Getting header names in R and playing with csv files

names(myTable)

a<-read.csv("file.csv", header=T, sep=",")
names(a)
motility<-subset(a, Putative.orf.function=="Motility & Attachment")
write.csv(motolity, file="motility.csv")

Edit Feb 15th 2012

grep("Motility", a$Putative.orf.function)

gives the list of rows whose Putative.orf.function column contains the string "Motility".

Using this, one can get the entire row information.

df<-read.csv("file.csv", header=T, sep=",")

names(df)

 > names(df)
 [1] "Strain.Name"           "ID"                    "Location"             
 [4] "PA.ORF"                "Gene"                  "Gene.Abbrev."         
 [7] "Putative.orf.function" "Position.in.ORF"       "Frame"                
[10] "Genome.Position"       "Transposon.Direction"  "Transposon"           
[13] "F.Primer.Name"         "F.Primer.Seq"          "F.Primer.Position"    
[16] "F.Primer.Tm"           "Insert...F"            "R.Primer.Name"        
[19] "R.Primer.Seq"          "R.Primer.Position"     "R.Primer.Tm"          
[22] "R...Insert"            "WT.PCR.Len"            "Confirmed."           
[25] "How.confirmed."        "Notes"                
> df$Strain.Name[grep("Attachment",df$Putative.orf.function)]
  [1] PW10299 PW10300 PW1728  PW1729  PW1730  PW1731  PW1749  PW1750  PW1751 
 [10] PW1752  PW1753  PW1754  PW1755  PW1756  PW1757  PW2791  PW2792  PW2794 
 [19] PW2795  PW2941  PW2942  PW2943  PW2944  PW2945  PW2946  PW2947  PW2948 
...

[118] PW8681  PW8682  PW9465  PW9466  PW9467  PW9468  PW9469  PW9470  PW9471 
[127] PW9472  PW9473  PW9474