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[R-Forge #4766] add boolean detection to fread #567

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arunsrinivasan opened this issue Jun 8, 2014 · 1 comment

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feature request

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arunsrinivasan commented Jun 8, 2014

Submitted by: Adam November; Assigned to: Nobody; R-Forge link

right now fread reads logicals as character strings. Could they be detected as logicals?

df <- data.frame(I=1:3, L=c(T,F,NA))

write.csv(df,'tmp.csv',row.names=F)

df2 = read.csv('tmp.csv')
class(dt$L)
# [1] "logical"

dt = fread('tmp.csv')
class(dt$L)
# [1] "character"

mattdowle added a commit that referenced this issue


fread NA and blank in logical columns, #567

24ce773

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mattdowle commented Jun 27, 2014

It does read logicals in v1.9.2 but not if blank or NA were in the column. Now fixed.

mattdowle closed this as completed

arunsrinivasan assigned mattdowle

adamkennedy mentioned this issue

NA values break type detection of logicals #736

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