eoxserver.processing.gdal package¶

Submodules¶

eoxserver.processing.gdal.reftools module¶

class eoxserver.processing.gdal.reftools.CSL(**kwargs)¶

Bases: object

Wrapper for GDAL CSL API.

class eoxserver.processing.gdal.reftools.CoordinateTransformation(src_srs, dst_srs)¶: Bases: object

class eoxserver.processing.gdal.reftools.GCP¶

Bases: Structure

dfGCPLine¶: Structure/Union member

dfGCPPixel¶: Structure/Union member

dfGCPX¶: Structure/Union member

dfGCPY¶: Structure/Union member

dfGCPZ¶: Structure/Union member

pszId¶: Structure/Union member

pszInfo¶: Structure/Union member

class eoxserver.processing.gdal.reftools.Transformer(handle)¶: Bases: object

class eoxserver.processing.gdal.reftools.WARP_OPTIONS¶

Bases: Structure

dfCutlineBlendDist¶: Structure/Union member

dfWarpMemoryLimit¶: Structure/Union member

eResampleAlg¶: Structure/Union member

eWorkingDataType¶: Structure/Union member

hCutline¶: Structure/Union member

hDstDS¶: Structure/Union member

hSrcDS¶: Structure/Union member

nBandCount¶: Structure/Union member

nDstAlphaBand¶: Structure/Union member

nSrcAlphaBand¶: Structure/Union member

pDstDensityMaskFuncArg¶: Structure/Union member

pDstValidityMaskFuncArg¶: Structure/Union member

pPostWarpProcessorArg¶: Structure/Union member

pPreWarpProcessorArg¶: Structure/Union member

pProgressArg¶: Structure/Union member

pSrcDensityMaskFuncArg¶: Structure/Union member

pSrcValidityMaskFuncArg¶: Structure/Union member

pTransformerArg¶: Structure/Union member

padfDstNoDataImag¶: Structure/Union member

padfDstNoDataReal¶: Structure/Union member

padfSrcNoDataImag¶: Structure/Union member

padfSrcNoDataReal¶: Structure/Union member

panDstBands¶: Structure/Union member

panSrcBands¶: Structure/Union member

papSrcPerBandValidityMaskFuncArg¶: Structure/Union member

papfnSrcPerBandValidityMaskFunc¶: Structure/Union member

papszWarpOptions¶: Structure/Union member

pfnDstDensityMaskFunc¶: Structure/Union member

pfnDstValidityMaskFunc¶: Structure/Union member

pfnPostWarpChunkProcessor¶: Structure/Union member

pfnPreWarpChunkProcessor¶: Structure/Union member

pfnProgress¶: Structure/Union member

pfnSrcDensityMaskFunc¶: Structure/Union member

pfnSrcValidityMaskFunc¶: Structure/Union member

pfnTransformer¶: Structure/Union member

eoxserver.processing.gdal.reftools.create_rectified_vrt(path_or_ds, vrt_path, srid_or_wkt=None, resample=0, memory_limit=0.0, max_error=0.125, method=1, order=0, size=None, resolution=None)¶

Creates a VRT dataset that symbolizes a rectified version of the passed “referenceable” GDAL dataset.

Parameters:

path_or_ds – a GDAL Dataset or a path to such
vrt_path – the path to store the VRT dataset under
resample – the resample method to be used; defaults to 0 which means a nearest neighbour resampling
memory_limit – the memory limit; by default no limit is used
max_error – the maximum allowed error
method – either of METHOD_GCP, METHOD_TPS or METHOD_TPS_LSQ.
order – the order of the function; see get_footprint_wkt() for reference

eoxserver.processing.gdal.reftools.get_footprint_wkt(ds, method=1, order=0)¶

Returns the footprint of the GDAL Dataset using its GCPs for calculation.

Parameters:

method – either of METHOD_GCP, METHOD_TPS or METHOD_TPS_LSQ.
order –
(method specific):
- GCP (order of global fitting polynomial)
  - 0 for automatic order
  - 1, 2, and 3 for 1st, 2nd and 3rd polynomial
  - order
- TPS and TPS_LSQ (order of augmenting polynomial)
  - -1 for no-polynomial augmentation
  - 0 for 0th order (constant offset)
  - 1, 2, and 3 for 1st, 2nd and 3rd polynomial order

General guide:

method TPS, order 3 should work in most cases

method TPS_LSQ, order 3 should work in cases of an excessive number of tiepoints but it may become wobbly for small number of tiepoints

The global polynomial (GCP) interpolation does not work well for images covering large geographic areas (e.g., ENVISAT ASAR and MERIS).

Note

The default parameters are left for backward compatibility. They can be, however, often inappropriate!

eoxserver.processing.gdal.reftools.is_extended()¶: check whether the EOX’s GDAL extensions are available (True) or not (False)

eoxserver.processing.gdal.reftools.rect_from_subset(path_or_ds, srid, minx, miny, maxx, maxy, method=1, order=0)¶

Returns the smallest area of an image for the given spatial subset.

Parameters:

path_or_ds – a GDAL Dataset or a path to such
srid – the SRID the minx, miny, maxx and maxy are expressed in
minx – the minimum X subset coordinate
miny – the minimum Y subset coordinate
maxx – the maximum X subset coordinate
maxy – the maximum Y subset coordinate
method – either of METHOD_GCP, METHOD_TPS or METHOD_TPS_LSQ.
order – the order of the function; see get_footprint_wkt() for reference

Returns:

a Rect portraing the subset in image coordinates

eoxserver.processing.gdal.reftools.reproject_image(src_ds, src_wkt, dst_ds, dst_wkt, resample=0, memory_limit=0.0, max_error=0.125, method=1, order=0)¶

Transforms the source dataset to the destination dataset.

Parameters:

src_ds – the source GDAL Dataset
src_wkt – override the source projection in WKT notation
dst_ds – the source GDAL Dataset
dst_wkt – override the destination projection in WKT notation
resample – the resample method to be used; defaults to 0 which means a nearest neighbour resampling
memory_limit – the memory limit; by default no limit is used
max_error – the maximum allowed error
method – either of METHOD_GCP, METHOD_TPS or METHOD_TPS_LSQ.
order – the order of the function; see get_footprint_wkt() for reference

eoxserver.processing.gdal.reftools.suggest_transformer(path_or_ds)¶

suggest value of method and order to be passed to get_footprint_wkt and rect_from_subset

Parameters:: path_or_ds – a GDAL Dataset or a path to such.
Returns:: a dict containing the keys method and order

eoxserver.processing.gdal.reftools.suggested_warp_output(ds, src_wkt, dst_wkt, method=1, order=0)¶

Returns the suggested size and geotransform tuple for the given dataset.

Parameters:

ds – a GDAL Dataset
src_wkt – override the source WKT notation of the transform
dst_wkt – the destination projection in WKT notation
method – either of METHOD_GCP, METHOD_TPS or METHOD_TPS_LSQ.
order – the order of the function; see get_footprint_wkt() for reference

Returns:

the X size of the suggested warped image

Returns:

the Y size of the suggested warped image

Returns:

the geotransform tuple of the suggested warped image

eoxserver.processing.gdal.vrt module¶

eoxserver.processing.gdal.vrt.create_simple_vrt(ds, vrt_filename)¶

eoxserver.processing.gdal package¶

Submodules¶

eoxserver.processing.gdal.reftools module¶

eoxserver.processing.gdal.vrt module¶

Module contents¶