Dear Edzer,
I transformed my SpatialGridDataFrame into a SpatiaPointsDataFrame (by the
way is there any coercion method such as as.SpatialPointsDataFrame
available in sp instead of creating a new one for I have not found it ?).
But this does not change my problem: I need the vector of attributes
Hello,
I would like to change or assign a new value of the z coordinates
intrinsically in a 3 dimensional SpatialGridDataFrame from absolute height
in UTM to relative height above the ground, in order to remove slope. So
basically, I would like to move the current position of the voxels
Is ground level varying, over your domain? If yes, the new set of voxels
may no longer be a regular grid in the new CRS; you could represent them
as a SpatialPointsDataFrame. If no, you could simply modify
obj@grid@cellcentre.offset[3]
On 02/13/2013 10:05 PM, Nathalie Morin wrote:
Hello,
