[R-sig-Geo] API documentation?

[David Hugh-Jones]

Thanks David for his comment about dp.

Quick question: is there any reasonably comprehensible API
documentation for the "sp" package? I have just spent about an hour
trying to get a list of points from a SpatialPolygons object. I
eventually just printed everything out and found the data by hand, so
now I am doing:

coords <- myobject at polygons[[1]]@Polygons[[1]]@coords

but I don't assume that is right. Surely there must be some simple way
to get a list of x and y coords out of any object?

in frustration,
David Hugh-Jones
PhD Candidate
Essex University Department of Government
http://davidhughjones.googlepages.com


2008/6/30 David PINAUD <pinaud at cebc.cnrs.fr>:
> maybe you can try the function dp() in the package "shapefiles", which is an
> implementation of the Douglas-Peucker polyLine simplification algorithm.
> Hope it helps
> David
>
> David Hugh-Jones a écrit :
>>
>> Hi all
>>
>> I have a big dataset of points and am doing stuff on them that takes a
>> lot of time. To speed it up, I would like to use "thinlines" from
>> RArcinfo, which basically makes the maps "rougher" by throwing away
>> points. Is there an equivalent function for SpatialPolygon type
>> objects? (I assume that there's no way to convert _to_ Arcinfo, though
>> I know it's possible to read from it).
>>
>> Cheers
>>
>> David Hugh-Jones
>> PhD Candidate
>> Essex University Department of Government
>> http://davidhughjones.googlepages.com
>>
>> _______________________________________________
>> R-sig-Geo mailing list
>> R-sig-Geo at stat.math.ethz.ch
>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>
>>
>>
>>
>
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