Problem with morphing WKT to/from ESRI for several projections using a scale factor (eg Mercator-1SP, Polar Stereo)

[pds]

Similar to #4279, found while doing some tests using HFA driver that morphing to/from OGC WKT to ESRI strings doesn't handle well projections with a scale_factor.

E.g. if I translate a GeoTIFF with Mercator 1SP to HFA, and then run gdalinfo, I get:

gdalinfo on GeoTiff?, projection part:

    PROJECTION["Mercator_1SP"],
    PARAMETER["central_meridian",145],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],

    gdal_translate melb-small_M-1SP.tif -of HFA melb-small_M-1SP.img

gdalinfo projection part on HFA:

    PROJECTION["Mercator_1SP"],
    PARAMETER["central_meridian",145],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    PARAMETER["latitude_of_origin",0.0],

IE the 'scale_factor' has disappeared and been replaced by a latitude_of_origin.

[pds]

Sample GeoTiff?

[pds]

Sample HFA file, translated from GeoTiff?

[pds]

Looking at the source:/trunk/gdal/ogr/ogr_srs_esri.cpp file, it again seems to be a case where adjustment is done on morphToESRI():

        DeleteParamBasedOnPrjName( this, pszProjection, (char **)apszDeleteParametersBasedOnProjection);

(and apszDeleteParametersBasedOnProjection is defined in ogr_srs_esri_names.h)

but there's no equivalent reverse operation being done in morphFromESRI().