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> 
> library('mapmisc')
Loading required package: terra
terra 1.7.71
map images will be cached in  D:\temp\RtmpIvgmnG/mapmiscCache
> data('netherlands')
> 
> nldCities = unwrap(nldCities)
> 
> 
> x=nldCities
> xbox = as.polygons(ext(nldCities), crs = crs(nldCities))
> 
> bob=function(angle, ...){
+   y = project(x, omerc(x, angle, ellipse=FALSE, ...))
+   nld2 = project(xbox, crs(y))
+   map.new(nld2)
+   abline(v=0, col='grey')
+   abline(h=0, col='grey')
+   plot(nld2,add=TRUE, lwd=2, lty=3)
+   plot(ext(y), add=TRUE, col='orange')
+   plot(y,cex=0.2, col='red',add=TRUE)
+   text(y,labels=y$name, cex=0.5, col=col2html('blue',0.4))
+    mtext(paste(angle,collapse=' '),side=3,outer=FALSE,line=-1)
+    scaleBar(y,'topright')
+    return(invisible(crs(y)))
+   
+  }
> 
> 
> 
> if(!interactive()) pdf("omerc.pdf")
> 
>   par(mfrow=c(3,3))
> 
> 
>   	bob(0)
>   
>   bob(89)
>   
>   bob(45)
>   
>   bob(-45)
> 
>   bob(180-45)
> 
>   
>   bob(-180-45, post=-45)
>   
>   bob(45, post='north')
>   bob(45, post='wide')
>   bob(45, post='tall')
>   
>   
> 
> 
> par(mfrow=c(3,2))
>   bob((-10):10)
>   
>   bob(seq(-170,-190))
>   
>   bob((-10):10, post='north')
>   bob((-10):10, post='wide')
>   bob((-10):10, post='long')
>   
>   bob((-10):10, post=90)
> 
> N = 12
> somePoints = vect(
+     cbind(runif(N,-5,40), runif(N,40,70)),
+     atts=data.frame(name=1:N),
+     crs=crsLL
+     )
>     x=somePoints
>     xbox = as.polygons(ext(somePoints), crs(somePoints))
>  
>   par(mfrow=c(3,2))
>   
>   
>   bob((-10):10, preserve=x, post=10)
>   bob((-10):10, preserve=x, post='none')
>   
>   bob(seq(-170,-190), preserve=x)
>   
>   scaleBar(bob((-10):10, preserve=x, post='north'), c(0,0), seg.len=0)
> 
>   
>   scaleBar(bob((-10):10, preserve=x, post='tall'), c(0,0), seg.len=0)
>   
>   scaleBar(bob((-10):10, preserve=x, post='wide'), c(0,0), seg.len=0)
>   
> 
> if(!interactive())   dev.off()
null device 
          1 
> 
> 
> proc.time()
   user  system elapsed 
  14.50    0.65   15.14