[R] Reading two-cloumn CSV file into a hash table

[Gabor Grothendieck]

On Mon, Sep 26, 2011 at 4:16 PM, Khanvilkar, Shashank
<skhanvil at qualcomm.com> wrote:
> Sending it again, with correct subject line.
>
>
> Hello All,
> Thanks in advance for all help,
>
> I am trying to read a two column csv file in R, which looks like:
> X,1
> Y,2
> Z,3
>
> I am using R commands:
> tmp = read.csv("test.csv", colClasses=c("character", "character"))
>
> How can make this into a hash table, so that I can access, tmp["X"] and it will return me "1"?
>

Try this:

Lines <- "letters,numbers
X,1
Y,2
Z,3"
cat(Lines, "\n", file = "data.txt")
DF <- read.csv("data.txt")
v <- setNames(DF[,2], DF[,1])

so:

> v[["Y"]]
[1] 2


-- 
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com