Hi,
Then your points are not a grid perfectly. Read the docs for gridded,
specifically the tolerance argument.
cheers,
Paul
Mehdi Khan schreef:
Hello Paul,
I get the following error:
gridded(wald)= TRUE
suggested tolerance minimum: 0.125000000000666
Error in points2grid(points, tolerance, round, fuzz.tol) :
dimension 1 : coordinate intervals are not constant
What do I do? Thanks a lot!
On Fri, Aug 21, 2009 at 12:34 PM, Paul Hiemstra <[email protected]
<mailto:[email protected]>> wrote:
Hi,
If your object's points are regularly spaced and in a
SpatialPoints object, use:
gridded(myobj) = TRUE
Or you can from a data.frame with the coordinates and attributes
to a grid by:
coordinates(myobj) = ~x+y
gridded(myobj) = TRUE
or shorthand:
gridded(myobj) = ~x+y
cheers,
Paul
Mehdi Khan schreef:
Hello, I have a matrix 1.5 million rows long..
wald:
coordinates V3
1 (-124.996, 42.0458) 150
2 (-124.987, 42.0458) 150
3 (-124.979, 42.0458) 150
4 (-124.971, 42.0458) 150
5 (-124.963, 42.0458) 150
6 (-124.954, 42.0458) 150
7 (-124.946, 42.0458) 150
8 (-124.938, 42.0458) 150
9 (-124.929, 42.0458) 150
10 (-124.921, 42.0458) 150
I would like to coerce this into a grid object so that I can
overlay points
onto it. How exactly could I accomplish that? Thank you!!
Mehdi Khan
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