|---------+---------------------------->
| | [EMAIL PROTECTED]|
| | nl |
| | |
| | 29/06/2006 17:28 |
| | |
|---------+---------------------------->
>------------------------------------------------------------------------------------------------------------------------------|
|
|
| To: [EMAIL PROTECTED]
|
| cc: r-sig-geo@stat.math.ethz.ch
|
| Subject: Re: [R-sig-Geo] generate & plot elevation contour lines
|
>------------------------------------------------------------------------------------------------------------------------------|
contourLines is base graphics in R, so it needs arguments the
same way contour and image (in base) need them; read their
help pages, and it is especially important that you get x, y and
z right for the contourlines to have the right topology. But hey,
I believe I wrote a function as.image.SpatialGridDataFrame
in sp which does this for you.
Try:
contourLines(as.image(as(topo.idw, "SpatialGridDataFrame")))
--
Edzer
Eventually I had success with the following construct.
CL <- contourLines2SLDF(contourLines(as.image.SpatialGridDataFrame
(as(topo.idw["var1.pred"],"SpatialGridDataFrame"))))
I then passed CL using sp.layout and it worked
The next challenge is how to pass the corresponding labels ?
Thanks
Karl
_______________________________________________
R-sig-Geo mailing list
R-sig-Geo@stat.math.ethz.ch
https://stat.ethz.ch/mailman/listinfo/r-sig-geo
