[mapserver-dev] Request for review/comments on RFC 85 (Contour Layer Rendering)

Alan Boudreault aboudreault at mapgears.com
Tue Mar 26 05:21:48 PDT 2013


Brent, yes, that's what I mean in my first point.. but typo. * the 
connectiontype use will be kept*... until we define another way for 
hybrid layers.

Thanks
Alan

On 13-03-25 10:07 PM, Brent Fraser wrote:
> So we're sticking with the "CONNECTIONTYPE CONTOUR"?
>
> Best Regards,
> Brent Fraser
>
> On 3/25/2013 1:22 PM, Alan Boudreault wrote:
>> Dev,
>>
>> I would like to do the inclusion this week. A few comments about the
>> current implementation:
>>
>> - For now, I think the contourlayer use will be kept, we will need to
>> think more about hybrid layers for mapserver 6.4.
>> - Tileindex are not supported (yet)
>> - Postgis raster are not supported (yet)
>>
>> http://mapserver.org/trunk/development/rfc/ms-rfc-85.html
>>
>> I'll do the call for vote tomorrow morning if there's no objection.
>>
>> Alan
>>
>> On 12-09-21 03:22 AM, Havard Tveite wrote:
>>> I am not sure if contour generation should be a job for Mapserver,
>>> but if we decide to implement it, I think there is a need for
>>> processing directives for "smoothing" / generalisation.
>>> It should be possible to specify the level of "smoothing" for the
>>> DEM as well as for the resulting contours.
>>> Smoothing levels could be specified as the maximum deviation
>>> allowed from the "original".
>>> Contour "smoothing" / generalisation needs to pay attention to
>>> neighbouring contours / topology, so that contours don't cross
>>> after smoothing.
>>>
>>> Possible processing directives for a DEM tolerance of 25 units
>>> (xyz) and contour tolerance of 10 units (xy):
>>> PROCESSING "DEM_TOLERANCE"=25"
>>> PROCESSING "CONTOUR_TOLERANCE=10"
>>> They could be made scale dependent in the way that is suggested
>>> in the RFC.
>>> "TOLERANCE" might not be the best word - "GENERALIZATION"
>>> is also be a possibility.
>>>
>>> It would also be good to choose an approach that will not
>>> make it impossible to use a point layer (xyz or xy+height
>>> attribute) as a data source.
>>>
>>> Håvard
>>>
>>> On 9/20/2012 5:40 PM, Alan Boudreault wrote:
>>>> Hi devs,
>>>>
>>>> I'd like to request some review on a pending RFC regarding support for
>>>> contour layer rendering.
>>>>
>>>> Please see
>>>> https://raw.github.com/mapserver/docs/master/en/development/rfc/ms-rfc-85.txt
>>>>
>>>>
>>>>
>>>> The official rfc page should be updated in about a hour.
>>>>
>>>> http://mapserver.org/trunk/development/rfc/ms-rfc-85.html.
>>>>
>>>> Thanks,
>>>> Alan
>>> _______________________________________________
>>> mapserver-dev mailing list
>>> mapserver-dev at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapserver-dev
>>
>>
>
>


-- 
Alan Boudreault
http://www.mapgears.com/


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