We can only speculate, but mask_10m.asc may contain missing values, and not refer to rainfall (directly).
On 09/25/2014 09:57 AM, Tomislav Hengl wrote: > > Helen, > > Most likely you need to subset the missing values by using e.g. > "precip[!is.na(precip$annaul_2001),]", but it is difficult to see if you > maybe have a typo with variable names. > > Try using "traceback()" and check the amount of missing values by using > e.g. "summary(is.na(precip$annaul_2001))" and/or > "summary(complete.cases(precip))". > > HTH, > > T. (Tom) Hengl > Researcher @ ISRIC - World Soil Information > Url: http://www.wageningenur.nl/en/Persons/dr.-T-Tom-Hengl.htm > Network: http://profiles.google.com/tom.hengl > Publications: http://scholar.google.com/citations?user=2oYU7S8AAAAJ > > > On 25-9-2014 7:57, Helen Chen wrote: >> Hi, >> >> I am following the code provide from this link: >> http://spatial-analyst.net/wiki/index.php?title=Regression-kriging_guide) >> with my own data. >> >> but I got stuck in fitting variogram, the error message is as follow: >> >>> vgm_precip_r <- fit.variogram(variogram(annaul_2001~mask_10m.asc, >> precip), model=null.vgm) >> Error in na.fail.default(list(annaul_2001 = c(945.134, 648.716, >> 559.562, : >> missing values in object >> >> But I have checked that there is no missing value in my rainfall data. >> Any >> help would be very much appreciated. >> >> Helen >> >> [[alternative HTML version deleted]] >> >> _______________________________________________ >> R-sig-Geo mailing list >> [email protected] >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo >> > > _______________________________________________ > R-sig-Geo mailing list > [email protected] > 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
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