R中的列绑定ff数据帧 [英] Columnbind ff data frames in R

问题描述

我尝试使用ff软件包.在这种情况下，我尝试绑定两个ff数据帧.我找到了将ffdf与ff矢量结合的解决方案，但是如何结合到ffdf.这是我将ffdf与ff向量结合的代码:

i try to work with the ff package. In this context i try to cbind two ff dataframes. I found a solution to combine a ffdf with a ff vector but how do i combine to ffdf. Here my code for combining ffdf with ff vector:

library(ff)
## read Bankfull flow##
setwd(wd)
bf <- read.csv.ffdf(file="G_BANKFULL_km3month.csv",header=TRUE)
## read river discharge global, monthly vlaues 1971-2000##
memory.limit(size=16000)   # increase working memory
dis <- read.table.ffdf(file='RIVER_AVAIL_7100_WG22.txt', header=T, sep="\t", dec=".")
##read bankfull values as ff object##
bfvalues <- ff(bf[,2])
##combination of bf and dis ( see test <- cbind(dis,bf$VALUE))
dis_bf <- do.call('ffdf', c(physical(dis), list(bfvalues=bfvalues)))

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