Thumbnail resolution. Specifies the object resolution for the thumbnail image.
Only used if catalog::ThumbType=3
.
Real number value greater than 0. Must have the same units as catalog::Resolution
.
attribute::ThumbRes
is used if the field is not present, if the value is 0 or if the field is empty.
catalog:ThumbType , catalog::Resolution, attribute::ThumbRes, req=tmb, Thumbnail Scaling