Re: [R-sig-Geo] warning in errorsarlm

2016-06-06 Thread Roger Bivand
On Sun, 5 Jun 2016, Pascal Title wrote: Hi, I am trying to fit a simultaneous autoregressive model to some data using the spdep package. In order to identify the appropriate spatial distance to use, I use the correlog function to find the distance at which spatial autocorrelation of the residua

Re: [R-sig-Geo] dissolve tiny polygons to others with unionSpatialPolygons{maptools}

2016-06-06 Thread Roger Bivand
On Mon, 6 Jun 2016, Kumar Mainali wrote: I am trying to use unionSpatialPolygons() of maptools to eliminate sliver in species range. I want to dissolve tiny sliver polygons in a shapefile to bigger polygons as "Eliminate (Data Management)" of ArcMap does. Whereas I can dissolve polygons that hav

[R-sig-Geo] multivariate sequential gaussian cosimulation using gstat in R

2016-06-06 Thread William Savran
Dear All, I am new to gstat and fairly new to applying geostatistical methods, so I have a few questions. I am looking to simulate a set of 3 (out of 4) correlated stochastic fields, which are all related through a linear model of coregionalization. One of the fields will be used as conditiona

[R-sig-Geo] multivariate sequential gaussian cosimulation using gstat in R

2016-06-06 Thread William Savran
Dear All, I am new to gstat, R, and fairly new to applying geostatistical methods, so I have a few questions. I am looking to simulate a set of 3 (out of 4) correlated stochastic fields, which are all related through a linear model of coregionalization. One of the fields will be used as condit

Re: [R-sig-Geo] multivariate sequential gaussian cosimulation using gstat in R

2016-06-06 Thread Edzer Pebesma
On 06/06/16 19:03, William Savran wrote: > Dear All, > > I am new to gstat, R, and fairly new to applying geostatistical methods, so I > have a few questions. I am looking to simulate a set of 3 (out of 4) > correlated stochastic fields, which are all related through a linear model of > core

Re: [R-sig-Geo] Fwd: dissolve tiny polygons to others with unionSpatialPolygons{maptools}

2016-06-06 Thread Matt Strimas-Mackey
Hi Kumar, Based on the exchange in the thread Roger referenced I wrote a blog post summarizing my understanding of these issue of scale and numerical precision when performing topological operations with rgeos. It doesn't address your issue directly, however, I think it will be of some value. Good

Re: [R-sig-Geo] dissolve tiny polygons to others with unionSpatialPolygons{maptools}

2016-06-06 Thread Roger Bivand
On Mon, 6 Jun 2016, Kumar Mainali wrote: Thank you, Roger. I cannot fix the upstream processes to eliminate generation of these problems. So, I need to deal with the data I got. I tried various online resources including https://gist.github.com/mstrimas/1b4a4b93a9d4a158bce4 and tried: setScales(