[R] Fwd: as.Date gives NAs when transforming from factor

[Jeff Newmiller]

Don't give a factor to as.Date. Convert it to character first, or avoid letting it become a factor in the first place by using the stringsAsFactors =FALSE option to the read.table function or its related functions. 
-- 
Sent from my phone. Please excuse my brevity.

On April 5, 2016 4:53:56 PM PDT, "Omar André Gonzáles Díaz" <oma.gonzales at gmail.com> wrote:
>Hi,
>
>I would appreciate your help.
>
>I’m having problems when transforming  a column from “factor” to
>“date”.
>
>
>
>It does not convert just: 31/03/2016 correctly, it out puts: NA.
>
>
>
>04/04/2016  turns out as: 2016-04-04
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>
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>02/04/2016 turns out as: 2016-02-04
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>31/03/2016 turns out as: NA
>
>03/04/2016 turns out as: 2016-03-04.
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>Code:
>
>a <- read.csv("dates.csv", stringsAsFactors = F)
>
>
>
>a$Date <- as.Date(a$Date, format = "%m/%d/%Y")
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>
>
>
>Posible Solutions:
>
>
>
>I’ve read here that it has to do with the Sys Locale, and the solution
>was
>using: “LC_TIME”, “C”. But I didn’t have success.
>
>http://stackoverflow.com/questions/15566875/as-date-returning-na-in-r
>
>
>
>
>
>
># Sys.getlocale("LC_TIME")
>
>#
>
># Sys.setlocale("LC_TIME", "C")
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>Slds,
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