[Octave-bug-tracker] [bug #55483] Matlab uses different algorithm for determining ticklength in 3-D than Octave

[Rik]

URL:
  <https://savannah.gnu.org/bugs/?55483>

                 Summary: Matlab uses different algorithm for determining
ticklength in 3-D than Octave
                 Project: GNU Octave
            Submitted by: rik5
            Submitted on: Tue 15 Jan 2019 04:17:42 PM PST
                Category: Plotting
                Severity: 1 - Wish
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: Confirmed
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

According to Matlab, the ticklength in 3-D is determined by the second matrix
element of the "ticklength" property multiplied by the largest X, Y, or Z-axis
linear dimension.  First, Octave does not use the length of the drawn axes to
determine ticklength, but rather the size of the axes object as returned in
the "position" property entries 3:4 which correspond to width and height. 
Second, as a 3-D plot is rotated the linear dimension of each axis will change
which will also change the ticklength.  

A useful visual hack is to take 76% of the value calculated by Octave as the
ticklength.  This produces less "chunky" ticks in 3-D.  Until someone finds it
worthwhile to implement Matlab's algorithm, this should be good enough.




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