[R-sig-Geo] wiki, 2 weeks later

2008-07-22 Thread David Hugh-Jones
-data:when_to_use http://wiki.r-project.org/rwiki/doku.php?id=tips:stats-spatial:kriging and see if you can replace the blank spaces with something useful Cheers David Hugh-Jones PhD Candidate Essex University Department of Government http://davidhughjones.googlepages.com

Re: [R-sig-Geo] Impact of ArcGIS 8.3 beta's new spatial statistical functions in its Spatial Analyst Extension

2008-07-03 Thread David Hugh-Jones
Maybe this would be an appropriate time to mention http://wiki.r-project.org/rwiki/doku.php?id=tips:spatial-data:when_to_use How would list members answer this question? David Hugh-Jones PhD Candidate Essex University Department of Government http://davidhughjones.googlepages.com 2008/7/3

Re: [R-sig-Geo] merging sp objects

2008-07-02 Thread David Hugh-Jones
The spRbind methods also complain about non-unique IDs. Is there any other difference between them and rbind? David Hugh-Jones PhD Candidate Essex University Department of Government http://davidhughjones.googlepages.com 2008/7/1 Roger Bivand <[EMAIL PROTECTED]>: > On Tue, 1 Jul 20

[R-sig-Geo] merging sp objects

2008-07-01 Thread David Hugh-Jones
created. Is there a simple way to give new IDs to these objects, and to know how many I have to give? David Hugh-Jones PhD Candidate Essex University Department of Government http://davidhughjones.googlepages.com ___ R-sig-Geo mailing list R-sig-Geo

Re: [R-sig-Geo] API documentation?

2008-07-01 Thread David Hugh-Jones
Yes, and a list of links to external tools would be great also. Work so far is at http://wiki.r-project.org/rwiki/doku.php?id=tips:spatial-data . It's very incomplete so please feel free to improve! David Hugh-Jones PhD Candidate Essex University Department of Government

[R-sig-Geo] API documentation?

2008-07-01 Thread David Hugh-Jones
e who know a lot can provide answers, and if (like me) you know barely anything, then you'll know what questions need answering. David Hugh-Jones PhD Candidate Essex University Department of Government http://davidhughjones.googlepages.com 2008/7/1 Roger Bivand <[EMAIL PROTECTED]>:

Re: [R-sig-Geo] API documentation?

2008-07-01 Thread David Hugh-Jones
Roger Thanks for that tip. As it happens, what I am doing is quick and dirty enough that it doesn't matter, but it could have bitten me fairly badly. David Hugh-Jones PhD Candidate Essex University Department of Government http://davidhughjones.googlepages.com 2008/7/1 Roger Bivand &l

Re: [R-sig-Geo] API documentation?

2008-06-30 Thread David Hugh-Jones
r to get at the actual raw data, and this is so complicated and confusing that it would be easier just to work with the raw data. OK, I'll stop venting. If there's anything I could do to improve this situation, I would gladly try. David Hugh-Jones PhD Candidate Essex University Departmen

[R-sig-Geo] API documentation?

2008-06-30 Thread David Hugh-Jones
ta by hand, so now I am doing: coords <- [EMAIL PROTECTED]@[EMAIL PROTECTED] 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

[R-sig-Geo] thinlines equivalent?

2008-06-30 Thread David Hugh-Jones
e 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-

Re: [R-sig-Geo] newbie sp question

2007-06-16 Thread David Hugh-Jones
e the minimum", still work? I can't see why not but my intuition is not clear. Cheers David On 16/06/07, Roger Bivand <[EMAIL PROTECTED]> wrote: > On Fri, 15 Jun 2007, David Hugh-Jones wrote: > > > Hi R-spatialists, > > > > I'm working with a big list of

[R-sig-Geo] newbie sp question

2007-06-15 Thread David Hugh-Jones
Hi R-spatialists, I'm working with a big list of polygons (imported into R with package sp as a SpatialPolygonDataFrame, and I am trying to calculate minimum distances between each pair of polygons. For this, I need to get the lines for each polygons. At the moment I can't seem to find a way to do