stplotGoogleMaps: Create a plot of spacetime (STDIF,STFDF) data on Google Maps

In plotGoogleMaps: Plot Spatial or Spatio-Temporal Data Over Google Maps

Description

Plot htm output with Google Maps API and a plot of spacetime (STDIF,STFDF) data as a combination of users' data and Google Maps layers. Ready to use as local htm file or into your own website.

Usage

stplotGoogleMaps(SPT,
                           zcol=1,
                           stfilename='spacetime.htm',
                           filename='file',
                           w="100%",
                           h="49.5%",
                           openMap=FALSE,
                           colPalette=NULL,
                           do.bubble=FALSE,
                           at=NULL,
                           bubble= list(max.radius=10000,
                                        key.entries = if(do.bubble)
                                        {quantile(SPT@data[,zcol],(1:5)/5, 
                                        na.rm=T)}else{0},
                                         do.sqrt = TRUE),
                           iconMarker="",
                           ...) 

Arguments

SPT	object of spacetime (STFDF-class, STIDF-class) with associated coordinate reference systems
zcol	variable column name, or column number after removing spatial coordinates from x@data: 1 refers to the first non-coordinate column
filename	string use as prefix to partial files, each time instance
stfilename	the name of the output htm or html file
w	the width of the map for each time instance. Can be in percent or in pixels (px)
h	the height of the map for each time instance. Can be in percent or in pixels (px)
openMap	if TRUE map is browesed by default browser for each time instance
colPalette	colours to be used to fill polygon or colour for the line
do.bubble	if TRUE creates bubble plots
at	values at which colours will change
bubble	list of parameters to be passed to bubble plot. The max.radius value for maximum radius in meter. The key.entries the values that will be plotted in the key; by default the five quantiles min, q.25, median q.75, max. The do.sqrt logical; if TRUE the plotting symbol area (sqrt(diameter)) is proportional to the value of the z-variable; if FALSE, the symbol size (diameter) is proportional to the z-variable
iconMarker	if it is empty string creates default marker icon, link to the image or local image to be used as marker image
...	arguments from plotGoogleMaps

Value

This function returns a html(htm) file ready to use.

Author(s)

Milan Kilibarda <[e-mail]>

See Also

plotGoogleMaps, stfdfGoogleMaps

Examples

## Data preparation
## Point data
## data from plotKML package and plotKML tutorial
#library(plotKML)
#data(HRtemp08)
# HRtemp08$ctime <- as.POSIXct(HRtemp08$DATE, format="%Y-%m-%dT%H:%M:%SZ")
# library(spacetime)
# sp <- SpatialPoints(HRtemp08[,c("Lon","Lat")])
# proj4string(sp) <- CRS("+proj=longlat +datum=WGS84")
# HRtemp08.st <- STIDF(sp, time = HRtemp08$ctime, data = HRtemp08[,c("NAME","TEMP")])
# HRtemp08_jan <- HRtemp08.st[1:500]
#str(HRtemp08_jan)
# plot STDIF
# stplotGoogleMaps(HRtemp08_jan,zcol='TEMP', mapTypeId='ROADMAP',w='49%',h='49%')
# plot STDIF bubble 
# stplotGoogleMaps(HRtemp08_jan,zcol='TEMP',stfilename='HR_temp.html', 
#            mapTypeId='ROADMAP',w='49%',h='49%',  strokeOpacity = 0,
#           do.bubble=T, bubble= list(max.radius=15000,
#           key.entries =quantile(HRtemp08_jan@data[,'TEMP'],(1:5)/5, na.rm=T),
#                  do.sqrt = F) )
#
############################################################################
## STFDF data from spacetime vignette spacetime: Spatio-Temporal Data in R 
#library("maps")
# states.m = map('state', plot=FALSE, fill=TRUE)
# IDs <- sapply(strsplit(states.m$names, ":"), function(x) x[1])
# library("maptools")
#states = map2SpatialPolygons(states.m, IDs=IDs)
#yrs = 1970:1986
#time = as.POSIXct(paste(yrs, "-01-01", sep=""), tz = "GMT")
# library("plm")
#data("Produc")
#Produc.st = STFDF(states[-8], time, Produc[order(Produc[2], Produc[1]),])
#Produc.st@sp@proj4string=CRS('+proj=longlat +datum=WGS84')
#library(RColorBrewer)
#ee= stplotGoogleMaps(Produc.st,zcol='unemp',stfilename='USA.htm',
#   colPalette=brewer.pal(9, "YlOrRd"), mapTypeId='ROADMAP',
#w='49%',h='49%', fillOpacity=0.85)
## without control
# ee= stplotGoogleMaps(Produc.st,zcol='unemp',
#   stfilename='USA2.htm',colPalette=brewer.pal(9, "YlOrRd"), 
# mapTypeId='ROADMAP',w='33%',h='25%', fillOpacity=0.85, control.width=0)                

Example output

Loading required package: sp
Loading required package: spacetime

plotGoogleMaps documentation built on May 2, 2019, 5:45 p.m.