search for: preuth

Hello, I want to select in a column of a dataframe all numbers smaller than a value x but when I type in test<-(RSF_EU$AREA<=x) I receiv as answer: > test [1] TRUE FALSE FALSE TRUE TRUE TRUE FALSE FALSE TRUE TRUE TRUE FALSE TRUE TRUE TRUE TRUE TRUE [18] TRUE TRUE TRUE TRUE FALSE FALSE TRUE TRUE TRUE TRUE TRUE TRUE TRUE FALSE TRUE TRUE TRUE [35] FALSE TRUE

delete a entire vector of a dataframe Hello, i want to delete a vector and tried "rm (t.d$V712)". This did not work, message was, could not find variable. I thought the $ defines the vectro in a dataframe, when I just type "t.d$V712" the content of this vector is displayed. Greetings, Thomas

Hello, I`m a newbie to R so maybe this question is boring, but I have a large table with several empty missing values, which come out as "NA". How can i ignore them or replace them by another number? Greetings, Thomas

Hello, i have a problem with creating histograms and plots under ubuntu linux. After creating a vector "test" i want to make a histogram, but the following error appears: > hist (test) Error in X11() : could not find any X11 fonts Check that the Font Path is correct. Does anybody know this problem and a solution for this? Thanks in advance, Thomas