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Aspose.GIS for for Python via .NET 25.4 Release Notes
This page contains release notes information for Aspose.GIS for Python via .NET 25.4.
Full List of Issues Covering all Changes in this Release
| Key | Summary | Category |
|---|---|---|
| GISPYTHON-17 | Write data to GML Format | Feature |
| GISPYTHON-18 | Support AutoId For SaveTo Method | Feature |
| GISPYTHON-19 | Support of BigTiff GeoTiff files | Feature |
| GISPYTHON-20 | Fix For Writing Gdb File With HasZ (HasM) Options | Bug |
Public API and Backward Incompatible Changes
Following members have been added:
- M:Aspose.Gis.Formats.Gml.GmlDriver.CreateLayer(Aspose.Gis.AbstractPath,Aspose.Gis.Formats.Gml.GmlOptions)
- M:Aspose.Gis.Formats.Gml.GmlDriver.CreateLayer(Aspose.Gis.AbstractPath,Aspose.Gis.Formats.Gml.GmlOptions,Aspose.Gis.SpatialReferencing.SpatialReferenceSystem)
- P:Aspose.Gis.Formats.Gml.GmlOptions.ApplicationNamespace
Following members have been removed:
- None
Usage examples:
GISPYTHON-17. Write data to GML Format
initial_data = """{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"id": 1,
"geometry": {
"type": "Point",
"coordinates": [-0.1276, 51.5072]
},
"properties": {
"name": "London",
"category": "city",
"population": 8982000,
"is_capital": true,
"description": "Capital of the United Kingdom"
}
},
{
"type": "Feature",
"id": 2,
"geometry": {
"type": "LineString",
"coordinates": [
[-0.1807, 51.4953],
[-0.1750, 51.5020],
[-0.1667, 51.5095]
]
},
"properties": {
"name": "M25 Motorway",
"category": "highway",
"length_km": 188,
"lanes": 4
}
},
{
"type": "Feature",
"id": 3,
"geometry": {
"type": "Polygon",
"coordinates": [
[
[-0.1637, 51.5079],
[-0.1590, 51.5032],
[-0.1523, 51.5058],
[-0.1570, 51.5105],
[-0.1637, 51.5079]
]
]
},
"properties": {
"name": "Hyde Park",
"category": "park",
"area_ha": 142,
"established": "1637-01-01"
}
},
{
"type": "Feature",
"id": 4,
"geometry": {
"type": "MultiPolygon",
"coordinates": [
[
[
[-0.0237, 51.5036],
[-0.0200, 51.5000],
[-0.0150, 51.5030],
[-0.0237, 51.5036]
]
],
[
[
[-0.0300, 51.5100],
[-0.0250, 51.5080],
[-0.0200, 51.5120],
[-0.0300, 51.5100]
]
]
]
},
"properties": {
"name": "Canary Wharf Complex",
"category": "business district",
"status": "active",
"floors": 50,
"description": "Major financial hub in London"
}
}
]
}"""
xsd = """<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:app="http://www.mydomain.net/myapp"
xmlns:gml="http://www.opengis.net/gml"
targetNamespace="http://www.mydomain.net/myapp"
elementFormDefault="qualified">
<!-- Places (FeatureCollection override) -->
<xs:element name="Places" type="app:PlacesType"
substitutionGroup="gml:_FeatureCollection"/>
<xs:complexType name="PlacesType">
<xs:complexContent>
<xs:extension base="gml:AbstractFeatureCollectionType">
<xs:sequence>
<xs:element ref="app:placeMember" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<!-- placeMember (featureMember override) -->
<xs:element name="placeMember" type="app:PlaceMemberType"
substitutionGroup="gml:featureMember"/>
<xs:complexType name="PlaceMemberType">
<xs:complexContent>
<xs:extension base="gml:FeatureAssociationType">
<xs:sequence>
<xs:element ref="app:Place"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<!-- Place (Feature override) -->
<xs:element name="Place" type="app:PlaceType"
substitutionGroup="gml:_Feature"/>
<xs:complexType name="PlaceType">
<xs:complexContent>
<xs:extension base="gml:AbstractFeatureType">
<xs:sequence>
<!-- Custom attributes -->
<xs:element name="id" type="xs:integer"/>
<xs:element name="name" type="xs:string"/>
<xs:element name="category" type="xs:string"/>
<!-- Geometry -->
<xs:element ref="gml:geometryProperty"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>"""
gml = """<?xml version="1.0" encoding="utf-8"?>
<app:Places xmlns:gml="http://www.opengis.net/gml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:app="http://www.mydomain.net/myapp" xmlns:ogr="http://ogr.maptools.org/" xsi:schemaLocation="http://www.mydomain.net/myapp temp.xsd">
<app:placeMember>
<app:Place>
<app:name>London</app:name>
<app:category>city</app:category>
<app:id>1</app:id>
<gml:geometryProperty>
<gml:Point gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<gml:coord>
<gml:X>-0.1276</gml:X>
<gml:Y>-0.1276</gml:Y>
</gml:coord>
</gml:Point>
</gml:geometryProperty>
</app:Place>
</app:placeMember>
<app:placeMember>
<app:Place>
<app:name>M25 Motorway</app:name>
<app:category>highway</app:category>
<app:id>2</app:id>
<gml:geometryProperty>
<gml:LineString gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<gml:coordinates xmlns:gml="http://www.opengis.net/gml" decimal="." cs="," ts=" ">-0.1807 51.4953-0.175 51.502-0.1667 51.5095</gml:coordinates>
</gml:LineString>
</gml:geometryProperty>
</app:Place>
</app:placeMember>
<app:placeMember>
<app:Place>
<app:name>Hyde Park</app:name>
<app:category>park</app:category>
<app:id>3</app:id>
<gml:geometryProperty>
<gml:Polygon gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<outerBoundaryIs>
<gml:LinearRing gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<gml:coordinates xmlns:gml="http://www.opengis.net/gml" decimal="." cs="," ts=" ">-0.1637 51.5079-0.159 51.5032-0.1523 51.5058-0.157 51.5105-0.1637 51.5079</gml:coordinates>
</gml:LinearRing>
</outerBoundaryIs>
</gml:Polygon>
</gml:geometryProperty>
</app:Place>
</app:placeMember>
<app:placeMember>
<app:Place>
<app:name>Canary Wharf Complex</app:name>
<app:category>business district</app:category>
<app:id>4</app:id>
<gml:geometryProperty>
<gml:MultiGeometry gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<gml:geometryMember>
<gml:Polygon gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<outerBoundaryIs>
<gml:LinearRing gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<gml:coordinates xmlns:gml="http://www.opengis.net/gml" decimal="." cs="," ts=" ">-0.0237 51.5036-0.02 51.5-0.015 51.503-0.0237 51.5036</gml:coordinates>
</gml:LinearRing>
</outerBoundaryIs>
</gml:Polygon>
</gml:geometryMember>
<gml:geometryMember>
<gml:Polygon gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<outerBoundaryIs>
<gml:LinearRing gml:srsName="http://www.opengis.net/gml/srs/epsg.xml#4326">
<gml:coordinates xmlns:gml="http://www.opengis.net/gml" decimal="." cs="," ts=" ">-0.03 51.51-0.025 51.508-0.02 51.512-0.03 51.51</gml:coordinates>
</gml:LinearRing>
</outerBoundaryIs>
</gml:Polygon>
</gml:geometryMember>
</gml:MultiGeometry>
</gml:geometryProperty>
</app:Place>
</app:placeMember>
</app:Places>"""
def run_GML_write_test:
output_path = "mapinfo.mif"
standard_schematics_folder = "writing"
app_scheme_path = "temp.xsd"
with open(app_scheme_path, "w") as f:
f.write(self.xsd)
input_stream = io.BytesIO(self.initial_data.encode("utf-8"))
output_stream = io.BytesIO()
with VectorLayer.open(AbstractPath.from_stream(input_stream), Drivers.geo_json) as lyr:
layer = cast(VectorLayer, lyr)
gml_options = GmlOptions()
gml_options.application_namespace = "http://www.mydomain.net/myapp"
# For .NET Core (Python equivalent)
gml_options.schema_location = \
f"http://www.w3.org/XML/1998/namespace { os.path.join(standard_schematics_folder, 'xml.xsd') }" + \
f" http://www.w3.org/1999/xlink {standard_schematics_folder}\\xlink.xsd " + \
f" http://www.opengis.net/gml {standard_schematics_folder}\\geometry.xsd " + \
f" http://www.opengis.net/gml {standard_schematics_folder}\\feature.xsd " + \
f" http://www.mydomain.net/myapp {app_scheme_path}"
saving_options = SavingOptions()
saving_options.driver_options = gml_options
saving_options.spatial_reference_system = SpatialReferenceSystem.wgs84
layer.save_to(AbstractPath.from_stream(output_stream), Drivers.gml, saving_options)GISPYTHON-18. Support AutoId For SaveTo Method
# Create GeoJsonOptions with AutoId setting
options = GeoJsonOptions()
options.auto_id = AutoIds.NUMBER
# Create a memory stream (in Python we'll use a file path or BytesIO)
# Note: Aspose.GIS for Python may not directly support MemoryStream like C#
# So we'll use a temporary file path for this example
output_path = "output.geojson"
# Create the vector layer
with VectorLayer.create(output_path, Drivers.geo_json, options) as layer:
# First feature
f = layer.construct_feature()
f.geometry = Point(10, 20)
layer.add(f)
# Second feature
f = layer.construct_feature()
f.geometry = Point(30, 40)
layer.add(f)
print("GeoJSON with IDs auto-update created successfully")GISPYTHON-19. Support of BigTiff GeoTiff files
input_path = "bigtiff_resized.tif"
# Open the GeoTIFF layer
with Drivers.geo_tiff.open_layer(input_path) as lyr:
layer = cast(RasterLayer, lyr)
dump = layer.get_values_dump(RasterRect(0, 0, 688, 832))
# Just random tests of dump
assert -10000 == layer.no_data_values.as_integer(0)
assert layer.no_data_values.as_integer(0) == dump[266].as_integer(0)
assert abs(79.5961761474609 - dump[267].as_double(0)) < 0.000001
assert abs(79.6245346069336 - dump[268].as_double(0)) < 0.000001
# Assert SRS
epsg_32611 = SpatialReferenceSystem.create_from_epsg(32611)
assert str(epsg_32611) == str(layer.spatial_reference_system)
assert epsg_32611.is_equivalent(layer.spatial_reference_system)
# Assert Properties
assert abs(402520.7656 - layer.upper_left_x) < 0.001
assert abs(3765444.967 - layer.upper_left_y) < 0.001
assert 1 == layer.band_count
# band 0
stats0 = layer.get_statistics(0, True)
assert abs(96.760978698730469 - stats0.max) < 0.000001
assert abs(73.536659240722656 - stats0.min) < 0.000001
assert abs(80.511803399559511 - stats0.mean) < 0.000001
assert abs(29675845.61504364 - stats0.sum) < 0.000001
assert 368590 == stats0.count
cell = layer.cell_size
assert abs(0.74986191860469176 - cell.width) < 0.000001
assert abs(0.75010661057715944 - cell.height) < 0.000001
assert abs(0.74986191860469176 - cell.scale_x) < 0.000001
assert abs(-0.75010661057715944 - cell.scale_y) < 0.000001
assert abs(0.0 - cell.skew_x) < 0.000001
assert abs(0.0 - cell.skew_y) < 0.000001GISPYTHON-20. Fix For Writing Gdb File With HasZ (HasM) Options
output_path = "output.gdb"
# Create dataset and layers
with Dataset.create(output_path, Drivers.file_gdb) as dataset:
# Create a layer without Z/M values
options = FileGdbOptions()
options.has_z = False
options.has_m = False
srs = SpatialReferenceSystem.wgs72
with dataset.create_layer("point_layer", options, srs) as layer:
feature = layer.construct_feature()
feature.geometry = Point(1, 2)
layer.add(feature)
# Create a layer with Z/M values (default FileGdbOptions has Z/M enabled)
with dataset.create_layer("point_ZM_layer", srs) as layer:
feature = layer.construct_feature()
feature.geometry = Point(1, 2, 3, 4) # x, y, z, m
layer.add(feature)
# Verify the created dataset
with Dataset.open(output_path, Drivers.file_gdb) as dataset:
assert 2 == dataset.layers_count
assert GeometryType.POINT == dataset.open_layer_at(0, None).geometry_type
assert GeometryType.POINT == dataset.open_layer_at(1, None).geometry_type
with dataset.open_layer("point_layer", None) as layer:
assert 1 == layer.count
expected_point = Point(1, 2)
expected_point.spatial_reference_system = SpatialReferenceSystem.wgs72
assert expected_point == layer[0].geometry
with dataset.open_layer("point_ZM_layer", None) as layer:
assert 1 == layer.count
expected_point_zm = Point(1, 2, 3, 4)
expected_point_zm.spatial_reference_system = SpatialReferenceSystem.wgs72
assert expected_point_zm == layer[0].geometry