write function to convert to date or delete
Hello, Did you tried the "strptime" function? Regards, Pascal
On 27 February 2014 15:24, Bill <william108 at gmail.com> wrote:
Hi. Thanks. Actually I don't know which ones are causing problems. I cannot search through it because it is quite large (15 million records) On Thu, Feb 27, 2014 at 7:22 PM, Pascal Oettli <kridox at ymail.com> wrote:
Hello, Could you provide an example of unproperly formatted entry? Regards, Pascal On 27 February 2014 15:03, Bill <william108 at gmail.com> wrote:
I have a dataframe that looks like the below. I want to convert the
Captured.Time field to a date object. but some of the entries are not
properly formated and I get a message saying
Error in as.POSIXlt.character(as.character(x), ...) :
character string is not in a standard unambiguous format.
So I want to write a function that will convert or delete. I could not
figure out how to do that and so I tried to write a function that would
convert or replace with text like noDateHere but that did not work
either.
Can anyone tell me how to accomplish this?
Here is what I tried:
convertOrOmit=function(dt){tryCatch(as.POSIXct(dt),error=print("noDateHere"))}
X Captured.Time Latitude Longitude Value Unit Location.Name
1 12696963 2012-08-07 11:00:51 39.16094 140.4883 45 cpm
2 2056198 2013-11-10 03:14:19 32.84428 -117.2240 47 cpm
3 727957 2014-01-28 04:47:54 35.80605 139.3789 28 cpm
4 2864220 2013-10-22 19:41:53 35.07816 -106.6123 50 cpm
5 5787688 2013-06-13 04:13:57 35.83174 136.2027 35 cpm
6 6191345 2013-05-28 06:48:34 34.78944 137.9496 32 cpm
Device.ID MD5Sum Height Surface Radiation
1 NA b0465019b46289b82450c39ce1397b98 NA NA
2 NA 8fa14a1227d23e6cf286785e8843cc39 NA NA
3 NA c72cd7f9cedd59cf6e6892049dfbf9a0 NA NA
4 NA aca82e39ff9098e45eea04f661f68dc7 NA NA
5 NA cc9394e6dceb91f0e0de97cc2db57e19 NA NA
6 NA f18d194a41e1448c7776dbeba8b351af NA NA
Uploaded.Time Loader.ID
1 2012-08-13 19:16:10.18555 10832
2 2013-12-05 01:47:24.154971 13958
3 2014-01-29 22:55:39.138043 14451
4 2013-10-26 13:50:17.629869 13743
5 2013-06-16 16:17:21.148239 12930
6 2013-06-04 23:31:55.455323 12841
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-- Pascal Oettli Project Scientist JAMSTEC Yokohama, Japan
Pascal Oettli Project Scientist JAMSTEC Yokohama, Japan