Hello everybody the problem has been solved. It was my mistake not to be ensured that any N/A had dissapeared. I do apologize for the inconveniences caused ;) friendly greeting sfrom Spain!
Arantzazu Blanco Bernardeau Dpto de Química Agrícola, Geología y Edafología Universidad de Murcia-Campus de Espinardo ---------------------------------------- > From: aramu...@hotmail.com > To: ivan.calan...@uni-hamburg.de > Subject: RE: [R] "Re: Change class factor to numeric" > Date: Tue, 18 May 2010 16:36:55 +0000 > > > Hallo Ivan > I do thank you a lot, but as you have read in the last email, I did think > that maybe one erroneus typing was indicating R to take it as a factor. I did > look again the original dataframe and did find the mistake, and now it works > OK. Sorry, but I had done so many reviews of the data frame, that did not > think on it before. > Schon wieder danke schön, und freundliche Grüsse aus Spanien ;) > > > > > Arantzazu Blanco Bernardeau > Dpto de Química Agrícola, Geología y Edafología > Universidad de Murcia-Campus de Espinardo > > > > > > > > > > ---------------------------------------- >> Date: Tue, 18 May 2010 18:28:45 +0200 >> From: ivan.calan...@uni-hamburg.de >> To: aramu...@hotmail.com >> Subject: Re: [R] "Re: Change class factor to numeric" >> >> As you can notice, I'm writing off list for you to send me your data (as >> csv). >> But do it fast, I'll be leaving soon. If not it might have to wait until >> tomorrow! >> >> In any case, I'm no expert, so I'm not sure I'll be able to help you. >> And I don't think NAs should be problematic. It might be solved by some >> arguments into the read.table() call. >> >> Can you also send me the line of code you used to import your csv? >> >> Ivan >> >> Le 5/18/2010 18:25, Arantzazu Blanco Bernardeau a écrit : >>> >>> Hi again! >>> could it be that NA was introduced in the variable for not available >>> values, and being NA a character, it takes everything as factor?? >>> is the only idea I have, because it is the first time I have this problem >>> Thanks a lot, I am really learning! :) >>> >>> >>> Arantzazu Blanco Bernardeau >>> Dpto de Química Agrícola, Geología y Edafología >>> Universidad de Murcia-Campus de Espinardo >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> ---------------------------------------- >>> >>>> Date: Tue, 18 May 2010 18:17:02 +0200 >>>> From: ivan.calan...@uni-hamburg.de >>>> To: r-help@r-project.org >>>> Subject: Re: [R] "Re: Change class factor to numeric" >>>> >>>> Hi again, >>>> >>>> If you used the function read.table() to read from a csv file into a >>>> data.frame, it is weird that numeric data are converted into factors. >>>> I would check in the original data that you don't have a typo somewhere. >>>> I don't know all the possibilities, but a special character can >>>> definitely make R interpret this variable differently. >>>> >>>> For Drenaje, it is normal. In that case you can just use: >>>> caperf$Drenaje<- factor(caperf$Drenaje) >>>> >>>> HTH >>>> Ivan >>>> >>>> Le 5/18/2010 17:59, Arantzazu Blanco Bernardeau a écrit : >>>> >>>>> Hello >>>>> so, here you have the output of the data frame. The data frame comes from >>>>> a csv file. >>>>> I could take Gr_2 instead of arcilla, because it is the same value... but >>>>> curiously, it is a factor as well. >>>>> >>>>> >>>>>> str(caperf) >>>>>> >>>>>> >>>>> 'data.frame': 556 obs. of 38 variables: >>>>> $ Hoja : int 818 818 818 818 818 818 818 818 818 818 ... >>>>> $ idmuestra : Factor w/ 555 levels "1015-I","1015-II",..: 26 27 28 29 31 >>>>> 32 33 34 30 35 ... >>>>> $ Año : int 1994 1994 1994 1994 1994 1994 1994 1994 1994 1994 ... >>>>> $ x : int 655500 633050 632200 635000 637150 643700 655300 648000 653400 >>>>> 646200 ... >>>>> $ y : int 4285800 4283050 4298150 4290000 4294800 4288850 4282700 4290350 >>>>> 4298450 4296650 ... >>>>> $ CO_gkg1 : num 3.7 6.5 6.3 2.6 12.1 6.9 3.5 10.8 10.3 3.3 ... >>>>> $ NTgkg_1 : num 0.53 1.01 0.66 0.42 1.3 0.82 0.43 1.31 0.85 0.51 ... >>>>> $ C_Nratio : num 6.98 6.46 9.55 6.18 9.33 ... >>>>> $ C03Ca : num 53.6 38 1.2 1.1 21.1 ... >>>>> $ pHw : num 8 8.4 8.3 8.4 8.45 8.2 8.4 8.4 8.1 8.4 ... >>>>> $ pHClK : num 7.5 7.4 7.2 7.4 8.3 7.5 7.8 7.4 7.4 7.5 ... >>>>> $ CCC : num 9.7 14.4 10.5 7.2 12.8 ... >>>>> $ CEdSm : num 0.62 0.72 0.38 0.36 19.35 ... >>>>> $ pF1_3atm : num 25.4 21.3 9.1 12.8 24.1 ... >>>>> $ pF15atm : num 15.3 10.6 5.8 6.1 8.45 11 3.7 18.8 10 14.3 ... >>>>> $ Gr_2 : Factor w/ 391 levels "0","0.71","0.9",..: 200 31 158 36 142 60 >>>>> 377 263 140 151 ... >>>>> $ Gr2_20 : num 19.1 39.1 2.9 5.2 NA 12.5 5.7 29.5 17.3 10.5 ... >>>>> $ Gr20_50 : num 17.6 9.8 4.7 4 NA 10.4 4.2 13.3 12.5 7.8 ... >>>>> $ Gr50_100 : num 14.1 12.2 7.6 9 NA 9.1 6.1 8.5 9.1 18.9 ... >>>>> $ Gr100_250 : num 13.4 17.1 28.7 46.2 NA 20.8 28.7 13.6 16.8 32.9 ... >>>>> $ Gr250_500 : num 7.1 5.7 28.8 15.2 NA 24.7 23.4 3.8 11.4 6.9 ... >>>>> $ Gr500_1000 : num 4 1.8 5 3.9 NA 4.2 14.3 0.9 8.9 2.1 ... >>>>> $ Gr1000_2000 : num 1.4 2 1.9 4 NA 4.1 8.9 0.4 4.8 0.9 ... >>>>> $ arcilla : Factor w/ 391 levels "0","0.71","0.9",..: 201 32 158 37 NA 61 >>>>> 377 263 141 151 ... >>>>> $ limo : num 36.7 48.9 7.6 9.2 0 22.9 9.9 42.8 29.8 18.3 ... >>>>> $ arena : num 40 38.8 72 78.3 0 62.9 81.4 27.2 51 61.7 ... >>>>> $ SUMA : Factor w/ 15 levels "0","100","100.2",..: 2 2 2 2 1 2 2 2 2 2 ... >>>>> $ codusosuelo : logi NA NA NA NA NA NA ... >>>>> $ pendiente : Factor w/ 9 levels "0","1","2","3",..: 3 2 3 3 2 4 3 2 2 3 >>>>> ... >>>>> $ profutil : logi NA NA NA NA NA NA ... >>>>> $ profutil.1 : int 50 110 120 40 80 52 30 120 37 80 ... >>>>> $ pedregosidad: int 0 0 0 2 0 4 4 0 3 3 ... >>>>> $ Drenaje : int 4 4 4 4 1 4 5 3 4 4 ... >>>>> $ codsuelo : num 1.1 2.1 3.1 2.1 12.3 2.5 2.5 4.1 2.5 2.1 ... >>>>> $ textura : logi NA NA NA NA NA NA ... >>>>> $ m.original : Factor w/ 7 levels "Calizas . dolomías y areniscas",..: 4 >>>>> 7 7 2 2 7 7 7 7 7 ... >>>>> $ GRUPOPPAL : Factor w/ 13 levels "Arenosoles","Calcisoles",..: 11 2 3 2 >>>>> 12 2 2 4 2 2 ... >>>>> $ SUELO : Factor w/ 40 levels "Arenosol calcárico",..: 30 3 8 3 36 7 7 10 >>>>> 7 3 ... >>>>> >>>>> In the other side, the variable Drenaje (drainage) that is factor mode, >>>>> appears as integer. >>>>> Thanks a lot! >>>>> >>>>> >>>>> Arantzazu Blanco Bernardeau >>>>> Dpto de Química Agrícola, Geología y Edafología >>>>> Universidad de Murcia-Campus de Espinardo >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> ---------------------------------------- >>>>> >>>>> >>>>>> Date: Tue, 18 May 2010 17:49:54 +0200 >>>>>> From: ivan.calan...@uni-hamburg.de >>>>>> To: >>>>>> Subject: Re: [R] "Re: Change class factor to numeric" >>>>>> >>>>>> Hi, >>>>>> >>>>>> I think that providing the output from str(data array or whatever you >>>>>> have) would help. >>>>>> Because, for now, we don't have much idea of what you really have. >>>>>> Moreover, some sample data is always welcomed (using the function dput >>>>>> for example) >>>>>> >>>>>> Ivan >>>>>> >>>>>> >>>>>> Le 5/18/2010 17:36, Arantzazu Blanco Bernardeau a écrit : >>>>>> >>>>>> >>>>>>> sorry I had a mistake sending my question without a subject. I do >>>>>>> resend again. Please excuse me. >>>>>>> >>>>>>> >>>>>>> >>>>>>>> Hello >>>>>>>> I have a data array with soil variables (caperf), in which the >>>>>>>> variable "clay" is factor (as I see entering str(caperf)) . I need to >>>>>>>> do a regression model, so I need to have arcilla (=clay) as a numeric >>>>>>>> variable. For that I have entered >>>>>>>> >>>>>>>> as.numeric(as.character(arcilla)) >>>>>>>> >>>>>>>> and even entering >>>>>>>> 'as.numeric(levels(arcilla))[arcilla]'the variable is resting as >>>>>>>> factor, and the linear model is not valid (for my purposes). >>>>>>>> The decimal commas have been converted to decimal points, so I have no >>>>>>>> idea of what to do. >>>>>>>> Thanks a lot >>>>>>>> >>>>>>>> >>>>>>>> Arantzazu Blanco Bernardeau >>>>>>>> Dpto de Química Agrícola, Geología y Edafología >>>>>>>> Universidad de Murcia-Campus de Espinardo >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> _________________________________________________________________ >>>>>>>> Diseñar aplicaciones tiene premio. ¡Si eres desarrollador no esperes >>>>>>>> más! >>>>>>>> http://www.imaginemobile.es >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> _________________________________________________________________ >>>>>>> Recibe en tu HOTMAIL los emails de TODAS tus CUENTAS. + info >>>>>>> >>>>>>> ______________________________________________ >>>>>>> R-help@r-project.org mailing list >>>>>>> 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. >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> -- >>>>>> Ivan CALANDRA >>>>>> PhD Student >>>>>> University of Hamburg >>>>>> Biozentrum Grindel und Zoologisches Museum >>>>>> Abt. Säugetiere >>>>>> Martin-Luther-King-Platz 3 >>>>>> D-20146 Hamburg, GERMANY >>>>>> +49(0)40 42838 6231 >>>>>> ivan.calan...@uni-hamburg.de >>>>>> >>>>>> ********** >>>>>> http://www.for771.uni-bonn.de >>>>>> http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php >>>>>> >>>>>> ______________________________________________ >>>>>> R-help@r-project.org mailing list >>>>>> 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. >>>>>> >>>>>> >>>>> >>>>> ______________________________________________ >>>>> R-help@r-project.org mailing list >>>>> 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. >>>>> >>>>> >>>>> >>>> -- >>>> Ivan CALANDRA >>>> PhD Student >>>> University of Hamburg >>>> Biozentrum Grindel und Zoologisches Museum >>>> Abt. Säugetiere >>>> Martin-Luther-King-Platz 3 >>>> D-20146 Hamburg, GERMANY >>>> +49(0)40 42838 6231 >>>> ivan.calan...@uni-hamburg.de >>>> >>>> ********** >>>> http://www.for771.uni-bonn.de >>>> http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php >>>> >>>> ______________________________________________ >>>> R-help@r-project.org mailing list >>>> 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. >>>> >>> >>> _________________________________________________________________ >>> http://serviciosmoviles.es.msn.com/messenger/blackberry.aspx >>> >> >> -- >> Ivan CALANDRA >> PhD Student >> University of Hamburg >> Biozentrum Grindel und Zoologisches Museum >> Abt. Säugetiere >> Martin-Luther-King-Platz 3 >> D-20146 Hamburg, GERMANY >> +49(0)40 42838 6231 >> ivan.calan...@uni-hamburg.de >> >> ********** >> http://www.for771.uni-bonn.de >> http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php >> > > _________________________________________________________________ > Recibe en tu HOTMAIL los emails de TODAS tus CUENTAS. + info > http://www.vivelive.com/hotmail-la-gente-de-hoy/index.html?multiaccount _________________________________________________________________ Diseñar aplicaciones tiene premio. ¡Si eres desarrollador no esperes más! ______________________________________________ R-help@r-project.org mailing list 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.
