Re: [R] Creating a column based on data in another column

2009-08-12 Thread Mehdi Khan
willsclahanstationcut$wills.vs30<- recode(willsclahanstationcut$area.VSCAT,c("B"=686,"C"= 464,"BC"= 724, "D"=301,"CD"= 372, "D"= 800, "DE"= 1000, "WATER"=0)) where $vs30 is the column I want to create, $area.VSCAT is the column which contains the labels. On Wed, Aug 12, 2009 at 8:46 PM, Mehdi Kh

Re: [R] Creating a column based on data in another column

2009-08-12 Thread Mehdi Khan
Hey guys, I have the same question, except in reverse: if we had letter classifications and wanted to assign numerical values to them (the case I stated previously except the other way around) how would we do that? I am trying to use the recode function in the car package but not having any luck..

Re: [R] Creating a column based on data in another column

2009-07-31 Thread Mehdi Khan
got it, thank you everyone! On Fri, Jul 31, 2009 at 12:04 PM, Mehdi Khan wrote: > hello all, > > I have a data frame and I want to create a column which assigns a letter > based upon the value in another column. The data column has velocities > ranging from 0 to 1000. So for example, for veloc

Re: [R] Creating a column based on data in another column

2009-07-31 Thread Henrique Dallazuanna
Try this: cut(sample(0:1000, 100), breaks = c(0, 300, 600, 900, 1000), labels = c('A', 'B', 'C', 'D')) On Fri, Jul 31, 2009 at 4:04 PM, Mehdi Khan wrote: > hello all, > > I have a data frame and I want to create a column which assigns a letter > based upon the value in another column. The data

Re: [R] Creating a column based on data in another column

2009-07-31 Thread Dimitris Rizopoulos
have a look at ?cut(); for instance, x <- sample(1000, 20, TRUE) x cut(x, c(0, 300, 600, 1000), c("A", "B", "C")) I hope it helps. Best, Dimitris Mehdi Khan wrote: hello all, I have a data frame and I want to create a column which assigns a letter based upon the value in another column.

Re: [R] Creating a column based on data in another column

2009-07-31 Thread Jorge Ivan Velez
Dear Medhi, Take a look at ?cut or ?recode (in the car package). HTH, Jorge On Fri, Jul 31, 2009 at 3:04 PM, Mehdi Khan <> wrote: > hello all, > > I have a data frame and I want to create a column which assigns a letter > based upon the value in another column. The data column has velocities