From: Nikolai Grigoriev (firstname.lastname@example.org)
Date: Thu Dec 11 2003 - 04:28:42 PST
> sometimes i get the error "invalid unit type in ..." while
> processing images. what does this mean?
This message may appear when parsing PNG, TIFF, or JPEG images.
These formats can store data about image resolution. Length units
to which the resolution is relative are stored in a separate field
inside the file; there is a closed list of permitted values for this
field (different for each format). Whenever XEP encounters a value
that is not in the respective list, it complains.
Which application do you use to produce images that give you
> when i open the image in photoshop an save it without changing
> anything then the image works correctly...
Most probably, Photoshop inserts a correct default value into
the respective field.
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