| This class is a placeholder for defining exact affine transformations between
raster and model space.
Quoting the geotiff spec:
ModelPixelScaleTag:
Tag = 33550
Type = DOUBLE (IEEE Double precision)
N = 3
Owner: SoftDesk
This tag may be used to specify the size of raster pixel spacing in the model
space units, when the raster space can be embedded in the model space
coordinate system without rotation, and consists of the following 3 values:
ModelPixelScaleTag = (ScaleX, ScaleY, ScaleZ)
where ScaleX and ScaleY give the horizontal and vertical spacing of raster
pixels. The ScaleZ is primarily used to map the pixel value of a digital
elevation model into the correct Z-scale, and so for most other purposes this
value should be zero (since most model spaces are 2-D, with Z=0).
A single tiepoint in the ModelTiepointTag, together with this tag, completely
determine the relationship between raster and model space
author:
Simone Giannecchini
since:
2.3 |
