tooltips or annotation

Here is a minimalistic example (adapted demo)

cities <- readOGR(system.file("vectors", package = "rgdal")[1], "cities")
is.na(cities$POPULATION) <- cities$POPULATION == -99
summary(cities$POPULATION)
td <- "."
writeOGR(cities, td, "cities", driver="ESRI Shapefile") # this works
writeOGR(cities, td, "cities", driver="GeoJSON") # this fails



writing ESRI Shapefile works, but writing GeoJSON files fails.


I installed the current version of GDAL from
http://www.kyngchaos.com/software/frameworks <http://www.kyngchaos.com/software/frameworks>
and the I installed rgdal from source.
I also tried this with rgdal installed from mercenaries on CRAN.

The problem seems to the the GeoJSON driver.

On 15 Jun 2015, at 01:14, boB Rudis <bob at rudis.net> wrote:

All you have to do is upgrade GDAL and re-install rgdal. I have the
same system & R versions and I use this all the time.

On Sun, Jun 14, 2015 at 5:30 PM, Erich Subscriptions
<erich.subs at neuwirth.priv.at> wrote:

Alas,
this does not work on my setup:
OSX 10.10.3  R 3.2.0

rgdal 0.9-3 produces an error when I try to use
writeOGR

I am not the only one experiencing this, see e,g,

http://r-sig-geo.2731867.n2.nabble.com/GeoJSON-errors-when-reading-writing-with-rgdal-td7586801.html