Colleagues.
When I read another file that is in the same folder in the work environment, it appears:
source("Functions.R")
Error in ogrInfo(dsn = dsn, layer = layer, encoding = encoding, use_iconv = use_iconv, :
Cannot open data source
I switched computers and now do not read the functions
I've noticed that rgdal functions work differently on different operating systems. Check how dsn is defined in the script and maybe there may be the problem.
I can tell you about my experience working on both OS X and Windows. To read a shapefile, it is executed as a generic:
library(rgdal)
readOGR(dsn,layer)
In OS X, none of the following options raise an error:
readOGR(dsn='/ruta/a/carpeta/',layer='prueba')
readOGR(dsn='/ruta/a/carpeta',layer='prueba')
In Windows, the second works for me without problems, but the first throws the following error:
Error in ogrInfo(dsn = dsn, layer = layer, encoding = encoding, use_iconv = use_iconv, :
Cannot open layer
So if the work folder contains a / at the end, it could be that it is generating an error in your case.