[R-sig-Geo] upload waypoint data to Garmin GPS

[Patrick Giraudoux]

Dear listers,

I am writing a R function to upload waypoints to a GPS Garmin Etrex 
with  gpsbabel. This works quite well reading from a text file as following:

df<-"mytabfile.txt"
system(paste("gpsbabel -w -i tabsep -f ",df," -o garmin -F com5:",sep=""))

However, I would prefer to upload from a data.frame within R rather than 
reading a tab delimited text file on the disk.

Any idea about how to specify it in the command line (should be trivial, 
but I cannot figure it out) ?

Thanks in advance,

Patrick


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