[Proj] problem in projection

[Jean-Claude REPETTO]

Noel Zinn wrote :
> EPSG Projected CRS code 3106 comes very close.  It's Bangladesh Transverse
> Mercator on the Gulshan 303 datum using Everest 1830 (1937 adjustment).  The
> only projection parameter that differs is the False Northing, 0 in the case
> of 3106 and -2M in your case (curious).

The ellipsoïd is different, too.
- Everest 1830 : a = 6377299.36
- Everest 1830 (1937 adjustment) : a = 6377276.35

Jean-Claude