Hi,
I have a problem with function match. I might not be using it properly?
I have two character vectors that contain a unique identifier:
gtype_prochi <- ("CAO1524452" "CAO0966182" "CAO9209719" "CAO4436178"
"CAO3761898"
"CAO3529266" "CAO2427148" "CAO8829776" "CAO2517174" "CAO5371418"
"CAO1535943" "CAO1782827" "CAO5048528" "CAO3355531" "CAO6972025"
"CAO5424346" "CAO2487177" "CAO6958863" "CAO4966402" "CAO1542471"
"CAO3651581" "CAO8066673" "CAO7038589" "CAO9396088" "CAO3970255"
"CAO9748084" "CAO0134895" "CAO4402488" "CAO2611552" "CAO5076137"
"CAO6765658" "CAO5210145" "CAO7322401" "CAO3123811" "CAO3866028"
"CAO8481324" "CAO2046484" "CAO1461245" "CAO0421700" "CAO4584012"
"CAO0194083" "CAO2395689" "CAO9560781" "CAO3950951" "CAO7950101"
"CAO5175707" "CAO4392323" "CAO9684919" "CAO8919826" "CAO6685513")
and
merge_prochi <- ("CAO0001743" "CAO0003129" "CAO0004563" "CAO0018045"
"CAO0034220"
"CAO0034275" "CAO0039712" "CAO0045125" "CAO0048575" "CAO0055131"
"CAO0056636" "CAO0075804" "CAO0076632" "CAO0083069" "CAO0103166"
"CAO0109559" "CAO0113512" "CAO0114087" "CAO0122832" "CAO0143034"
"CAO0153344" "CAO0164033" "CAO0167974" "CAO0172899" "CAO0182089"
"CAO0183227" "CAO0200685" "CAO0212229" "CAO0226616" "CAO0236387"
"CAO0241649" "CAO0242493" "CAO0251018" "CAO0253877" "CAO0259290"
"CAO0261913" "CAO0263615" "CAO0267251" "CAO0279172" "CAO0279713"
"CAO0286825" "CAO0287077" "CAO0295190" "CAO0312448" "CAO0319405"
"CAO0337134" "CAO0347741" "CAO0367128" "CAO0374110" "CAO0374779")
I have used the following:
test_match <- match(merge_prochi, gtype_prochi, nomatch=0,
incomparables=NULL)
test_match <- (1620 3161 NA 2191 1957 NA 422 1040 1031 NA NA NA
NA NA NA
NA 1956 NA NA NA NA NA NA 586 NA NA 182 NA 3234 NA
NA NA NA NA NA NA 3075 556 1794 1451 NA 1991 1791 NA 992
1424 NA 764 NA NA)
is the ouput. What I'm trying to do is compare two columns between two data
frames to look for common prochi numbers. I then want to use these common
prochi numbers to subset another data frame. I'm not sure if I am using the
correct thing or doing it the right way.
Thanks,
Natalie
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