Hello,
I have some R code that uses readShapeSpatial in the maptools package to read a
shapefile from ArcGIS. This code worked as recently as May 2016, when I was
using R version 3.2.3. Then, R was updated to version 3.3.0. Now, when I run
the same code that worked three weeks ago, I get an error:
> path <- "W:/..../CAP_2011_blocks_repair.shp"
> shape <- readShapeSpatial(path, IDvar="GEOID10")
Error in if (nchar(projargs) == 0) projargs <- as.character(NA) :
missing value where TRUE/FALSE needed
Note that if I run the code above using the older version of R (3.2.3), it does
not give me an error, and instead provides me with an
"SpatialPolygonsDataFrame" object.
However, it is not easy for me to switch back and forth between versions of R
because I work on a protected computer that does not have an internet
connection or an easy mechanism for file transfer.
I am using the SpatialPolygons object as an input for subsequent analysis, so I
need something of this type.
Your help would be greatly appreciated.
Regards,
Mercedes
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