<br><font size=2 face="sans-serif">Hello-</font>
<br><font size=2 face="sans-serif">Is anyone aware of the use of gdalwarp
on GeoTIFF files; projecting from Michigan Oblique Mercator (epsg
3078) to WGS84 (epsg 4326)? ls</font>
<br><font size=2 face="sans-serif">EXAMPLE: gdalwarp -t_srs EPSG:4326 085_r3c25.tif
085_r3c25warp.tif</font>
<br>
<br><font size=2 face="sans-serif">We end up NE of Alaska, where as the
original tifs overlay just fine in Michigan when using ArcMap 9.3.1 </font>
<br>
<br><font size=2 face="sans-serif">These are tifs of high resolution orhto
flown in 2006 over Lake County MI; the MI projection info appears correct
in the tags.</font>
<br>
<br><font size=2 face="sans-serif">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>
<br>
<br><font size=2 face="sans-serif">Here is the gdalinfo of the original
GTIFF; it also interprets the xys to lat/longs in Alaska:</font>
<br>
<br><font size=2 face="sans-serif">TIF: gdalinfo 085_r3c25.tif</font>
<br><font size=2 face="sans-serif">Driver: GTiff/GeoTIFF</font>
<br><font size=2 face="sans-serif">Size is 1619, 1708</font>
<br><font size=2 face="sans-serif">Coordinate System is:</font>
<br><font size=2 face="sans-serif">PROJCS[" Projection Name = Oblique
Mercator (Hotine) Units = meters GeoTIFF Units = meters",</font>
<br><font size=2 face="sans-serif"> GEOGCS["NAD83",</font>
<br><font size=2 face="sans-serif"> DATUM["North_American_Datum_1983",</font>
<br><font size=2 face="sans-serif">
SPHEROID["GRS 1980",6378137,298.2572221010042,</font>
<br><font size=2 face="sans-serif">
AUTHORITY["EPSG","7019"]],</font>
<br><font size=2 face="sans-serif">
AUTHORITY["EPSG","6269"]],</font>
<br><font size=2 face="sans-serif"> PRIMEM["Greenwich",0],</font>
<br><font size=2 face="sans-serif"> UNIT["degree",0.0174532925199433],</font>
<br><font size=2 face="sans-serif"> AUTHORITY["EPSG","4269"]],</font>
<br><font size=2 face="sans-serif"> PROJECTION["Hotine_Oblique_Mercator"],</font>
<br><font size=2 face="sans-serif"> PARAMETER["latitude_of_center",45.3091667],</font>
<br><font size=2 face="sans-serif"> PARAMETER["longitude_of_center",-86],</font>
<br><font size=2 face="sans-serif"> PARAMETER["azimuth",337.25556],</font>
<br><font size=2 face="sans-serif"> PARAMETER["rectified_grid_angle",90],</font>
<br><font size=2 face="sans-serif"> PARAMETER["scale_factor",0.9996],</font>
<br><font size=2 face="sans-serif"> PARAMETER["false_easting",2546731.496],</font>
<br><font size=2 face="sans-serif"> PARAMETER["false_northing",-4354009.816],</font>
<br><font size=2 face="sans-serif"> UNIT["metre",1,</font>
<br><font size=2 face="sans-serif"> AUTHORITY["EPSG","9001"]]]</font>
<br><font size=2 face="sans-serif">Origin = (519086.028692,400863.870183)</font>
<br><font size=2 face="sans-serif">Pixel Size = (0.60960000,-0.60960000)</font>
<br><font size=2 face="sans-serif">Metadata:</font>
<br><font size=2 face="sans-serif"> AREA_OR_POINT=Area</font>
<br><font size=2 face="sans-serif">Corner Coordinates:</font>
<br><font size=2 face="sans-serif">Upper Left ( 519086.029,
400863.870) (173d36'53.89"W, 73d28'19.77"N)</font>
<br><font size=2 face="sans-serif">Lower Left ( 519086.029,
399822.673) (173d34'57.28"W, 73d28'14.49"N)</font>
<br><font size=2 face="sans-serif">Upper Right ( 520072.971, 400863.870)
(173d36'36.33"W, 73d28'51.24"N)</font>
<br><font size=2 face="sans-serif">Lower Right ( 520072.971, 399822.673)
(173d34'39.66"W, 73d28'45.96"N)</font>
<br><font size=2 face="sans-serif">Center ( 519579.500,
400343.272) (173d35'46.79"W, 73d28'32.87"N)</font>
<br><font size=2 face="sans-serif">Band 1 Block=1619x5 Type=Byte, ColorInterp=Gray</font>
<br>
<br><font size=2 face="sans-serif">TFW: cgacke@edclxs84> more
085_r3c25.tfw</font>
<br><font size=2 face="sans-serif">0.609600000000000030</font>
<br><font size=2 face="sans-serif">0.0</font>
<br><font size=2 face="sans-serif">0.0</font>
<br><font size=2 face="sans-serif">-0.609600000000000030</font>
<br><font size=2 face="sans-serif">519086.33349170600</font>
<br><font size=2 face="sans-serif">400863.56538265612</font>
<br>
<br>
<br><font size=2 face="sans-serif">Any advice or suggestions would be greatly
appreciated!</font>
<br>
<br><font size=2 face="sans-serif">Carolyn Gacke<br>
SGT Inc.<br>
Contractor to the USGS EROS</font>
<br><font size=2 face="sans-serif">Sioux Falls SD<br>
Email: cgacke@usgs.gov</font>