[R] Anyone can help with this question

[Jonathan P Daily]

assuming your data takes the form of

location        latitude        longitude
string  num     num
string2 num     num

try:

sub <- dat[sample.int(length(dat$location), 1000),]
--------------------------------------
Jonathan P. Daily
Technician - USGS Leetown Science Center
11649 Leetown Road
Kearneysville WV, 25430
(304) 724-4480
"Is the room still a room when its empty? Does the room,
 the thing itself have purpose? Or do we, what's the word... imbue it."
     - Jubal Early, Firefly

r-help-bounces at r-project.org wrote on 11/16/2010 12:13:57 PM:

> [image removed] 
> 
> [R] Anyone can help with this question
> 
> Mariana 
> 
> to:
> 
> r-help
> 
> 11/16/2010 02:22 PM
> 
> Sent by:
> 
> r-help-bounces at r-project.org
> 
> 
> Hi there:
> I am a total beginner in R, and I have a simple question:
> I have a table with thousands of lines that represent locations, and two
> columns: latitude and longitude. I need to randomly sample 1000 lines. 
How
> do I do it? I know the command "sample", but it samples elements
> independently, not lines. 
> If there is a better place for me to ask that type of question, please 
let
> me know.
> Thanks a lot,
> Mariana (from Brazil)
> 
> -- 
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