Docs: -define identify:stuff

[snibgo]

In http://www.imagemagick.org/script/comma ... php#define , the new defines for "identify:locate=minimum" etc and "identify:limit=N" are not documented. Can they be included, please?

[fmw42]

That is likely because the defines are for convert/magick and not identify/magick identify. See last example at http://www.imagemagick.org/script/identify.php

[snibgo]

Ah, yes, I hadn't found them on the http://www.imagemagick.org/script/identify.php page, but I see it now.

I think it would be helpful if http://www.imagemagick.org/script/comma ... php#define listed all defines recognised by IM.

Those defines also work with "-identify" within a "convert" command, eg:

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convert ^
  rose: ^
  ( +clone -fill Pink -colorize 100 ) ^
  -compose Difference -composite ^
  -grayscale Average ^
  -define identify:locate=minimum -define identify:limit=1 -identify ^
  NULL:

[fmw42]

OK, I will add it.

[fmw42]

I have added documentation for this to the options page. It may take a day or so to show up. But it can be used with both identify and convert/magick.

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convert -size 10x256 gradient: -rotate 90 grad.png

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identify -verbose -define identify:locate=maximum -define identify:limit=3 grad.png

Channel maximum locations:
Gray: 65535 (1) 255,0 255,1 255,2

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convert grad.png -verbose -define identify:locate=maximum -define identify:limit=3 info:

Channel maximum locations:
Gray: 65535 (1) 255,0 255,1 255,2