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<p>Carolyn,<br>
I may be running into something similar. Try setting the origin projection of the source tiff using the -s_srs parameter and see what result you get.<br>
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Doug<br>
<br>
Doug Newcomb <br>
USFWS<br>
Raleigh, NC<br>
919-856-4520 ext. 14 doug_newcomb@fws.gov<br>
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The opinions I express are my own and are not representative of the official policy of the U.S.Fish and Wildlife Service or Dept. of the Interior. Life is too short for undocumented, proprietary data formats.<br>
<img width="16" height="16" src="cid:1__=0ABBFC32DFCE85668f9e8a93df938690@fws.gov" border="0" alt="Inactive hide details for Carolyn Gacke <cgacke@usgs.gov>">Carolyn Gacke <cgacke@usgs.gov><br>
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<ul><b><font size="2">Carolyn Gacke <cgacke@usgs.gov></font></b><font size="2"> </font><br>
<font size="2">Sent by: gdal-dev-bounces@lists.osgeo.org</font>
<p><font size="2">01/04/2010 09:24 AM</font></ul>
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<div align="right"><font size="2">To</font></div></td><td width="100%"><img width="1" height="1" src="cid:3__=0ABBFC32DFCE85668f9e8a93df938690@fws.gov" border="0" alt=""><br>
<font size="2">gdal-dev@lists.osgeo.org</font></td></tr>
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<div align="right"><font size="2">cc</font></div></td><td width="100%"><img width="1" height="1" src="cid:3__=0ABBFC32DFCE85668f9e8a93df938690@fws.gov" border="0" alt=""><br>
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<div align="right"><font size="2">Subject</font></div></td><td width="100%"><img width="1" height="1" src="cid:3__=0ABBFC32DFCE85668f9e8a93df938690@fws.gov" border="0" alt=""><br>
<font size="2">[gdal-dev] gdalwarp use of Michigan Oblique Mercator</font></td></tr>
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Hello-<font size="4"> </font><br>
Is anyone aware of the use of gdalwarp on GeoTIFF files; projecting from Michigan Oblique Mercator (epsg 3078) to WGS84 (epsg 4326)? ls<font size="4"> </font><br>
EXAMPLE: gdalwarp -t_srs EPSG:4326 085_r3c25.tif 085_r3c25warp.tif<font size="4"> <br>
</font><br>
We end up NE of Alaska, where as the original tifs overlay just fine in Michigan when using ArcMap 9.3.1 <font size="4"> <br>
</font><br>
These are tifs of high resolution orhto flown in 2006 over Lake County MI; the MI projection info appears correct in the tags.<font size="4"> <br>
</font><br>
We have quite a bit of high res ortho datasets; at times we have to modify tfws/tags, however this one has us stumped(!)<font size="4"> <br>
</font><br>
Here is the gdalinfo of the original GTIFF; it also interprets the xys to lat/longs in Alaska:<font size="4"> <br>
</font><br>
TIF: gdalinfo 085_r3c25.tif<font size="4"> </font><br>
Driver: GTiff/GeoTIFF<font size="4"> </font><br>
Size is 1619, 1708<font size="4"> </font><br>
Coordinate System is:<font size="4"> </font><br>
PROJCS[" Projection Name = Oblique Mercator (Hotine) Units = meters GeoTIFF Units = meters",<font size="4"> </font><br>
GEOGCS["NAD83",<font size="4"> </font><br>
DATUM["North_American_Datum_1983",<font size="4"> </font><br>
SPHEROID["GRS 1980",6378137,298.2572221010042,<font size="4"> </font><br>
AUTHORITY["EPSG","7019"]],<font size="4"> </font><br>
AUTHORITY["EPSG","6269"]],<font size="4"> </font><br>
PRIMEM["Greenwich",0],<font size="4"> </font><br>
UNIT["degree",0.0174532925199433],<font size="4"> </font><br>
AUTHORITY["EPSG","4269"]],<font size="4"> </font><br>
PROJECTION["Hotine_Oblique_Mercator"],<font size="4"> </font><br>
PARAMETER["latitude_of_center",45.3091667],<font size="4"> </font><br>
PARAMETER["longitude_of_center",-86],<font size="4"> </font><br>
PARAMETER["azimuth",337.25556],<font size="4"> </font><br>
PARAMETER["rectified_grid_angle",90],<font size="4"> </font><br>
PARAMETER["scale_factor",0.9996],<font size="4"> </font><br>
PARAMETER["false_easting",2546731.496],<font size="4"> </font><br>
PARAMETER["false_northing",-4354009.816],<font size="4"> </font><br>
UNIT["metre",1,<font size="4"> </font><br>
AUTHORITY["EPSG","9001"]]]<font size="4"> </font><br>
Origin = (519086.028692,400863.870183)<font size="4"> </font><br>
Pixel Size = (0.60960000,-0.60960000)<font size="4"> </font><br>
Metadata:<font size="4"> </font><br>
AREA_OR_POINT=Area<font size="4"> </font><br>
Corner Coordinates:<font size="4"> </font><br>
Upper Left ( 519086.029, 400863.870) (173d36'53.89"W, 73d28'19.77"N)<font size="4"> </font><br>
Lower Left ( 519086.029, 399822.673) (173d34'57.28"W, 73d28'14.49"N)<font size="4"> </font><br>
Upper Right ( 520072.971, 400863.870) (173d36'36.33"W, 73d28'51.24"N)<font size="4"> </font><br>
Lower Right ( 520072.971, 399822.673) (173d34'39.66"W, 73d28'45.96"N)<font size="4"> </font><br>
Center ( 519579.500, 400343.272) (173d35'46.79"W, 73d28'32.87"N)<font size="4"> </font><br>
Band 1 Block=1619x5 Type=Byte, ColorInterp=Gray<font size="4"> <br>
</font><br>
TFW: cgacke@edclxs84> more 085_r3c25.tfw<font size="4"> </font><br>
0.609600000000000030<font size="4"> </font><br>
0.0<font size="4"> </font><br>
0.0<font size="4"> </font><br>
-0.609600000000000030<font size="4"> </font><br>
519086.33349170600<font size="4"> </font><br>
400863.56538265612<font size="4"> <br>
<br>
</font><br>
Any advice or suggestions would be greatly appreciated!<font size="4"> <br>
</font><br>
Carolyn Gacke<br>
SGT Inc.<br>
Contractor to the USGS EROS<font size="4"> </font><br>
Sioux Falls SD<br>
Email: cgacke@usgs.gov<tt>_______________________________________________<br>
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