Hello, I'm having trouble with using the alpha channel for transparency
with lines with spplot and
sp.lines.
If I use transparency via the alpha argument to rgb to overplot lines on
spplot.grid the transparent colour affects all of the colours in the
plot. Example follows.
I've put the pdfs a
On Wed, 21 Mar 2007, Virgilio Gómez-Rubio wrote:
> Hi,
>
> > #errors occurs
> > env.lab <- Kenv.label(case_pts,control_pts,splancs_poly, nsim=999, seq
> > (0,23000,500))
> > error:v error in erifyclass(X, "ppp") : argument 'X' is not of class
> > 'ppp'
> >
> > Q1: Now that khat(splancs)
Hi,
> #errors occurs
> env.lab <- Kenv.label(case_pts,control_pts,splancs_poly, nsim=999, seq
> (0,23000,500))
> error:v error in erifyclass(X, "ppp") : argument 'X' is not of class
> 'ppp'
>
> Q1: Now that khat(splancs) goes fine, why not Kenv.label(splancs)?
> From the help, it didn't
Virgilio Gómez-Rubio, Thanks for your rapid reply.
I have got some progress, but still have some problems.
#read the data
case<-readShapePoints("d:/d/case.shp")
control<-readShapePoints("d:/d/control.shp")
guichi<-readShapePoly("d:/d/guichi2.shp")
#Conversion
case_pts <- coordinates(case)
control
Hi,
El mié, 21-03-2007 a las 22:45 +0800, zhijie zhang escribió:
> Dear friends,
> I have a .shp file of region boundary, and i want to use it as the polygon
> in the khat(splancs) function, but it goes wrong.
> # khat(pts,poly,s,newstyle=FALSE)
>
> guichi<-readShapePoly("d:/d/guichi2.shp") #
Dear friends,
I have a .shp file of region boundary, and i want to use it as the polygon
in the khat(splancs) function, but it goes wrong.
# khat(pts,poly,s,newstyle=FALSE)
guichi<-readShapePoly("d:/d/guichi2.shp") # read the shp data of region
boundary
guichi2<-Polygon(coordinates(guichi), ho
On Wed, 21 Mar 2007, Stéphane Dray wrote:
> I just checked the code and see that my function was not optimal (too
> much loops). I think that it can be easily improve and I can try to
> write a intersectSpatialPolygons. There is a unionSpatialPolygons in
> maptools, I think that an intersect f
I just checked the code and see that my function was not optimal (too
much loops). I think that it can be easily improve and I can try to
write a intersectSpatialPolygons. There is a unionSpatialPolygons in
maptools, I think that an intersect function could be also useful. For
instance, one th
On Tue, 20 Mar 2007, Andrew Niccolai wrote:
> Greetings spatial R users,
>
> I have a question that is most likely straightforward but I am stuck on this
> one!
>
> I have a set of points that can be of the class "SpatialPoints" or of the
> class "ppp" and they reside within a polygon of the cla
On Tue, 20 Mar 2007, Stéphane Dray wrote:
> I have a code that do the job for polylist objects at
> http://biomserv.univ-lyon1.fr/~dray/files/softwares/spatialRLQ/spatialrlq.R
>
> The function uses gpclib and only returns area or binary matrices (1
> intersect, 0 not). It could be easily modify
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