matplotlib-users

[Matplotlib-users] path contains_point IndexError: Unexpected SeqBase<T> length

[Gustavo G. <gus...@gm...>]

I think I'm experiencing a bug.

Here is a minimum example:

import matplotlib.patches as mpatches
path = mpatches.Rectangle((0,0),width=1,height=1).get_path()
print path.contains_point(point=(.5,.5))

it raises an IndexError: Unexpected SeqBase<T> length.

I think this is a problem in the contains_point method which calls a C
function point_in_path inside of matplotlib._path

Thanks!
Gustavo

Re: [Matplotlib-users] path contains_point IndexError: Unexpected SeqBase<T> length

[Gustavo G. <gus...@gm...>]

The problem is that the function in _path.cpp expects a path radius
argument, r.

Here is the signature:
point_in_path(double x, double y, double r, PathIterator& path,
              const agg::trans_affine& trans)

but the invocation in python looks like this:

point_in_path(point[0], point[1], self, transform)


On Sat, Jun 9, 2012 at 9:27 PM, Gustavo Goretkin <gus...@gm...
> wrote:

> I think I'm experiencing a bug.
>
> Here is a minimum example:
>
> import matplotlib.patches as mpatches
> path = mpatches.Rectangle((0,0),width=1,height=1).get_path()
> print path.contains_point(point=(.5,.5))
>
> it raises an IndexError: Unexpected SeqBase<T> length.
>
> I think this is a problem in the contains_point method which calls a C
> function point_in_path inside of matplotlib._path
>
> Thanks!
> Gustavo
>

Re: [Matplotlib-users] path contains_point IndexError: Unexpected SeqBase<T> length

[Phil E. <pel...@gm...>]

I can't reproduce this on version >= 1.1.0. What version of matplotlib
are you using?


On 11 June 2012 17:23, Gustavo Goretkin <gus...@gm...> wrote:
> The problem is that the function in _path.cpp expects a path radius
> argument, r.
>
> Here is the signature:
> point_in_path(double x, double y, double r, PathIterator& path,
>               const agg::trans_affine& trans)
>
> but the invocation in python looks like this:
>
> point_in_path(point[0], point[1], self, transform)
>
>
>
> On Sat, Jun 9, 2012 at 9:27 PM, Gustavo Goretkin
> <gus...@gm...> wrote:
>>
>> I think I'm experiencing a bug.
>>
>> Here is a minimum example:
>>
>> import matplotlib.patches as mpatches
>> path = mpatches.Rectangle((0,0),width=1,height=1).get_path()
>> print path.contains_point(point=(.5,.5))
>>
>> it raises an IndexError: Unexpected SeqBase<T> length.
>>
>> I think this is a problem in the contains_point method which calls a C
>> function point_in_path inside of matplotlib._path
>>
>> Thanks!
>> Gustavo
>
>
>
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Re: [Matplotlib-users] path contains_point IndexError: Unexpected SeqBase<T> length

[Benjamin R. <ben...@ou...>]

On Mon, Jun 11, 2012 at 12:23 PM, Gustavo Goretkin <
gus...@gm...> wrote:

> The problem is that the function in _path.cpp expects a path radius
> argument, r.
>
> Here is the signature:
> point_in_path(double x, double y, double r, PathIterator& path,
>               const agg::trans_affine& trans)
>
> but the invocation in python looks like this:
>
> point_in_path(point[0], point[1], self, transform)
>
>
Unless someone undid the fix, this was already fixed in master, I believe.
The current python invocation is:

 result = point_in_path(point[0], point[1], radius, self, transform)

Ben Root