Re: [Matplotlib-users] How to draw a region of interest

[Daniel K. <kor...@re...>]

Hey guys:

Charlie I did not find your lasso example so I cooked up mine, I attach it.
Can you give me the file name that contains the new Lasso widget for  
"doodling" ?

This is just the start of the lasso or "region of interest" widget I 
still have to :
    - fill the region with a color
    - make it work with layers
    - add methods that return the pixel region or the contour coordinates
    - make a nice class

If anybody has made such a widget I would love to see the code, I hate 
reinventing the wheel.

If there is not such an example such as the lasso tool, can my example 
be added to the examples ?
What is the process ?

Anyway, I can't believe there is not such a widget, I thought there must 
be some people that use matplotlib for Digital Image Processing ?
Isn't there ?

Any critique on my code would be appreciated, I have never programed 
with matplotlib ...


                                                                   Daniel.




Charlie Moad wrote:
> On 8/4/06, Daniel Kornhauser <kor...@re...> wrote:
>> Hi:
>>
>> Just stared playing with matplotlib, I want to draw a polygon on top of
>> an image to select a region of interest in the image.
>> Does anybody have any example or advice on how to interactively draw a
>> polygon with the mouse by placing it's vertices's one click at a time ?
>> Another case that I have would be just to fill a region with a thick
>> line, searched for a "doodle example" or a "paint example" but could not
>> find them, any advice would be appreciated too.
>
> Look in at the widget examples.  There is a new Lasso widget for
> "doodling" and a RectangleSelector.
>
> - Charlie