search for: gc_contents

...4 - 0.5 15 + 0.5 16 - 0.5 17 + 0.5 18 - 0.5 19 + 0.5 20 - 0.5 > And change the sign of the value of the gc_content field if the corresponding dir field is negative. Howver, when I run this through the changedir function, all of the gc_contents become negative. An I misunderstanding how to use the ifelse construct? And in that case, how should I go about doing this in a different way? Thankyou very much in advance for your help, and I hope that my question is not too banal! Karin -- Karin Lagesen, PhD student karin.lagesen at medisin....

I have a data frame that looks like this: > gctablechromonly[1:5,] refseq geometry gccontent X60_origin X60_terminus length kingdom 1 NC_009484 cir 0.6799 1790000 773000 3389227 Bacteria 2 NC_009484 cir 0.6799 1790000 773000 3389227 Bacteria 3 NC_009484 cir 0.6799 1790000 773000 3389227 Bacteria 4 NC_009484 cir 0.6799

Sorry about this one being long, and I apologise beforehand if there is something obvious here that I have missed. I am new to creating my own functions in R, and I am uncertain of how they work. I have a data set that I have read into a data frame: > gctable[1:5,] refseq geometry X60_origin X60_terminus length kingdom 1 NC_009484 cir 1790000 773000 3389227 Bacteria 2