[R] counting occurrence of text in a dataframe
iaingallagher at btopenworld.com
Sat May 23 14:44:19 CEST 2009
I am hoping for some help with a relatively simple problem. I have a data frame arranged as below. I want to be able to count the occurrence of each gene (eg let-7e) by Experiment. In other words how many times does a given gene crop up in the dataframe. I tried table but couldn't work out how to get the output I want. I have also considered rearranging this data into a list (by gene) and then counting the length of each gene element. However I thought that there might be a more elegant solution.
Tanaka Mitchell Wang Hunter Chen Chim
miR-191* let-7e let-7b miR-126 let-7a let-7g
miR-198 let-7f let-7c miR-146a let-7b let-7i
miR-22 let-7g miR-1224 miR-16 let-7d miR-130b
miR-223 let-7i miR-124 miR-191 let-7f miR-133a
miR-296 let7fG15A miR-125a-3pmiR-222 let-7g miR-140
miR-30d miR-101 miR-125b-5pmiR-223 let-7i miR-142-5p
miR-370 miR-103 miR-133a miR-24 miR-101 miR-146
miR-486 miR-125a-5pmiR-133b miR-26a miR-103 miR-148a
miR-498 miR-126 miR-135a* miR-32 miR-106a miR-152
Thanks for any advice.
More information about the R-help