I am trying to understand exactly how the BoundingBox statement affects 
the display of maps. I thought that it was used as a global bounding box 
for any map that is displayed, no matter what EPSG the map is using. 
With this in mind, I loaded a map into my map server (Geoserver) and 
gave it 4326 as its EPSG. I set the BoundingBox to match its min and max 
values:

<BoundingBox SRS="EPSG:4326"  maxx = "-12.155280113220215" maxy = 
"83.62303161621094" minx = "-178.21420288085938" miny = 
"7.205832004547119"/>

It drew fine. Then I changed the Bounding box in my xml to be the 
following without altering the EPSG used in Geoserver for the map:

<BoundingBox SRS="EPSG:3572"  maxx = "-52.661774646446" maxy = 
"83.11044811477899" minx = "-179.1307342443929" miny = 
"7.2060624177979165"/>

It no longer draws. I'm guessing I have some very basic 
misunderstanding. Can someone please tell me what it is??

Thank you very much,

Amy Johnson

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