Hi there, the reason it's doing this is because there is no variable named "time" in the file. Obviously I need to patch the ncdf4 package so that it issues an/ understandable error message in this case instead of dying with a weird R error message. That is probably happening because there is a dimension named "time", but no variable name "time".
Perhaps what you meant to do instead is get the "Year" variable, which is, indeed, a variable in the file: Year <- ncvar_get( Model, "Year" ) Regards, --Dave On Sat, Mar 16, 2019 at 5:08 PM rain1290--- via R-help <r-help@r-project.org> wrote: > Hi there, > I am using climate model data in attempt to create a time series for a > specific location. Getting longitude and latitude is fine. However, I am > receiving the following error when using the "ncvar_get" function in trying > to derive the "time" dimension: > Error in nc$dim[[idobj$list_index]] : > attempt to select more than one element in get1index <real> > What could be causing this? > -This is what I have done so far: > #CanESM2 plotting for specified yearncfname<-"MaxPrecCCCMACanESM2rcp45.nc" > Prec<-raster(ncfname) > print(Prec) > Model<-nc_open(ncfname)longitude<-ncvar_get(Model, "lon") #Works fine > latitude<-ncvar_get(Model, "lat") #Works fine > time<-ncvar_get(Model, "time") #Error in nc$dim[[idobj$list_index]] : > attempt to select more than one element in get1index <real> > > > Here is the structure of the file after using "nc_open": > File MaxPrecCCCMACanESM2rcp45.nc (NC_FORMAT_NETCDF4): > > 3 variables (excluding dimension variables): > double onedaymax[lon,lat,time] (Contiguous storage) > units: mm/day > double fivedaymax[lon,lat,time] (Contiguous storage) > units: mm/day > short Year[time] (Contiguous storage) > > 3 dimensions: > time Size:95 > lat Size:64 > units: degree North > lon Size:128 > units: degree East > What could be causing this error? > Thanks in advance, and I look forward to your response! > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- David W. Pierce Division of Climate, Atmospheric Science, and Physical Oceanography Mail Stop 0230 Scripps Institution of Oceanography, La Jolla, California, USA (858) 534-8276 (voice) / (858) 534-8561 (fax) dpie...@ucsd.edu [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
