reprojecting shape files (change coordinates)

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Have a look at the manual page for spTransform() in package rgdal.

HTH,
Tom

Am 21.06.2012 14:13, schrieb Marion Wenty:
Dear all,

I am trying to put two plots created with two different shape files

on top of each other.

They have got different coordinates and I would like to change them
(reproject the shape files) in order for them to

be exactly on top of each other.

I know that there are packages but I didn't understand which commands
I have to use.

first shape file:

Object of class SpatialPolygonsDataFrame
Coordinates:
        min      max
x 112518.2 685444.5
y 219903.9 514862.9
Is projected: NA
proj4string : [NA]

second shape file:

Object of class SpatialPolygonsDataFrame
Coordinates:
        min      max
x 112521.4 685441.9
y 275473.5 570451.2
Is projected: NA
proj4string : [NA]

Does anyone know the answer to this?

Thank you very much for your help in advance!

Marion

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