Thank you all for the hints, will see if I can move forward after reading deeply the spacetime package..
For the data (Amadou), this is not public dataset. Abdoulaye On Fri, Aug 8, 2014 at 4:39 PM, Edzer Pebesma <edzer.pebe...@uni-muenster.de > wrote: > Thanks; mentioning which packages provide the commands you mention in > your requests for help is another absolute requirement to get people to > help you. > > In particular in this case, as it concerned a non-cran packge: meteo, on > r-forge; http://r-forge.r-project.org/projects/meteo/ . > > On 08/08/2014 03:32 PM, Ahmadou Dicko wrote: > > I agree with everyone, you need to provide a reproducible example if you > > want people to help you. > > I don't know where you found the meteo2STFDF function, but you can use > the > > spacetime package to build a STFDF > > > > library(spacetime) > > library(rgdal) > > > > load("dprec84.rda") > > load("stations1.rda") > > > > coordinates(stations1) <- c("lon", "lat") > > proj4string(stations1) <- CRS("+init=epsg:4326") > > > > time <- as.POSIXct(unique(dprec84$date)) > > stfdf <- STFDF(stations1, time, data = dprec84[, "prec", drop = FALSE]) > > > > Feel free to read the vignette (vignette("jss816")) to know more about > the > > spacetime package. > > > > Just a quick question, though is this source of precipitation data > publicly > > available for researcher (Senegal) ? > > > > Hope it helps > > > > > > > > > > On Fri, Aug 8, 2014 at 1:07 PM, Milan Kilibarda <milan.kil...@gmail.com> > > wrote: > > > >> Dear Abdoulaye, > >> > >> Regarding to your Error message, I guess you should check if the time > >> format in your observation set was appropriate. In spacetime package > >> POSIXct is preferable. See ? as.POSIXct, for easy converting from > >> string to POSIX* format. If you still have problem, than you should > >> send at least str(dprec84) and str(stations1), or even better make > >> small subset in mail of your data, then people from the list could try > >> to reproduce the problem; try to find solution; and it can help > >> someone with a similar problem. > >> Best, > >> Milan > >> > >>> prec <- meteo2STFDF(dprec84,stations1, crs= CRS('+proj=longlat > >> +datum=WGS84')) > >> Joining by: staid, date > >> > >> Joining by: staid > >> Error in ST(sp, time, endTime) : time is not a time based class > >> > >> On Fri, Aug 8, 2014 at 1:55 PM, Abdoulaye Sarr <abdoulaye...@gmail.com> > >> wrote: > >>> I am still hoping to have a quick explanation on what is causing the > >> error > >>> or a suggestion on another way to do it? > >>> > >>> Cheers, > >>> eus > >>> > >>> > >>> On Sun, Aug 3, 2014 at 2:20 PM, Abdoulaye Sarr <abdoulaye...@gmail.com > > > >>> wrote: > >>> > >>>> I think the problem could be related to dates in precip, in fact here > I > >> am > >>>> using dekadal precip( 10 days average therefor for each month you have > >> 01, > >>>> 11 and 21 as you can see in the date in sample dataframes dprec84.rda > >> and > >>>> the stations1.rda. > >>>> > >>>> After creating these dataframes I am trying to use use meteo to > create a > >>>> STFDF (I guess other packaged could do it?) using the command below: > >>>> > >>>>> prec <- meteo2STFDF(dprec84,stations1, crs= CRS('+proj=longlat > >>>> +datum=WGS84')) > >>>> Joining by: staid, date > >>>> > >>>> Joining by: staid > >>>> Error in ST(sp, time, endTime) : time is not a time based class > >>>> > >>>> If doable with other package also will be fine for me. > >>>> > >>>> asarr > >>>> > >>>> > >>>> On Sun, Aug 3, 2014 at 9:40 AM, Edzer Pebesma < > >>>> edzer.pebe...@uni-muenster.de> wrote: > >>>> > >>>>> Please provide a small, reproducible example. > >>>>> > >>>>> Wbr, > >>>>> > >>>>> On 07/26/2014 08:29 PM, Abdoulaye SARR wrote: > >>>>>> > >>>>>> Hello list, > >>>>>> > >>>>>> I am creating a space time full data frame but having this error > >>>>> message: > >>>>>> > >>>>>> Joining by: staid > >>>>>> Error in ST(sp, time, endTime) : time is not a time based class > >>>>>> > >>>>>> the data frame 10 days average precip used looks like this: > >>>>>> > >>>>>> staid time prec > >>>>>> 1 38007200 1984-01-01 0.0 > >>>>>> 2 38008400 1984-01-01 0.8 > >>>>>> 3 38014000 1984-01-01 0.0 > >>>>>> 4 38008100 1984-01-01 0.0 > >>>>>> 5 38008700 1984-01-01 0.0 > >>>>>> 6 38009200 1984-01-01 0.0 > >>>>>> > >>>>>> > >>>>>> The next date 1984-01-11 etc.. > >>>>>> > >>>>>> could someone help solve this urgent issue. > >>>>>> > >>>>>> Best regards, > >>>>>> > >>>>>> eus > >>>>>> > >>>>>> > >>>>>> [[alternative HTML version deleted]] > >>>>>> > >>>>>> _______________________________________________ > >>>>>> R-sig-Geo mailing list > >>>>>> R-sig-Geo@r-project.org > >>>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > >>>>>> > >>>>> > >>>>> -- > >>>>> Edzer Pebesma > >>>>> Institute for Geoinformatics (ifgi), University of Münster > >>>>> Heisenbergstraße 2, 48149 Münster, Germany. Phone: +49 251 > >>>>> 83 33081 http://ifgi.uni-muenster.de GPG key ID 0xAC227795 > >>>>> > >>>>> > >>>>> _______________________________________________ > >>>>> R-sig-Geo mailing list > >>>>> R-sig-Geo@r-project.org > >>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > >>>>> > >>>>> > >>>> > >>> > >>> [[alternative HTML version deleted]] > >>> > >>> > >>> _______________________________________________ > >>> R-sig-Geo mailing list > >>> R-sig-Geo@r-project.org > >>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > >>> > >> > >> > >> > >> -- > >> Dr. Milan Kilibarda > >> Assistant professor > >> University of Belgrade, > >> Faculty of Civil Engineering, > >> Department of Geodesy and Geoinformatics, > >> Address: Bulevar kralja Aleksandra 73 11000 Belgrade, Serbia, > >> Mail: k...@grf.bg.ac.rs > >> Web: http://www.grf.bg.ac.rs/fakultet/pro/e?nid=168 ; > >> http://dailymeteo.org/ > >> Pub: http://scholar.google.com/citations?user=Zl2MZ3AAAAAJ&hl=en > >> tel:+381 11 3218630 > >> > >> _______________________________________________ > >> R-sig-Geo mailing list > >> R-sig-Geo@r-project.org > >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > >> > > > > > > > > > > > > _______________________________________________ > > R-sig-Geo mailing list > > R-sig-Geo@r-project.org > > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > > > -- > Edzer Pebesma > Institute for Geoinformatics (ifgi), University of Münster > HeisenbergstraÃe 2, 48149 Münster, Germany. Phone: +49 251 > 83 33081 http://ifgi.uni-muenster.de GPG key ID 0xAC227795 > > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > [[alternative HTML version deleted]]
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