[R] R Output and ArcGIS

[Steve Murray]

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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