Evening all,
A question to you from a not very experienced QLGT user!
I have scanned 3 pieces of 2 Japanese 1:50000 maps & put them together
as one sheet in GIMP. This I have saved as a .tiff file.
I have opened this file in QLGT & am trying to "do" the geo ref, but
cannot - every time I try it I get the same set of messages.... Sadly,
I don't appear to have anything other than the QLGT frame with error
explanations.
(Running Fedora 16 with KDE, QLGT 1.5.1, QT Library 4.8.2, GDAL Library
GDAL 1.7.3, Proj4 Library 470)
So, here is what I have done so far:
Step 1, gave the name of my map file ending in .tif
accepted the output file of same name, ending _ref.tif
set projection as +proj=utm +zone=52
left mode as linear (3 ref pts)
clicked on overviews 2x (--no idea what difference it makes
whether I click 2,4, 8, 16 or 32x)
Step 2,
Ref projection is given as:
+proj=longlat +a=6378137.0000 +b=6356752.3142 +towgs84=0,0,0,0,0,0,0,0
+units=m +no_defs
set following points:
Aso eki 694470 3646273 1926 1744
Miyaji eki 697997 3646304 2757 1753
Aso san ropeway 694079 3639881 1806 3237
Nakamatsu eki 692230 3634019 1344 4617
Click on <Start Process>
Step 3 Process gives following:
/usr/bin/gdal_translate -a_srs +proj=utm +zone=52 -gcp 1926 1744
694470.000000 3646273.000000 -gcp 2757 1753 697997.000000 3646304.000000
-gcp 1806 3237 694079.000000 3639881.000000 -gcp 1344 4617 692230.000000
3634019.000000 /home/Dave/Desktop/Garmin/Aso_3_part_01.tif
/tmp/qt_temp.K15235
Input file size is 3508, 4960
0...10...20...30...40...50...60...70...80...90...100 - done.
/usr/bin/gdalwarp -order 1 -r cubic -dstnodata "255" /tmp/qt_temp.K15235
/tmp/qt_temp.M15235
Creating output file that is 3599P x 5035L.
Processing input file /tmp/qt_temp.K15235.
Using band 4 of source image as alpha.
Using band 4 of destination image as alpha.
0...10...20...30...40...50...60...70...80...90...100 - done.
/usr/bin/gdal_translate -co tiled=yes -co blockxsize=256 -co
blockysize=256 -co compress=deflate /tmp/qt_temp.M15235
/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif
Input file size is 3599, 5035
0...10...20...30...40...50...60...70...80...90...100 - done.
/usr/bin/gdaladdo -r cubic --config COMPRESS_OVERVIEW JPEG
/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif 2
0...10...20...30..
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 384, incorrect header check
ERROR 1: TIFFReadEncodedTile() failed.
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 512, incorrect header check
ERROR 1: TIFFReadEncodedTile() failed.
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 896, incorrect header check
ERROR 1: TIFFReadEncodedTile() failed.
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 1024, incorrect header check
ERROR 1: TIFFReadEncodedTile() failed.
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 1408, incorrect header check
ERROR 1: TIFFReadEncodedTile() failed.
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 0, incorrect header check
ERROR 1: TIFFReadEncodedTile() failed.
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 384, unknown compression method
ERROR 1: TIFFReadEncodedTile() failed.
(Many, many more of the same)
ERROR 1: ZIPDecode:/home/Dave/Desktop/Garmin/Aso_3_part_01_ref.tif:
Decoding error at scanline 0, incorrect header check
ERROR 1: TIFFReadEncodedTile() failed.
50...60...70...80...90...100 - done.
Overview building failed.
ERROR 6: WriteBlock() not supported for this dataset.
Failed!
Can anyone help me to get past these errors??????
Many thanks
Dave
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