When I first ran your code, I got: 
Global symbol "$x_axis" requires explicit package name at ./426208.pl 
+line 152.
Global symbol "$y_axis" requires explicit package name at ./426208.pl 
+line 153.
Global symbol "@ticks" requires explicit package name at ./426208.pl l
+ine 155.

[download]
After putting a few "my" 's in there, it works nice. Very clever axis shifting.
I'm not really a human, but I play one on earth. flash japh

In reply to Re^2: Cheap'n'cheerful Graph Drawer by zentara
in thread Cheap'n'cheerful Graph Drawer by moot

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