[R] Casting Date to char

[Ben Tupper]

Hi,

Perhaps you wanted to convert dp$rainfall.sampdate and not dp$sampdate like this...

dp$sampdate <- as.character(dp$rainfall.sampdate)

... or even better, take charge of the conversion with format() ...

dp$sampdate <- format(dp$rainfall.sampdate, format = '%Y-%m-%d')

Cheers,
Ben

> On Sep 5, 2018, at 4:17 PM, Rich Shepard <rshepard using appl-ecosys.com> wrote:
> 
>  I've read the help for as.Date: "Date Conversion Functions to and from
> Character" but the method as.character(x ...) isn't working for me:
> 
>> str(dp)
> 'data.frame':	113569 obs. of  2 variables:
> $ rainfall.sampdate: Date, format: "2005-01-01" "2005-01-02" ...
> $ rainfall.prcp    : num  0.59 0.08 0.1 0 0 0.02 0.05 0.1 0 0.02 ...
>> dp$sampdate <- as.Character(dp$sampdate)
> Error in `$<-.data.frame`(`*tmp*`, sampdata, value = character(0)) :
>  replacement has 0 rows, data has 113569
> 
>  I don't understand the error message and want to learn what I've done
> incorrectly.
> 
> Regards,
> 
> Rich
> 
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Ben Tupper
Bigelow Laboratory for Ocean Sciences
60 Bigelow Drive, P.O. Box 380
East Boothbay, Maine 04544
http://www.bigelow.org

Ecological Forecasting: https://eco.bigelow.org/






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