Is this legal?

[Chad Berkley]

would this be a choice between 1..n controlPoints, 1..4 cornerPoints or 
1 bilinear fit?  So, it should validate if you do something like:

<georeferenceInfo>
   <controlPoint/>
   <controlPoint/>
   <controlPoint/>
   <controlPoint/>
   <controlPoint/>
   <controlPoint/>
</georeferenceInfo>

or if you do

<georeferenceInfo>
   <cornerPoint/>
   <cornerPoint/>
</georeferenceInfo>

or

<georeferenceInfo>
   <bilinearFit/>
</georeferenceInfo>


but not if you do this:

<georeferenceInfo>
   <cornerPoint/>
   <cornerPoint/>
   <cornerPoint/>
   <cornerPoint/>
   <cornerPoint/>
</georeferenceInfo>

or

<georeferenceInfo>
   <controlPoint/>
   <controlPoint/>
   <cornerPoint/>
   <cornerPoint/>
   <cornerPoint/>
</georeferenceInfo>

or

<georeferenceInfo>
   <bilinearFit/>
   <bilinearFit/>
</georeferenceInfo>

it's kind of weird, but now that I look at it, it seems ok...at least 
from looking at the picture.  I don't know what the schema looks like.

chad

Dan Higgins wrote:
> Hi All,
> 
>     In the spatialRaster module of eml2, we have the contruction shown 
> below where georeferenceInfo is followed by a choice of one of 3 
> elements (cornerPoint, controlPoint, or bilinearFit. But cornerPoint and 
> controlPoint are defined with caridinalitiies greater than 1!  Is this 
> legal? (or meanngful?)  Since the Choice element has a cardinality of 1, 
> doesn't this mean that only ONE child is allowed? If so, one cannot have 
> multiple cornerPoint or controlPoint elements (unless they are placed 
> within a Sequence)?
> 
> 
> geoReference
> 
> Dan
> 
> -- 
> *******************************************************************
> Dan Higgins                                  higgins at nceas.ucsb.edu
> http://www.nceas.ucsb.edu/    Ph: 805-892-2531
> National Center for Ecological Analysis and Synthesis (NCEAS) 
> 735 State Street - Room 205
> Santa Barbara, CA 93195
> *******************************************************************
> 


-- 
-----------------------
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
berkley at nceas.ucsb.edu
-----------------------