[Proj] GDA94 projection

[Hamish]

> I was wondering about the ability to reproject into GDA94 (geocentric
> dataum of australi) using proj4 libraries, and something like gdalwarp
> from gdal.  I know that gda94 is very close to wgs84, but it would be
> good to be able to use gda94.  Ideally I would like to call gdalwarp
> with proj4 arguments like:
>  
> -t_srs '+proj=utm +zone=55 +datum=GDA94'


Searching the EPSG file shows this is code 28355.

Use +proj=utm +epsg=code 



Hamish


$ grep -i -A1 gda94 epsg
# GDA94
<4283> +proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs  <>
--
# GDA94 / MGA zone 48
<28348> +proj=utm +zone=48 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 49
<28349> +proj=utm +zone=49 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 50
<28350> +proj=utm +zone=50 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 51
<28351> +proj=utm +zone=51 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 52
<28352> +proj=utm +zone=52 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 53
<28353> +proj=utm +zone=53 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 54
<28354> +proj=utm +zone=54 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 55
<28355> +proj=utm +zone=55 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 56
<28356> +proj=utm +zone=56 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 57
<28357> +proj=utm +zone=57 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>
# GDA94 / MGA zone 58
<28358> +proj=utm +zone=58 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs  <>