knitr:: kable changes chron dates

[liesb]

Not sure whether this is related to #806.
Dates (and differences, ie time between, between dates) in dataframes change once they are printed using kable.

Reproducible ( I hope :) ) example:

x <- chron(dates = c("02/27/92", "02/27/92", "01/14/92", "02/28/92"))
y <- x + c(1,2,3,4)
df <- data.frame(x=x, y=y)
df$diff <- y - x
df
knitr::kable(df)

will give

df
x y diff
1 02/27/92 02/28/92 1
2 02/27/92 02/29/92 2
3 01/14/92 01/17/92 3
4 02/28/92 03/03/92 4

kable(df)

x	y	diff
02/27/92	02/27/92	0
02/27/92	02/27/92	0
01/16/92	01/16/92	0
02/27/92	03/05/92	7

[aniruhil]

What about using

df$diff = difftime(y, x, units = "days")

df
x y diff
1 02/27/92 02/28/92 1 days
2 02/27/92 02/29/92 2 days
3 01/14/92 01/17/92 3 days
4 02/28/92 03/03/92 4 days

knitr::kable(df)

knitr::kable(df)

x	y	diff
02/27/92	02/27/92	1 days
02/27/92	02/27/92	2 days
01/16/92	01/16/92	3 days
02/27/92	03/05/92	4 days

[liesb]

Thank you! I don't really need the workaround at the moment, but I thought I'd report the original issue.

[yihui]

Yes, that is a similar issue as #806. I just fixed it. Thanks!

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