by "does not work" (e.g., no lasso, error,)?

-Tony