On Fri, Aug 21, 2009 at 8:53 PM, Thomas Holder<thomas@thomas-holder.de> wrote:

how to redefine the altitude point symbol? Defining a metapost p_altitude macro within layout/endlayout has no effect.

All point labels are displayed using p_label; altitude uses mode=1. Martin --- vardef p_label@#(expr txt,pos,rot,mode) = if (mode=1) or (mode=7): interim labeloffset:=(u/8) fi; lab:=thelabel@#(txt, pos); if mode>1: pickup PenD fi; if mode=1: pickup pencircle scaled (u/6); drawdot(pos); process_label(pos,0); elseif mode=2: process_uplabel; elseif mode=3: process_downlabel; elseif mode=4: process_updownlabel; elseif mode=5: process_circledlabel; elseif mode=6: process_boxedlabel; elseif mode=7: process_label(pos,rot); % station name elseif mode=8: process_filledlabel(pos, rot); else: process_label(pos,rot); fi; enddef;