Thanks for the pointer. The matplotlib.widget.Cursor works much better 
for displaying crosshairs. ( due to blitting? )

I still haven't found a tool yet for drawing a polygon. The 
lasso_demo.py doesn't run on my system. Well, it runs, displays a 
scatter of points, but I'm not sure what is it supposed to do next.

Thanks,
Venkat.
PS: Sorry for personal post, I meant to post to the list but forgot to 
'reply all'


Darren Dale wrote:
> On Friday 07 December 2007 7:19:04 am José Gómez-Dans wrote:
>   
>> Hi,
>>
>> On Thursday 06 December 2007 19:39:59 Venkat Ramanan wrote:
>>     
>>> I'm looking for something analogous to Matlab's ginput() and roipoly().
>>>       
>> I'm no expert on this, but have a look at the lasso_demo.py example, which
>> shows something akin to roipoly(), and pick_event_demo.py and
>> pick_even_demo2.py, which show something like ginput() (although I think no
>> cross hairs :D).
>>     
>
> Check out cursor_demo.py and matplotlib.widgets.Cursor for cross hairs.
>
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-- 
Venkat Ramanan,
Research Associate,
Imaging Research,
Sunnybrook Health Sciences Centre,
2075 Bayview Ave,
Toronto-M4N3M5
Ontario, Canada


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