[Octave-bug-tracker] [bug #51738] bug in montage function

[Tyson Whitehead]

URL:
  <http://savannah.gnu.org/bugs/?51738>

                 Summary: bug in montage function
                 Project: GNU Octave
            Submitted by: twhitehead
            Submitted on: Sat 12 Aug 2017 03:09:55 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.1
        Operating System: GNU/Linux

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Details:

Running the montage function on a series of greyscale images returns the
following error

octave> montage({"grey1.png","grey2.png"})

error: montage: A(I): index out of bounds; value 2 out of bound 1
error: called from
    montage at line 146 column 39

The culprit line 146 is

[images(:,:,:,page_range), map] = imread (img_info(idx).Filename, 1:nPages);  
                  


and it looks to me like it should be

[images(:,:,:,page_range), map] = imread (img_info.Filename, 1:nPages);       
             

as img_info is the current image according to the earlier line

img_info   = infos{idx};                                                      
                    

Cheers!  -Tyson

PS:  The earlier check on line 144

if (size (images, 3) == 1 || all (strcmp {img_info(:).ColorType},
"truecolor")))                  

also looks suspect to me as again img_info is the current image info and not
the collection of image infos.




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