[R] Searching for keyword values in a text (configuration) file

[Gabor Grothendieck]

Read in data using readLines and replace
= with comma and delete all spaces.
Then reread using read.table and set the
rownames to column 1 removing column 1.

# test data
Lines0 <- "DEVICE = 'PC'
CPU_SPEED = '1999', '233'
"

# if reading from a file then
# replace next line with something like Lines <- readLines("myfile.dat")
Lines <- readLines(textConnection(Lines0))
Lines <- gsub("=", ",", Lines)
Lines <- gsub(" ", "", Lines)
DF <- read.table(textConnection(Lines), sep = ",", fill = TRUE,
	colClasses = "character", header = FALSE)
rownames(DF) <- DF[,1]
DF <- DF[,-1]

DF["CPU_SPEED", 2]





On 9/27/06, Andre Jung <ajung at gfz-potsdam.de> wrote:
> Hi,
>
> I would like to read values from an ASCII text file that contains
> information in the following format:
>
> DEVICE = 'PC'
> CPU_SPEED = '1999', '233'
> ...
>
> It's like a config file.
>
> How can I e.g. get R to read the 2nd value of CPU_SPEED?
> How do I go through text files and search for keywords and their values?
>
> Thanks a lot,
> Andre
>
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