Re: [R] is there a way to read a specific column from a txt file

On Sun, May 3, 2009 at 6:36 PM, Wensui Liu wrote: > Sometimes, it is too costly to read the whole data file into R. > I am looking for solution in scan() and read.Lines() but don't they work. Try the following (assuming a 3 columns data file): mydata <- read.table(file="myfile",header=T,colClass

Re: [R] is there a way to read a specific column from a txt file

The sqldf package can read in a column without reading the entire file into R. It will automatically set up a database for you read the file into the database (all this without going through R) and then it will extract the column you want. You will need two statements. One to define which file to

[R] is there a way to read a specific column from a txt file

Sometimes, it is too costly to read the whole data file into R. I am looking for solution in scan() and read.Lines() but don't they work. Thank you so much! -- == WenSui Liu Acquisition Risk, Chase Blog : statcompute.spaces.live.com Tough Times Never Last. But Tough