gridding: differences of 4.2 and 4.4

[Petr M. <mi...@ph...>]

An anonymous user "r/e-letter/inpost" reported different outputs of gnuplot 
from OpenSUSE and 4.4. Well it seems that the 3rd parameter of the gridding 
method changed between 4.2 and 4.4.

Try any 4.2.x and 4.4 and these examples:

set dgrid3d ,,1; show dgrid; splot '3.dat' with line
set dgrid3d ,,8; show dgrid; splot '3.dat' with line

3.dat:
1 1 1
1 2 2
1 3 3

2 1 2
2 2 2
2 3 2

3 1 3
3 2 2
3 3 1


There is yet another error in 4.4 -- the following command fails:
m=5; n=8; set dgrid3d m,m,n

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PM