Steve Murray wrote:
Dear all,
I've been using R on a Mac to process some data for export to ArcMap GIS (which only runs on
Windows). ArcMap seems to require tab-delimited data (my data are in 3 columns), so I've been using
the sep="\t" argument. However, this resulted in strange end-of-line characters when
displayed on a PC. I looked in the write.table help file to find that eol="\r\n" can be
used to get around this problem, and it does indeed prevent these unwanted characters from
appearing.
However, the data still aren't properly recognised by ArcMap when created on a
Mac (the exact same code works fine from a PC). In ArcMap, when I select
'Display XY Data', the X (Longitude) and Y (Latitude) columns aren't available
to select. It's as if Arc isn't correctly interpreting the output from R - this
is despite me using col.names=TRUE in the write.table command.
Any light shed on this will be very gratefully received.
Many thanks for your help,
Steve
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Hi,
In addition to the other people. If you convert your data in R to one of
the spatial classes (see the sp-pacakge) you can use the rgdal-package
to dump these objects to e.g. a shapefile. This can be read by ArcGIS.
As a note, there is a special mailing list for geographic data and R,
r-sig-geo, which might be a better place to ask these kind of specific
questions.
good luck!
Paul
--
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: +3130 274 3113 Mon-Tue
Phone: +3130 253 5773 Wed-Fri
http://intamap.geo.uu.nl/~paul
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