vectorsSP: Create radius vector data in form of SpatialLinesDataFrame.

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

Description

Create radius vector data in form of SpatialLinesDataFrame based on radius and azimuth.

Usage

vectorsSP(SPDF,
           zcol=1:2,
           maxlength=30000, 
           arrowSize=0.15, 
           arrAng=30  
          )

Arguments

SPDF	object of SpatialPointsDataFrame-class with associated coordinate reference systems and minimum two attributes: radius in meter and azimuth in degrees.
zcol	variable column names, or column numbers after removing spatial coordinates from x@data: 1 refers to the first non-coordinate column. Attribute names or numbers of columns contains radius in meter and azimuth in degrees
maxlength	value for maximum vetor in meter
arrowSize	size of arrow relative to vector size
arrAng	angle of arrow in degrees, 0 no arrow

Value

The function provide SpatialLinesDataFrame based on radius and azimuth, ready to use for plotGoogleMaps or spplot.

Author(s)

Milan Kilibarda [e-mail]

See Also

pieSP, elSPDF, bubbleSP

Examples

# Data preparation
wind<-data.frame( Station=c('Zlatibor' , 'Sjenica' , 
    'Pozega' , 'Kraljevo', 'Kopaonik', 'Kursumlija', 'Krusevac'),
                  Lon=c(19.708418 , 19.999311 , 20.029322,
                  20.724012, 20.776111, 21.279513, 21.307998 ),
                  Lat=c(43.729755 , 43.267913	,43.84859	,
                  43.726812	,43.2725,	43.137053	,43.574188),
                  Temp=c(7,  7,	5,	6,	1,	6,	9),
                  Wind_spd=c(3 , 6,	1	,1,	7	,1	,2),
                  Wind_dir=c(45, 162,  138	,265,	335	,180	,270) )

coordinates(wind)<- ~Lon+Lat
wind@proj4string=CRS('+proj=longlat +datum=WGS84')

wind_vect=vectorsSP(wind,zcol=c('Wind_spd','Wind_dir'))

pal<-colorRampPalette(c( "#CB181D", "#A50F15","#67000D"), space = "Lab")
spplot(wind_vect,'Wind_spd', col.regions=pal(5) )
m=plotGoogleMaps(wind_vect,zcol='Wind_spd', 
      colPalette=pal(5), mapTypeId='ROADMAP',strokeWeight=3)

# plotKML(wind_vect)

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