Hi Matt,
On Mon, Dec 14, 2009 at 5:49 AM, Bunny, lautloscrew.com
bu...@lautloscrew.com wrote:
Dear all,
i have a programming problem that should be simple, though i am stuck with
it. Please note that this is not a specific geonames problem, though i use it
as an example - it愀 just a basic problem with lapply.
I use the geonames webservices with the R geonames packages which works
almost smoothly.
I have a vector of Zipcodes and i want to do a geonames lookup for all of
them, which should not be a problem.
Of course i could create a loop for that one, but i think lapply should be
possible, too.
The problem is to hand over the variable to the lookup function.
lapply(zipcodes,GNpostalCodeLookup(postalcode=zipcodes,country=US))
where zipcodes is my vector of zip codes an GNpostalCodeLookup is the
function that gives back some information like longitude and aptitude etc. Is
it possible to use lapply in that context or can I just use it in contexts
like lapply(somelistofvectors, mean) ?
all i悲 like to have is some data.frame like this
zip apt long
1234 xy.x xx.x
1235 ax.x aa.a
I am not sure what aptitude is, but this might help.
Note that this is a reproducible example.
library(geonames)
# make fake dataframe
z.df - data.frame(zip = c(28607, 28608, 28609),country = c('US','US','US'))
# add longitude to dataframe
z.df$long=apply(z.df,1,function(l){GNpostalCodeLookup(postalcode =
l[1], country = l[2])$lng})
# add latitude to dateframe
z.df$lat=apply(z.df,1,function(l){GNpostalCodeLookup(postalcode =
l[1], country = l[2])$lat})
I am sure there is a way to get this into one function but this is
what I came up with.
Hope this helps,
Michael
thx in advance
matt
[[alternative HTML version deleted]]
__
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.
--
Michael Denslow
Graduate Student Adjunct Instructor
I.W. Carpenter Jr. Herbarium [BOON]
Department of Biology
Appalachian State University
Boone, North Carolina U.S.A.
-- AND --
Communications Manager
Southeast Regional Network of Expertise and Collections
sernec.org
36.214177, -81.681480 +/- 3103 meters
__
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.
