[gdal-dev] gcps2wld not finding GCPs

Wolfgang16 wonic at t-online.de
Tue Jun 25 11:48:39 PDT 2013


I did some further research. I have appended a .map file at which gcps2wld.py
prints out a worldfile. With this however gdalinfo and gdal_translate do NOT
do a geotransform. When I
SET OZI_APPROX_GEOTRANSFORM=YES
they do, but then gcps2wld.py finds no gcps. So its just the other way
around as one would expect. 


I checked a few other files and my guess is that gcps2wld.py prints out a
worldfile when there is no proper geotransform and when there is a
geotransform then it claims it doesn't find gcps.

Thanks
Wolfgang
-------------------------------------------

OziExplorer Map Data File Version 2.2
K-37-024-B.png
C:\maps\50000\K-37-024-B.png
1 ,Map Code,
WGS 84,,   0.0000,   0.0000,WGS 84
Reserved 1
Reserved 2
Magnetic Variation,,,E
Map Projection,Mercator,PolyCal,No,AutoCalOnly,No,BSBUseWPX,No
Point01,xy,    0,    0,in, deg,  43, 39.9941,N,  41, 44.9240,E, grid,   ,          
,           ,N
Point02,xy, 5827, 5361,in, deg,  43, 29.9947,N,  41, 59.9281,E, grid,   ,          
,           ,N
Point03,xy,    0, 5361,in, deg,  43, 29.9947,N,  41, 44.9240,E, grid,   ,          
,           ,N
Point04,xy, 5827,    0,in, deg,  43, 39.9941,N,  41, 59.9281,E, grid,   ,          
,           ,N
Point05,xy, 2913, 2680,in, deg,  43, 34.9969,N,  41, 52.4273,E, grid,   ,          
,           ,N
Point06,xy, 2913,    0,in, deg,  43, 39.9941,N,  41, 52.4273,E, grid,   ,          
,           ,N
Point07,xy,    0, 2680,in, deg,  43, 34.9969,N,  41, 44.9240,E, grid,   ,          
,           ,N
Point08,xy, 5827, 2680,in, deg,  43, 34.9969,N,  41, 59.9281,E, grid,   ,          
,           ,N
Point09,xy, 2913, 5361,in, deg,  43, 29.9947,N,  41, 52.4273,E, grid,   ,          
,           ,N
Point10,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point11,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point12,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point13,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point14,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point15,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point16,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point17,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point18,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point19,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point20,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point21,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point22,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point23,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point24,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point25,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point26,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point27,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point28,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point29,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Point30,xy,     ,     ,in, deg,    ,        ,N,    ,        ,W, grid,   ,          
,           ,N
Projection Setup,,,,,,,,,,
Map Feature = MF ; Map Comment = MC     These follow if they exist
Track File = TF      These follow if they exist
Moving Map Parameters = MM?    These follow if they exist
MM0,Yes
MMPNUM,4
MMPXY,1,0,0
MMPXY,2,5827,0
MMPXY,3,5827,5361
MMPXY,4,0,5361
MMPLL,1,  41.748747,  43.666558
MMPLL,2,  41.998816,  43.666558
MMPLL,3,  41.998816,  43.499901
MMPLL,4,  41.748747,  43.499901
MM1B,3.464919
LL Grid Setup
LLGRID,No,No Grid,Yes,255,16711680,0,No Labels,0,16777215,7,1,Yes,x
Other Grid Setup
GRGRID,No,No Grid,Yes,255,16711680,No Labels,0,16777215,8,1,Yes,No,No,x
MOP,Map Open Position,0,0
IWH,Map Image Width/Height,5827,5361




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