From: Douglas Bates <bates_at_stat.wisc.edu>

Date: Fri 06 May 2005 - 22:48:32 EST

>> Thank you all for your (fast) comments.

*>>
*

*>> Unfortunately I could not make the advise work:
*

*>>
*

*>>> mass
*

*>>
*

*>> [1] 800 800 800 800 800 800 800 800 800 800 800
*

*>> 800 800 800 800 800 800 800 910 910 910 910 910
*

*>> 910 910
*

*>> [26] 910 910 910 910 910 910 910 910 910 910 910
*

*>> 910 910 910 1,020 1,020 1,020 1,020 1,020 1,020 1,020 1,020 1,020
*

*>> 1,020 1,020
*

*>> [51] 1,020 1,020 1,020 1,020 1,020 1,020 1,020 1,130 1,130 1,130 1,130
*

*>> 1,130 1,130 1,130 1,130 1,130 1,130 1,130 1,130 1,130 1,130 1,130 1,130
*

*>> 1,130 1,130
*

*>> [76] 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250
*

*>> 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250 1,250
*

*>> 1,250 1,250
*

*>> [101] 1,250 1,250 1,250 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360
*

*>> 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360
*

*>> 1,360 1,360
*

*>> [126] 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360
*

*>> 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360 1,360
*

*>> 1,360 1,360
*

*>> [151] 1,360 1,360 1,360 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470
*

*>> 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470
*

*>> 1,470 1,470
*

*>> [176] 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470
*

*>> 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470 1,470
*

*>> 1,470 1,470
*

*>> [201] 1,470 1,470 1,470 1,590 1,590 1,590 1,590 1,590 1,590 1,590 1,590
*

*>> 1,590 1,590 1,590 1,590 1,590 1,590 1,590 1,590 1,590 1,590 1,590 1,590
*

*>> 1,590 1,810
*

*>> [226] 1,810 1,810 1,810 1,810 1,810 1,810 1,810 1,810 1,810 1,810 1,810
*

*>> 1,810
*

*>> Levels: 1,020 1,130 1,250 1,360 1,470 1,590 1,810 800 910
*

*>>
*

*>>> str(mass)
*

*>>
*

*>> Factor w/ 9 levels "1,020","1,130",..: 8 8 8 8 8 8 8 8 8 8 ...
*

*>>
*

*>>> as.numeric(as.character(mass))
*

*>>
*

*>> [1] 800 800 800 800 800 800 800 800 800 800 800 800 800 800 800 800
*

*>> 800 800 910 910 910 910 910 910 910 910 910 910 910 910 910 910 910 910
*

*>> 910 910 910 910
*

*>> [39] 910 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [77] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [115] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [153] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [191] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [229] NA NA NA NA NA NA NA NA NA
*

*>> Warning message:
*

*>> NAs introduced by coercion
*

*>>
*

*>>> as.numeric(levels(mass))[as.integer(mass)]
*

*>>
*

*>> [1] 800 800 800 800 800 800 800 800 800 800 800 800 800 800 800 800
*

*>> 800 800 910 910 910 910 910 910 910 910 910 910 910 910 910 910 910 910
*

*>> 910 910 910 910
*

*>> [39] 910 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [77] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [115] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [153] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [191] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
*

*>> NA NA NA NA
*

*>> [229] NA NA NA NA NA NA NA NA NA
*

*>> Warning message:
*

*>> NAs introduced by coercion
*

*>>
*

*>>> var.matrix$mass <- numeric(var.matrix$mass)
*

*>>
*

*>> Error in "$<-.data.frame"(`*tmp*`, "mass", value = c(0, 0, 0, 0, 0, 0,
*

*>> :
*

*>> replacement has 8 rows, data has 237
*

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri May 06 22:58:05 2005

Date: Fri 06 May 2005 - 22:48:32 EST

Dimitris Rizopoulos wrote:

> I presume that in the place of "1,020" you need "1.02".

In this context I believe that "1,020" means "1020" in which case the gsub call could be as.numeric(gsub(",", "", levels(mass)))[mass]

> Then use > something like this: > > mass <- factor(c("800", "1,020", "1,130", "1,250")) > as.numeric(gsub(",", ".", as.character(mass))) > > I hope it helps. > > Best, > Dimitris > > ---- > Dimitris Rizopoulos > Ph.D. Student > Biostatistical Centre > School of Public Health > Catholic University of Leuven > > Address: Kapucijnenvoer 35, Leuven, Belgium > Tel: +32/16/336899 > Fax: +32/16/337015 > Web: http://www.med.kuleuven.ac.be/biostat/ > http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm > > > ----- Original Message ----- From: "Smit, R. (Robin) (IenT)" > <robin.smit@tno.nl> > To: <r-help@stat.math.ethz.ch> > Sent: Friday, May 06, 2005 2:17 PM > Subject: [R] conversion factor into numeric > >

>> Thank you all for your (fast) comments.

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri May 06 22:58:05 2005

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