[Octave-bug-tracker] [bug #37410] image.m has a wrong check for linearly-spaced x and y

[Francesco Potortì]

URL:
  <http://savannah.gnu.org/bugs/?37410>

                 Summary: image.m has a wrong check for linearly-spaced x and
y
                 Project: GNU Octave
            Submitted by: pot
            Submitted on: Thu 20 Sep 2012 01:44:33 PM CEST
                Category: Libraries
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.6.2
        Operating System: GNU/Linux

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Details:

The check in image.m is

dx = diff (x);
dx = std (dx) / mean (abs (dx));
tol = 100*eps;
if (any (dx > tol))
  warning

but this is too strict.

I stumbled upon it with x=linspace(0,10.43,743);

I suggest to set 

tol = 100*rows(x);





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