librarydplyrlibrarytoolsrequiredatatablerequirerio###calculate GDD functiongdd_calc - functionT_min T_max T_min_ - T_min T_max_ - T_max mint - ifelseT_min_ 10 10 ifelseT_min_ 30 30 T_min_ maxt
write.csv(outfile, file = "E:/trainingdata/wheatOUTfile/75csv/Hebei_bazhou_gdd.csv", row.names = FALSE)
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