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diff
2012 Mar 29
2
subtract a list of vectors from a list of data.frames in an elegant way
...in R code ######
DBquery ? ? <- list(tableA=data.frame(id = numeric(0), atwin = numeric(0), atrout = numeric(0)),
? ? ? ? ? ? ? ? ? ?tableB=data.frame(id = numeric(0), mq ? = numeric(0), z = numeric(0), m = numeric(0)),
? ? ? ? ? ? ? ? ? ?tableC=data.frame(V1 = numeric(0), mfn ? = numeric(0), iiff = numeric(0)),
? ? ? ? ? ? ? ? ? ?tableD=data.frame(id ? ?= numeric(0), msf ? = numeric(0), oom ?= numeric(0)))
lookup ? ? <- list(tableA= ? c('atwin', 'atrout'),
? ? ? ? ? ? ? ? ? tableB= ? ?c('m', 'z'),
? ? ? ? ? ? ? ? ? tableC= ? ?'ALL')
### ......