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This chart was created with R.

Camera location	48° 14′ 12″ N, 16° 22′ 10″ E	View this and other nearby images on: OpenStreetMap	48.236667; 16.369444

R source code:

#gibt winkel der kugelkoordinaten zurück
coord2angle=function(coord) {
  diag=sqrt(coord[,1]^2+coord[,2]^2)
  psi=acos(coord[,1]/diag)
  psi[ ((coord[,1]>0)&(coord[,2]>0)) ] = -psi[ ((coord[,1]>0)&(coord[,2]>0)) ]
  phi=pi/2-atan(coord[,3]/diag)
  #phi[coord[,3]<0]=NA
  #psi[coord[,3]<0]=NA
  return( cbind(pi/2+psi, pi/2-phi) )
}

#gibt für einen zeitpunkt die koordinaten des stundenpunktes auf der ellipse zurück
anastundenskala=function(stunde,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA) {
  #TOOD: berechne frühesten sonnenauf- und spätesten sonnenuntergang
  ko=coords(t=4.545,S=stunde,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA,ignore=T) #datum ist 2.95, einfach so? längster tag!?... kein analemma!
  #an welchem tag ist 6h genau im osten?! dieses datum hier einsetzen!!!
  ang=coord2angle(ko)
  x=-sin(ang[,1])
  y=-sqrt(sin(phi)^2*(1-x^2))*sign(ko[,2])
  #x=-sin(ang[,1])
  #y=-sqrt(sin(phi)^2*(1-x^2))*sign(ko[,2])
  return( cbind(x,y) )
}

hoehenwinkel=function(datum,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA){ 
  ko=coords(t=datum,S=12,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA,ignore=T) #TODO: warum 12 mittags?!
  ang=coord2angle(ko)
  return( ang[,2] )
}

#für die analemmatische die markierung des datums
datumsmarkierung=function(datum,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA){
  alpha=hoehenwinkel(datum,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA)
  x=tan(alpha-pi/2+phi)
  return( x*cos(phi) )
}

lim=limits(RICHT=RICHT)
lim$xlim=c(-2.7,2.7)
lim$ylim=c(-2.7,2.7)
############################## wie im alten
if (OUT=="pdf") {
  CairoPDF(paste("sundial-",RICHT,"_",10*DIST,".pdf",sep=""),width=(DIST*(lim$xli[2]-lim$xli[1])+2)/2.54, height=(DIST* (lim$yli[2]-lim$yli[1])+2)/2.54, title=paste("Annalematische Sonnenuhr in",location))
} else if (OUT=="png") {
  CairoPNG(paste("sundial-",RICHT,"_",10*DIST,".png",sep=""),width=round(1200*sqrt(2)), height=1200)
}
par( mai=c(1,1,1,1)/2.54 )
#plot(c(-4.8,0.7),c(-5.3,0.2),type="n",xaxs="i",yaxs="i",xlim=lim$xli,ylim=lim$yli,asp=1,xaxt="n",yaxt="n",bty="n",ann=F)
##############################

plot(0,0,xlim=c(-1.1,1.1),ylim=c(-1.1,1.1),asp=1,xaxt="n",yaxt="n",type="n",bty="n",ann=F) 

stunden=seq(0,24,length=200)
sk=anastundenskala(stunden,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA)
lines(sk,col="gray")
stunden=seq(0,23,by=1)
sk=anastundenskala(stunden,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA)
lines(sk,type="p",col="blue",lwd=2)
text(sk[,1],sk[,2],stunden,col="skyblue",adj=c(1,0)) 

abline(h=0,v=0,col="lightgray") 

#180/pi*hoehenwinkel(seq(0,2*pi,length=12),phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA)
jaz=cumsum(c(0,31,28,31,30,31,30,31,31,30,31,30))/365*2*pi #eine linie pro monat
dm=datumsmarkierung(jaz,phi=phi,lambda=lambda,KAPPA=KAPPA,EPSILON=EPSILON,ALPHA=ALPHA)
text(0,dm[1:6],angle2date(jaz[1:6]),adj=1.1,col="blue",cex=0.8)
text(0,dm[7:12],angle2date(jaz[7:12]),adj=-0.1,col="blue",cex=0.8)
lines(rep(0,length(dm)),dm,type="b",col="blue")

text(0.66,-0.12,paste(location,",\n",round(lambda*180/pi,3),"° n.Br.\n",round(phi*180/pi,3),"°ö.L.\n","MESZ",sep=""),cex=0.75,col="orange")

if (OUT=="pdf" | OUT=="png" | OUT=="jpg") {
  dev.off()
}