Re: Subsetting a dataset

2011-06-13 Thread Benjamin Kaplan
On Sun, Jun 12, 2011 at 9:53 PM, Kumar Mainali kpmain...@gmail.com wrote: I have a huge dataset containing millions of rows and several dozen columns in a tab delimited text file.  I need to extract a small subset of rows and only three columns. One of the three columns has two word string with

Re: Subsetting a dataset

2011-06-13 Thread Terry Reedy
On 6/13/2011 12:53 AM, Kumar Mainali wrote: I have a huge dataset containing millions of rows and several dozen columns in a tab delimited text file. I need to extract a small subset of rows and only three columns. One of the three columns has two word string with header “Scientific Name”. The

Re: Subsetting a dataset

2011-06-13 Thread Dan Stromberg
On Sun, Jun 12, 2011 at 9:53 PM, Kumar Mainali kpmain...@gmail.com wrote: I have a huge dataset containing millions of rows and several dozen columns in a tab delimited text file. I need to extract a small subset of rows and only three columns. One of the three columns has two word string

Subsetting a dataset

2011-06-12 Thread Kumar Mainali
I have a huge dataset containing millions of rows and several dozen columns in a tab delimited text file. I need to extract a small subset of rows and only three columns. One of the three columns has two word string with header “Scientific Name”. The other two columns carry numbers for Longitude

Subsetting a dataset

2011-06-12 Thread Kumar Mainali
I have a huge dataset containing millions of rows and several dozen columns in a tab delimited text file. I need to extract a small subset of rows and only three columns. One of the three columns has two word string with header “Scientific Name”. The other two columns carry numbers for Longitude