Description Usage Arguments Value Author(s) See Also Examples
Create ellipses in form of SpatialPolygonsDataFrame based on attributes: semi-major axis, semi-minor axis, and orientation in degrees.
1 2 3 | elSPDF(SPDF,
zcol=1:3,
scale_e=10)
|
SPDF |
object of SpatialPointsDataFrame-class with associated coordinate reference systems and minimum three attributes: semi-major axis, semi-minor axis, and orientation in degrees. |
zcol |
variable column names, or column numbers after removing spatial coordinates from x@data: 1 refers to the first non-coordinate column |
scale_e |
scale factor |
The function provide SpatialPolygonsDataFrame of ellipses.
Milan Kilibarda kili@grf.bg.ac.rs
pieSP, elSPDF, bubbleGoogleMaps
1 2 3 4 5 6 7 8 9 10 11 12 | # Data preparation
ell<- data.frame(E=c(7456263,7456489,7456305),N=c(4954146,4952978,4952695),
A=c( 2.96,4.55,7.10),B=c(2.35,2.11,2.29),
teta=c(28.35242,41.04491,38.47216))
coordinates(ell) <- ~E+N
proj4string(ell) <- CRS("+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999
+x_0=7500000 +y_0=0 +ellps=bessel
+towgs84=574.027,170.175,401.545,4.88786,-0.66524,-13.24673,0.99999311067
+units=m")
ellpses<-elSPDF(ell)
spplot(ellpses,"A")
|
Loading required package: sp
Loading required package: spacetime
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.