image limits

[Daniel J Sebald]

Here's something for you to think about.  I don't think there is any rush to 
resolve this, as gnuplot may tweak behavior on images slightly (hence labeled 
experimental in gnuplot's configuration).  But, if one tries (in CVS) image, 
the outermost pixels are fractionally displayed by the automatic choice of 
limits.  To exaggerate, try

image([4 5 6; 7 8 9; 0 1 2])

The array is 3x3 and the limits are chosen as [1:3], which only covers the 
length of two pixels.

Like I say, gnuplot may be adjusted if there is a discussion about any accepted 
conventions in the graphics community (i.e., start image at zero, etc.).

Dan