[R] help_ReverseGeocoding

[shreya ghosh]

Thank you for your suggestion. Is there any open source api that won't
rate-limit it?



On Tue, Jul 28, 2015 at 9:38 PM, boB Rudis <bob at rudis.net> wrote:

> You should use ggmap::revgeocode (it calls google's api) and google
> will rate-limit you. There are also packages to use HERE maps
> geo/revgeo lookups
>
> http://blog.corynissen.com/2014/10/making-r-package-to-use-here-geocode-api.html
> and the geocode package has GNfindNearestAddress, so tons of options
> to choose from.
>
> On Tue, Jul 28, 2015 at 11:30 AM, MacQueen, Don <macqueen1 at llnl.gov>
> wrote:
> > My first guess, after a quick glance, is that Google only lets you do a
> > limited number of lookups within some period of time.
> >
> > -Don
> >
> > --
> > Don MacQueen
> >
> > Lawrence Livermore National Laboratory
> > 7000 East Ave., L-627
> > Livermore, CA 94550
> > 925-423-1062
> >
> >
> >
> >
> >
> > On 7/27/15, 10:14 PM, "R-help on behalf of shreya ghosh"
> > <r-help-bounces at r-project.org on behalf of shreya.cst at gmail.com> wrote:
> >
> >>Hi,
> >>I'm trying to do reversegeocoding on a large dataset. I'm using "RJSONIO"
> >>library and using Google map API to get the location of the given lat-lon
> >>in the dataset. After 100 or 150 successful displaying location
> >>information
> >>it is showing
> >> Warning message - "In readLines(con) : cannot open: HTTP status was '0
> >>(null)'"
> >>and Error : "Error in fromJSON(paste(readLines(con), collapse = "")) :
> >>  error in evaluating the argument 'content' in selecting a method for
> >>function 'fromJSON': Error in readLines(con) : cannot open the
> connection"
> >>
> >>Please help me to solve the issue.
> >>
> >>location function is as follows :
> >>
> >>location<-function(latlng){
> >> latlngStr <-  gsub(' ','%20', paste(latlng, collapse=","))
> >>  library("RJSONIO") #Load Library
> >>  #Open Connection
> >>  connectStr <- paste('
> >>http://maps.google.com/maps/api/geocode/json?sensor=false&latlng=
> ',latlngS
> >>tr,
> >>sep="")
> >>  con <- url(connectStr)
> >>  data.json <- fromJSON(paste(readLines(con), collapse=""))
> >>  close(con)
> >>
> >>  data.json <- unlist(data.json)
> >>  if(data.json["status"]=="OK")
> >>    address <- data.json["results.formatted_address"]
> >>  print (address)
> >>}
> >>
> >>I'm using R version 3.2.1 and Ubuntu 14.10 OS.
> >>
> >>Thank you.
> >>
> >>
> >>
> >>--
> >>
> >>Shreya Ghosh
> >>
> >>*9007448845*
> >>
> >>-- The mind is not a vessel to be filled, but a fire to be kindled
> >>
> >>       [[alternative HTML version deleted]]
> >>
> >>______________________________________________
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> >>and provide commented, minimal, self-contained, reproducible code.
> >
> > ______________________________________________
> > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>



-- 

Shreya Ghosh

*9007448845*

-- The mind is not a vessel to be filled, but a fire to be kindled

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