search for: data_temp2

...a bug or intended? Below you find a minimal example (adapted from > the code in the netcdf4 manual) of the ? in my eye ? strange behavior. > ?HI Raphael, I'm going to claim that this is more of an R question than a ncdf4 question per se. For example, you will notice that if you multiply data_temp2 times 1.0 (leaving values unchanged) or add zero to data_temp2, then the behavior is what you are expecting. Same holds if you multiply data_temp by 1.0 or add zero to it. It would seem that R does the equivalent of assigning another pointer to the data stored in data_temp rather than copying data...

...ame, list(var_temp)) #------------------------------- # Put some test data in the file #------------------------------- data_temp <- array(0.,dim=c(nx,ny,1)) for( j in 1:ny ) for( i in 1:nx ) data_temp[i,j,1] <- sin(i/10)*sin(j/10) # add some NAs data_temp[1:10, 1:5, 1] <- NA # copy data data_temp2 <- data_temp # show what we have data_temp[1:12, 1:7, 1] data_temp2[1:12, 1:7, 1] # write to netCDF connection ncvar_put( ncid_new, var_temp, data_temp, start=c(1,1,1), count=c(nx,ny,1)) # show what we have now data_temp[1:12, 1:7, 1] data_temp2[1:12, 1:7, 1] # Why are there no more NAs in d...