plotKML and time stamp
Juliane, try
xc = round(runif(10,-1,1)+27.2, 2)
yc = round(runif(10,-1,1)+-82.5, 2)
xy = cbind(xc, yc)
tc = Sys.time() + 3600 * (1:10)
df = data.frame(z1 = round(5 + rnorm(10), 2), z2 = 20:29)
library(sp)
xy.sp = SpatialPoints(xy)
proj4string(xy.sp) = CRS("+proj=longlat +datum=WGS84")
library(spacetime)
ST = STIDF(xy.sp, tc, df)
library(plotKML)
plotKML(ST)
see also
vignette(spacetime)
On 09/30/2012 03:39 AM, Struve,Juliane wrote:
Dear list,
After plotting this toy example on Google Earth I would like to add a date/time stamp to it so that the locations will be shown in sequence using the time slider. I am not quite sure how to approach this, can I add a date/time to my spatial points and then submit it to plotKML ? What format does the date/time stamp have to be in to be plotted on Google Earth ?
Many thanks for any suggestions.
Regards,
Juliane
xc = round(runif(10,-1,1)+27.2, 2)
yc = round(runif(10,-1,1)+-82.5, 2)
xy = cbind(xc, yc)
xy.sp = SpatialPoints(xy)
df = data.frame(z1 = round(5 + rnorm(10), 2), z2 = 20:29)
SP.spdf = SpatialPointsDataFrame(xy.sp, df)
plot(SP.spdf)
#add a projection
proj4string(SP.spdf) = CRS("+proj=longlat +datum=WGS84")
plotKML(SP.spdf,kmz = FALSE)
[[alternative HTML version deleted]]
_______________________________________________ R-sig-Geo mailing list R-sig-Geo at r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
Edzer Pebesma Institute for Geoinformatics (ifgi), University of M?nster Weseler Stra?e 253, 48151 M?nster, Germany. Phone: +49 251 8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de http://www.52north.org/geostatistics e.pebesma at wwu.de