我用下载下来的srtm数据制作地形，为什么失败？如下

heven_jing

E:\data>osgDem -d srtm_01_02.tif -t srtm_01_02.tif -l 6 -v 0.1 -o piece.ive
-d srtm_01_02.tif
-t srtm_01_02.tif
-o piece.ive
Adding terrainTile
DataSet::_run() 0 0
DataSet::assignDestinationCoordinateSystem() : assigning first source file as th
e destination coordinate system
started DataSet::createDestination(6)
Time for after_reproject 0.000003
AR=1.000002 C1=1 R1=1
createNewDestinationGraph
Time for _destinationGraph->computeMaximumSourceResolution() = 0.000010
Time for createDestinationGraph 0.000186
Time for after_computeNeighbours 0.000069
completed DataSet::createDestination(6)
There are 2 contributing source files:
    srtm_01_02.tif
    srtm_01_02.tif
mkpath()
Need to create output task directory = piece_root_L0_X0_Y0
mkpath(piece_root_L0_X0_Y0)
   created directory piece_root_L0_X0_Y0
Task output directory = piece_root_L0_X0_Y0\
started DataSet::writeDestination(piece.ive)
_readRow 1
   reading tile level=0 X=0 Y=0
imageName = piece_L0_X0_Y0.dds
DestinationTile::readFrom(SetName=, FileName=srtm_01_02.tif)
DestinationTile::readFrom(SetName=, FileName=srtm_01_02.tif)
_equalizeRow 1
   equalizing tile level=0 X=0 Y=0
_writeRow 1
DestinationTile::createStateSet() - DataSet::MIP_MAPPING_IMAGERY
Compressed image
       getDirectory()=
   writeNodeFile = 0 X=0 Y=0 filename=piece.ive
_writeNodeFile(piece.ive)
vpb::access(piece.ive, W_OK)=-1
vpb::access(., W_OK)=0
completed DataSet::writeDestination(piece.ive)
Elapsed time = 17.985574

E:\data>

FlySky

你可能没有意识你到一个问题就是你的高程数据和影像数据是一样的～～～～你没有考虑到它们之间本身的区别～～～～～～～～··