It seems like it is from sirad packages. Thanks for the help.
Cheers Frederic Ntirenganya Maseno University, African Maths Initiative, Kenya. Mobile:(+254)718492836 Email: fr...@aims.ac.za https://sites.google.com/a/aims.ac.za/fredo/ On Fri, Mar 24, 2017 at 4:28 PM, PIKAL Petr <petr.pi...@precheza.cz> wrote: > Hi > > Did you define function ap? > > Cheers > Petr > > > -----Original Message----- > > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Frederic > > Ntirenganya > > Sent: Friday, March 24, 2017 1:18 PM > > To: r-help@r-project.org > > Subject: [R] Error: could not find function "ap" > > > > Dear All, > > > > I hope you are doing well. > > > > I am new in using evapotranspiration packages and got the following > error: > > > > Error: could not find function "ap" > > > > The code I am using and data are: > > > > dat1<-read.csv("/home/fredo/Documents/Meteo Data/Meteo Rwa > > data.csv",header=T,na.string="9999") > > dat1$u.daily<-dat1$Wind.Speed*0.514444 > > dat1$Date<-as.Date(paste(dat1$Year,dat1$Month,dat1$Day,sep="-")) > > #dat1$DOY<-dayOfYear(dat1$Date) > > dat1$Longitude<-30.11 > > dat1$Latitude<--1.95 > > dat1$Elevation<-1490 > > dat1$RHmax.daily<-dat1$RHmax.daily > > dat1$RHmin.daily<-dat1$RHmin.daily > > dat1$Tmax.daily<-dat1$Tmax.daily > > dat1$Tmin.daily<-dat1$Tmin.daily > > #dat1<-subset(select=-Wind.direction.measured.in.Degrees) > > Sunshine<-dat1$n.daily > > lat<-as.numeric(dat1$Latitude) > > lon<-as.numeric(dat1$Longitude) > > days<-dat1$Date > > require(zoo) > > A <- 0.21 > > B <- 0.57 > > dat1$RS.daily<-ap(days,lat,lon,A,B,Sunshine,extraT=NULL) > > View(dat1) > > > > > > > > dput(head(dat1)) > > structure(list(Year = c(1984L, 1984L, 1984L, 1984L, 1984L, 1984L ), > Month = > > c(1L, 1L, 1L, 1L, 1L, 1L), Day = 1:6, Wind.Speed = c(5L, 4L, 4L, 3L, 5L, > 6L), n.daily > > = c(6.3, 4.8, 0.6, 8.2, 7.3, 1.7 ), Tmax.daily = c(27.4, 26.3, 22.9, > 27.7, 28.5, 25.5), > > Tmin.daily = c(14.5, 16, 14.4, 14.8, 16.6, 15.4), RHmax.daily = c(100L, > 95L, 97L, > > 100L, 97L, 99L), RHmin.daily = c(45L, 62L, 72L, 55L, 54L, 63L ), > Station.Name = > > structure(c(1L, 1L, 1L, 1L, 1L, 1L), .Label = "KIGALI AERO", class = > "factor"), > > Elevation = c(1490, 1490, 1490, 1490, 1490, 1490), Longitude = > c(30.11, > > 30.11, 30.11, 30.11, 30.11, 30.11), Latitude = c(-1.95, -1.95, > > -1.95, -1.95, -1.95, -1.95), u.daily = c(2.57222, 2.057776, > > 2.057776, 1.543332, 2.57222, 3.086664), Date = structure(c(5113, > > 5114, 5115, 5116, 5117, 5118), class = "Date")), .Names = c("Year", > "Month", > > "Day", "Wind.Speed", "n.daily", "Tmax.daily", "Tmin.daily", > "RHmax.daily", > > "RHmin.daily", "Station.Name", "Elevation", "Longitude", "Latitude", > > "u.daily", "Date"), row.names = c(NA, 6L), class = "data.frame") > > > > > > I appreciate your help in advance! > > > > Best regards, > > Fredo. > > > > > > > > > > > > > > Frederic Ntirenganya > > Maseno University, > > African Maths Initiative, > > Kenya. > > Mobile:(+254)718492836 > > Email: fr...@aims.ac.za > > https://sites.google.com/a/aims.ac.za/fredo/ > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide http://www.R-project.org/posting- > > guide.html > > and provide commented, minimal, self-contained, reproducible code. > > ________________________________ > Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou > určeny pouze jeho adresátům. > Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě > neprodleně jeho odesílatele. 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