1. wrap in proto. When creating your list structure try wrapping the data frames in proto objects: library(proto) L <- list(a = proto(DF ... ... <看更多>
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1. wrap in proto. When creating your list structure try wrapping the data frames in proto objects: library(proto) L <- list(a = proto(DF ... ... <看更多>
... <看更多>
The minimal rrapply-package contains a single function rrapply() , providing an extended implementation of R-base's rapply() function, which applies a function ... ... <看更多>
這時候就可以試著用R 內建的apply 家族,使用向量的方式來解決。 這邊介紹4 個apply 家族的成員,包含 apply() 、 lapply() 、 sapply() 以及 ... ... <看更多>
apply is not really the right tool, since this is a data frame (of sorts) not an array. How about gArea(parcProj, byid = TRUE). ... <看更多>