Re: [R-sig-Geo] (no subject)

2012-11-16 Thread Cam Plouffe
Hello, I'm sorry if you've received any spam mail or links from this email in the last few hours. Please do not open it. My email address was hacked, and I'm currently in the process of recovering it. Once again, sorry for the inconvenience. Cam [[alternative HTML version deleted]] __

Re: [R-sig-Geo] Segmentation of SpatialLines at Intersection

2011-08-17 Thread Cam Plouffe
=line > > You can use spgrass to integrate GRASS into R > > > I hope this helps, > > Mathieu > > 2011/8/15 Cam Plouffe > > > Hi everybody, > > > > I have a SpatialLines object that I created by using the gBoundary() > > function on a SpatialPolygo

[R-sig-Geo] Segmentation of SpatialLines at Intersection

2011-08-15 Thread Cam Plouffe
Hi everybody, I have a SpatialLines object that I created by using the gBoundary() function on a SpatialPolygons object. I've attached a plot ("SpatialLines Segmentation.png") of the SpatialLines object to this email. What I would like to do, is segment these SpatialLines wherever there is an in

Re: [R-sig-Geo] Constructing Polygons using bboxes from SpatialPolygonsDataFrame

2011-08-08 Thread Cam Plouffe
Thanks Roger. This does exactly what I want, and also gives me an understanding of the *apply functions, which will definitely come in handy. Cam On Mon, Aug 8, 2011 at 11:56 AM, Roger Bivand wrote: > On Mon, 8 Aug 2011, Cam Plouffe wrote: > > Hi everyone, >> >>

[R-sig-Geo] Constructing Polygons using bboxes from SpatialPolygonsDataFrame

2011-08-08 Thread Cam Plouffe
Hi everyone, I'm trying to make a function that constructs rectangular polygons based on the bounding boxes of other polygons from a SpatialPolygonsDataFrame. I am having a number of errors right now, which I am unsure how to fix. My code is basically as follows: temp = bbox(spdf_u[1,]) temp =

[R-sig-Geo] Using the gDifference function

2011-07-26 Thread Cam Plouffe
Hi everybody, I would like to use the gDifference function from the rgeos package to find the difference between 2 groups of polygons (poly1 and poly2). I've tried the gDifference function with my given polygons (I made 2 shapefiles of 3 simple polygons that overlap so I could see how the functio