Re: [R] Replacing values in a dataframe depending on several conditions

2013-05-10 Thread Berend Hasselman
On 10-05-2013, at 10:59, KatrinH Heimann wrote: > Dear all, > > I would like to replace some values in a dataframe (including the columns > Action, Interval and Artificiality) depending on a combination of different > conditions > > the command I tried is > > for (j in 1:nrow(data)) > > { >

Re: [R] Replacing values in a dataframe depending on several conditions

2013-05-10 Thread Berend Hasselman
On 10-05-2013, at 10:59, KatrinH Heimann wrote: > Dear all, > > I would like to replace some values in a dataframe (including the columns > Action, Interval and Artificiality) depending on a combination of different > conditions > > the command I tried is > > for (j in 1:nrow(data)) > > { >

[R] Replacing values in a dataframe depending on several conditions

2013-05-10 Thread KatrinH Heimann
Dear all, I would like to replace some values in a dataframe (including the columns Action, Interval and Artificiality) depending on a combination of different conditions the command I tried is for (j in 1:nrow(data)) { if ((data[j,data$Action]=="s") & (data[j,data$Interval]=="l") & (data[j,da