blanc space not recognized
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Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 35/100
Research direction
Reproduce the report with data.table's fread() and compare unique() output against read.csv() using values with trailing spaces in FAUNISTIC_CATEGORY. Start at the fread import path and determine whether the differing levels are intentional or a parsing bug. Done means the behavior is clarified or corrected and the reported trailing-space case is covered by a regression test.
Written by the indexing model from the issue text.
Description
Hi,
I'm working with a file in which some codes for FAUNISTIC_CATEGORY have a blank space at the end (actually are wrong).
Running unique() to verify number of levels, if data were imported using datatable I got:
library(data.table)
l <- fread("xx.csv",stringsAsFactors = TRUE)
unique(l$FAUNISTIC_CATEGORY)
[1] Ae Ao B C Bst
Levels: Ae Ao B Bst C
while using the "classic" readtable I got the right ones:
l <- read.csv("xx.csv")
unique(l$FAUNISTIC_CATEGORY)
[1] Ae Ao B C Bst Ae Ao C B
Levels: Ae Ae Ao Ao B B Bst C C
Data.table ver 1.12.8
R version 3.6.3 (2020-02-29) -- "Holding the Windsock"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
Could you help me?
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