[GRASS-dev] [GRASS-user] generalize polygons including holes

[Moritz Lennert]

[taking this over to grass-dev]

On 05/02/15 18:23, Markus Metz wrote:
> On Thu, Feb 5, 2015 at 4:56 PM, Moritz Lennert
> <mlennert at club.worldonline.be> wrote:
>> On 05/02/15 14:49, Markus Metz wrote:
>>>
>>> On Thu, Feb 5, 2015 at 11:50 AM, Moritz Lennert
>>> <mlennert at club.worldonline.be> wrote:
>>>>
>>>> On 05/02/15 10:06, Markus Metz wrote:

>>>>> v.generalize does not distinguish between outer and inner rings, it
>>>>> simply goes through all boundaries and generalizes each one.
>>>>
>>>>
>>>>
>>>> And this has always been the case or this is specific to GRASS7 ?
>>>
>>>
>>> This has always been the case.
>>
>>
>> Then why doesn't there seem to be any generalization happening for the hole
>> boundaries of the test dataset with grass64release ?
>
> With the test dataset you provided, GRASS 6.4 does generalize the hole
> boundaries. I do not have the problem vector of Robert, so I can not
> say if the hole boundaries in that vector are generalized or not.

With a make distleaned, svn updated and recompiled grass64relase, using 
the test data and the commands

v.generalize test method=douglas thresh=100 out=test_gen_100 --o
v.generalize test method=douglas thresh=500 out=test_gen_500 --o

I get the attached result (red = 100, orange=500). I don't see any 
generalization in the holes as I do with the same commands in GRASS 7.

Moritz


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