GDAL Results Interpret for Australian Raster

Thu Aug 5 19:38:46 PDT 2004

I'll send the EPSG definitions to your address, not to the list so I won't bug everyone with it!

-----Original Message-----
From: dabner at optusnet.com.au [mailto:dabner at optusnet.com.au] 
Sent: 6 August 2004 10:31
To: Delfos, Jacob
Cc: 'Nick Dabner'
Subject: Re: RE: [UMN_MAPSERVER-USERS] GDAL Results Interpret for Australian Raster

Thanks for your offer jacob. Would like to get it in WGS84 
projection so better info to run through gdalwarp would be good.

It is a shame it is so easy to load this stuff on many of the GIS 
products but mapserver returns a blank screen.

TFYH.

> Delfos, Jacob <jacob.delfos at maunsell.com> wrote:
> 
> Nick,
> 
> Adelaide is in zone 53. Brisbane zone 56. There is a file that 
comes 
> with
> ESRI software that tells you.
> 
> For such a large map it might be wise to use lattitude longitude. 
> Otherwise
> maybe use a zone in the middle of it. It would be good to re-
project 
> your
> data to be in the same projection, because reprojecting on the 
fly in
> mapserver can take a while with large datasets and images. If you 
want 
> to
> use AMG66 in your actual mapfile, let me know. I'll send you the 
> correct
> EPSG definitions of them. The ones that are standard in there are 
way 
> off,
> and I have no idea how they got in there (same for AMG84).
> 
> Regards,
> 
> Jacob
> 
> 
> -----Original Message-----
> From: UMN MapServer Users List [mailto:MAPSERVER-
USERS at LISTS.UMN.EDU] 
> On
> Behalf Of Nick Dabner
> Sent: 6 August 2004 06:03
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: Re: [UMN_MAPSERVER-USERS] GDAL Results Interpret 
for 
> Australian
> Raster
> 
> 
> Thanks Jacob.
> 
> As the path may have indicated. These are Ausways maps. I 
believe they
> are in AMG66 format, although my associated vectors are in 
WGS84 so I
> am told.
> The map covers Adelaide to Brisbane which is potentially 
providing the
> conflicting zone info you noted. I am personally in Melbourne.
> 
> How can you tell what zone - by the longitude? Would you use 
the
> centroid as this is a large map?
> 
> regards, Nick
> 
> On 05/08/2004, at 10:15 AM, J. Delfos wrote:
> 
> > Those are pretty unusual bounding X coordinates. Where in Oz 
are you?
> > Check out this page:
> > http://mapserver.gis.umn.edu/doc40/raster-
howto.html#formats
> >
> > It has examples. I'd say your file is in UTM, but projected in the
> > wrong
> > zone (2 zones too many to the east, or something). Your 
projection is
> > probably MGA, but possibly AMG. You better find out, because 
they
> > differ
> > 200m.
> >
> > Jacob
> >
> > -----Original Message-----
> > From: UMN MapServer Users List [mailto:MAPSERVER-
USERS at LISTS.UMN.EDU]
> > On
> > Behalf Of Nick Dabner
> > Sent: 5 August 2004 07:12
> > To: MAPSERVER-USERS at LISTS.UMN.EDU
> > Subject: [UMN_MAPSERVER-USERS] GDAL Results Interpret for 
Australian
> > Raster
> >
> >
> > Hello all,
> >
> > I have a rasterset covering parts of Australia. TatukGis and 
other
> > products can view it, but I cannot even get it to simply display 
in
> > mapserver - usually just a blank screen. Furthermore, the 
information
> > provided by gdalinfo with respect to the datum is unknown, so 
I am 
> not
> > sure if a projection is required etc.
> >
> > Can anyone suggest the portions of the mapfile which would 
allow this
> > raster to load? I have included most of gdalinfo details below, 
TIA:
> >
> > C:\gdal120\bin>gdalinfo.exe C:
\ms4w\apps\MELWAY31\hgrtif\ADELBRIS.TIF
> > Driver: GTiff/GeoTIFF
> > Size is 4809, 4075
> > Coordinate System is:
> > PROJCS["unnamed",
> >      GEOGCS["unnamed",
> >          DATUM["unknown",
> >              SPHEROID["unretrievable - using
> > WGS84",6378137,298.257223563]],
> >          PRIMEM["Greenwich",0],
> >          UNIT[,0.0174532925199433],
> >          AUTHORITY["EPSG","0"]],
> >      UNIT["unknown",1],
> >      AUTHORITY["EPSG","0"]]
> > Origin = (1857716.251568,5544261.870844)
> > Pixel Size = (317.52333125,-317.52333125)
> > Metadata:
> >    TIFFTAG_IMAGEDESCRIPTION=
> >
> >    TIFFTAG_DATETIME=2004:01:05 22:39:05
> >    TIFFTAG_XRESOLUTION=300
> >    TIFFTAG_YRESOLUTION=300
> >    TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
> > Corner Coordinates:
> > Upper Left  ( 1857716.252, 5544261.871)
> > (106439300d44'382252089395.85"E,31766280
> > 5d42'1142461300788.73"N)
> > Lower Left  ( 1857716.252, 4250354.296)
> > (106439300d44'382252089395.85"E,24352736
> > 2d35'876173328429.93"N)
> > Upper Right ( 3384685.952, 5544261.871) (193928220d
> > 0'700079669251.66"E,31766280
> > 5d42'1142461300788.73"N)
> > Lower Right ( 3384685.952, 4250354.296) (193928220d
> > 0'700079669251.66"E,24352736
> > 2d35'876173328429.93"N)
> > Center      ( 2621201.102, 4897308.083)
> > (150183760d22'541165879323.76"E,28059508
> > 4d 9'1009317314579.33"N)
> > Band 1 Block=4809x1 Type=Byte, ColorInterp=Palette
> >    Color Table (RGB with 256 entries)
> >      0: 0,0,0,255
> >
> >
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