search for: uniqueid_stratasize

Displaying 1 result from an estimated 1 matches for "uniqueid_stratasize".

Did you mean: uniqueids_stratasize
2009 Jul 12
2
strata -- really slow performance
...0+1 temp_species_patch_random_strata <- strata(patch_summary,c("UniqueID"),size=uniqueids_stratasize) The patch_summary data frame is too big to include in this email, but I'll give some summary results for the inputs. patch_summary has 48253 rows, UniqueID has 661 levels, and uniqueid_stratasize is a vector if 661 "1"s (corresponding to the 661 levels from UniqueID -- as I said I only want one per UniqueID). Am I doing something silly here? Am I using the wrong stratified sampling algorithm? Any help would be appreciated -- thanks -- I don't see why a stratified sampli...