Before using the CircSpatial function CircDataimage, install the current version of Active State TCL from http://downloads.activestate.com/ActiveTcl/Windows/.  This installation is required to use the Tcl command img to embed jpeg graphics in the tcltk GUI generated by function CircDataimage.

Before entering CircDataimage, update the input following consistent with your installation of Active State TCL.  Then, enter the following commands from the R prompt:

require(tcltk, quietly=TRUE, warn.conflicts=TRUE)
Sys.setenv("TCL_LIBRARY"="C:/Tcl/lib/tcl8.5")
Sys.setenv("MY_TCLTK"="Yes")
addTclPath(path = "C:/Tcl/lib/teapot/package/win32-ix86/lib")
tclRequire("img::jpeg")