Thanks for your answer.

I have since found that 

$canvas4->yview('moveto', (.09));  # where a fraction 0 to 1 is used t
+o position the cursor

[download]

works nicely to do what I want.

I write in linux but the sailing club I write for uses ms windows so I compile it in XP in Virtualbox where the version of Perl requires &subname()

Also for my $i(0..100) {$results[$i] = 2*$i;} is not in the original code. That was just to use in the small demo.

See https://www.youtube.com/watch?v=ezNxXLDAPVY if interested.

2017-10-07 Athanasius added code tags and linkified the web address

In reply to Re^2: Tkx scrolling by nitep70
in thread Tkx scrolling by nitep70

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