[R-sig-Geo] Trouble with first passage time analysis

2012-10-29 Thread zlong
Hey all, I posted this question a few days ago on a different forum, and was directed here. Hopefully someone will be able to help me out. I've managed to figure out just about everything I need, I'm just left with one unresolved issue. I'm fine up to the point of creating the ltraj object from a

Re: [R-sig-Geo] kriging limits

2012-10-29 Thread marco milella
Dear Rob, thanks for the help. However, my shp file is a SpatialLinesDataFrame, so things not work (blue plot). On the other hand, I tried with an old map of Europe (SpatialPolygonsDataFrame) and it works fine. Do any of you know where to find SpatialPolygonsDataframe .shp file of all world (possi

Re: [R-sig-Geo] RSAGA issues

2012-10-29 Thread Rainer Hurling
On 29.10.2012 16:18 (UTC+2), Ludwig Hilger wrote: > Dear list, > > TY for answering. > The first (Mr. Hurling) and the second (Input grids in the form of GRIDS = > "t_asp_class.sgrd;t_elev_class.sgrd" helped) issue are solved now. > I am still fighting with the resampling grid module and I have n

[R-sig-Geo] Kriging on Ecological data

2012-10-29 Thread Mohammed Rashad
Hi All, I had some species count of a particular area. with the corresponding plot numbers and location info. Anyone have idea on how to do Kiriging(any type) on it Sample data format: Latitute, Longitude, PlotID, SpeciesCount 18.5 32.3 105 100 ... .. Please tell me h

Re: [R-sig-Geo] spatstat crashes R when converting tess to sp objects

2012-10-29 Thread O'Hanlon, Simon J
sorry - forgot to cc to list... Dear Roger, Thank you, very much. With maptools svn revision 239 it does indeed run through my script without crashing now. Many thanks, Simon On Mon, 29 Oct 2012, Roger Bivand wrote: > On Mon, 29 Oct 2012, O'Hanlon, Simon J wrote: > >> Further to this problem

Re: [R-sig-Geo] RSAGA issues

2012-10-29 Thread Ludwig Hilger
Dear list, TY for answering. The first (Mr. Hurling) and the second (Input grids in the form of GRIDS = "t_asp_class.sgrd;t_elev_class.sgrd" helped) issue are solved now. I am still fighting with the resampling grid module and I have not found a solution in the archives and got none on sourceforg

Re: [R-sig-Geo] spatstat crashes R when converting tess to sp objects

2012-10-29 Thread Roger Bivand
On Mon, 29 Oct 2012, Roger Bivand wrote: On Mon, 29 Oct 2012, O'Hanlon, Simon J wrote: Further to this problem, I have experienced some more odd behaviour with the coercion from tess to sp. My real dataset is 3607 points within the observation window. If I try and run this straight away I g

Re: [R-sig-Geo] spatstat crashes R when converting tess to sp objects

2012-10-29 Thread Roger Bivand
On Mon, 29 Oct 2012, O'Hanlon, Simon J wrote: Further to this problem, I have experienced some more odd behaviour with the coercion from tess to sp. My real dataset is 3607 points within the observation window. If I try and run this straight away I get a segfault crash with the error message

Re: [R-sig-Geo] spatstat crashes R when converting tess to sp objects

2012-10-29 Thread O'Hanlon, Simon J
Further to this problem, I have experienced some more odd behaviour with the coercion from tess to sp. My real dataset is 3607 points within the observation window. If I try and run this straight away I get a segfault crash with the error message: *** caught segfault *** address 0x0, cause 'm

Re: [R-sig-Geo] kriging limits

2012-10-29 Thread Rob Robinson
Marco, 'colouring' only the land is relatively easy, kriging over just the land is much harder... To do the former, all you need to to do is plot your kriged map, then plot a 'mask' over the sea area. To create the mask, you need something like the snippet below world<-readShapeSpatial("10m_coast