[gdal-dev] BAG Driver - dimension size being written in the wrong order

[Eric Younkin - NOAA Federal]

Hello,

Using conda installed GDAL 3.2.1

I think I've stumbled on a bug with the BAG driver.  It seems as though
when you use Create() to make a BAG, it writes the dimensionSize xml
attribute in the wrong order.  It sets the column dimension size to the row
dimensionSize xml attribute, and row to column.  I found this on examining
the xml manually, see blob below.

<gmd:axisDimensionProperties>
        <gmd:MD_Dimension>
          <gmd:dimensionName>
            <gmd:MD_DimensionNameTypeCode codeList="
http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_DimensionNameTypeCode"
codeListValue="row">row</gmd:MD_DimensionNameTypeCode>
          </gmd:dimensionName>


*          <gmd:dimensionSize>            <gco:Integer>546</gco:Integer>
      </gmd:dimensionSize>*
          <gmd:resolution>
            <gco:Measure uom="m">2.0</gco:Measure>
          </gmd:resolution>
        </gmd:MD_Dimension>
      </gmd:axisDimensionProperties>

This bug does not affect viewing the BAG in QGIS, as it seems like QGIS
just computes the size using the actual array.  I found that GDAL created
BAGs would not load in Caris, a software for viewing bathymetric data.  I
believe that is because Caris is using the dimensionSize xml instead of
calculating size from the data.  If I swap row/col dimensionSize, the BAG
then works in Caris.

Seems like a relatively simple fix (assuming I am right about this), please
let me know if I need to submit it somewhere else.

Thanks,
Eric

-- 
Eric Younkin
Physical Scientist
NOAA OCS, Hydrographic Systems and Technology Branch
1315 East-West Highway
N/CS11, Room 6604
Silver Spring, MD 20910
Office: 240-847-8208
Cell: 828-331-8197
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