Hi

>

> [R] Problem with converting factors to numbers

>

> Hi all,

> I have a very simple problem, but i cant find a solution probably

because i

> search for the wrong keywords.

>

> I have coordinates x and y. They look like this:

>

> > str(data)

> 'data.frame': 13979 obs. of 2 variables:

> $ x : Factor w/ 3815 levels "","186011.4971280",..: 1528

1524

> 1524 1524 1524 ...

> $ y : Factor w/ 3792 levels "","449372.9599780",..: 1333

1116

> 1116 1116 1116 ...

>

>

> > data$x[1:10]

> [1] 186843.8131840 186842.6156650 186842.6156650 186842.6156650

> 186842.6156650 186842.6156650 186842.6156650 186842.6156650

> [9] 186842.6156650 186842.6156650

> 3815 Levels: 186011.4971280 186021.0356270 186048.6246680

186051.3570180

> 186052.7204140 186052.9162970 ... 188132.9056840

>

>

> I want them in *numbers*, so i run:

> data$x2 <- as.numeric(data$x)

>

> But what it did is this:

> > data$x2[1:10]

> [1] 1528 1524 1524 1524 1524 1524 1524 1524 1524 1524

>

> I tried converting it via character and then to numeric, but also that

didnt

> work.

It shall work. However nobody knows how did you apply converting via

character and numeric until you post the code you actually used.

>From str it seems to me that either your data are from beginning non

numeric or you have some non numeric characters in your input data.

Regards

Petr

>

> Anyone ideas?

>

>

>

>

>

>

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https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide

http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.