source("pnetcn.R") pnetcn_monthly <- function(clim,site,veg) { #assumes 118 columns of monthly data, followed by 99 columns yearly data output=pnetcn(clim,site,veg) output_monthly=data.frame(output[names(output)[1:118]]) return output_monthly } pnetcn_yearly <- function(clim,site,veg) { #assumes 118 columns of monthly data, followed by 99 columns yearly data output=pnetcn(clim,site,veg) output_yearly=data.frame(output[names(output)[119:218]]) return output_monthly }