Hi David, thanks for the clarification.
Irucka
<-----Original Message----->
>From: David Winsemius [dwinsem...@comcast.net]
>Sent: 12/31/2012 12:15:00 PM
>To: iruc...@mail2world.com
>Cc: jorgeivanve...@gmail.com;r-help@r-project.org
>Subject: Re: [R] error when using subset (0 observations)
>
>On Dec 31, 2012, at 3:22 AM, Irucka Embry wrote:
>
>> Hi Jorge, thank-you for the quick response. That suggestion worked
>> perfectly.
>>
>
>> <-----Original Message----->
>>> From: Jorge I Velez [jorgeivanve...@gmail.com]
>>> Sent: 12/31/2012 5:05:14 AM
>>> To: iruc...@mail2world.com
>>> Cc: r-help@r-project.org
>>> Subject: Re: [R] error when using subset (0 observations)
>>>
>>> Dear Irucka,
>>>
>>>
>>> Use "02169570" instead of 02169570 -- note the quotes -- when
calling
>> subset().
>
>Irucka; Please note that subset should allow specification of subset
>using logical tests on numeric variables without using quotes, and
>that Jorge was making an educated guess that you had unwittingly made
>a logical test on a character vector using a numeric comparison.
>
>--
>David.
>
>>>
>>>
>>>
>>>
>>> On Mon, Dec 31, 2012 at 9:45 PM, Irucka Embry <> wrote:
>>>
>>> Hi, how are you?
>>>
>>> My name is Irucka Embry and I would like assistance on properly
>>> subsetting some data obtained from a .csv file.
>>>
>>>> file <-"info_n.csv"
>>>
>>>> INFO<- getMetaDataFromFile(file)
>>> INFO is 92 observations of 14 variables
>>>
>>>> INFO<- subset(INFO,site.no==02169570)
>>> INFO is 0 observations of 14 variables
>>>
>>> When the site.no is used I should have 1 observation of 14 variables
>>> instead of 0. Can you assist me?
>>>
>>> Thank-you.
>>>
>>> Irucka Embry
>>>
>>>
>>> This is the function that is called:
>>> getMetaDataFromFile <- function(file, hasHeader = TRUE, separator =
>> ",")
>>> {
>>> totalPath <- paste(file, sep = "")
>>> tmp <- read.csv(totalPath, header = hasHeader, sep = separator,
>>> fill =
>>> TRUE, comment.char = "#", as.is = TRUE, stringsAsFactors = FALSE,
>>> na.strings = "NA")
>>> retval <- as.data.frame(tmp, stringsAsFactors = FALSE)
>>> return(retval)
>>> }
>>>
>>>
>>> This is an example of the data that is stored in the "info_n.csv"
>>> file.
>>> There are 92 total sites in this file.
>>> site.no flowstation.no shortName dec.lat.va dec.long.va drainSqKm
>>> areaUnits drainSqKmFlow areaUnits staAbbrev param.nm paramShortName
>>> constitAbbrev param.units
>>> 2169570 2169570 Gills Creek at Columbia, SC 33.98960016 -80.97425727
>>> 152.7543752904 2 152.7543752904 2 GillsColumSC Total nitrogen,
water,
>>> unfiltered, milligrams per liter Nitrate as N TN mg/L
______________________________________________
>>> R-help@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>
>David Winsemius, MD
>Alameda, CA, USA
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