bwps: Open a postscript device with the color scheme given by...
In geo: Draw and Annotate Maps, Especially Charts of the North Atlantic

Description Usage Arguments Details Value Side Effects See Also Examples

The function starts a postscript device and the arguments are the same as the arguments to postscript (height, width, file, bg etc) . The color scheme is 1 black, 2-155 white to black in even steps.

bwps(...)

...

The arguments to postscript are optional. See help postscript.

<!–explain details here–>

No value returned.

A graphics device is opened (often a file). It must be closed again by dev.off()

postscript, geoplotbwpalette,litir

## Not run: 
bwps(file="map1.ps",height=6,width=5)
geoplot(xlim=c(-28,-10),ylim=c(64,69))
geosymbols(data,z=data$value,circles=0.2,sqrt=T)
geopolygon(island,col="white")# paint white over the symbols
geolines(island) # that are inside the country.  (island)
dev.off()

# same example in a different way.
bwps(file="map1.ps",height=6,width=5,bg="white")
geoplot(xlim=c(-28,-10),ylim=c(64,69))
geosymbols(data,z=data$value,circles=0.2,sqrt=T)
geopolygon(island,col=0)#col 0 is now white
geolines(island) # was transparent earlier
dev.off() 
## End(Not run)