Read ground_sample_distance from normalized raster

CHANGELOG.md

@@ -73,7 +73,7 @@
 - Fix [GET Workspace Layer](doc/rest.md#get-workspace-layer) documentation, where was incorrectly `style` item instead of `sld`.
 - [#167](https://github.com/LayerManager/layman/issues/167) New metadata property [`spatial_resolution`](doc/metadata.md#spatial_resolution) is available. It has one of two subproperties:
   - `scale_denominator` used for vector data
-  - `ground_sample_distance` used for raster data (not yet filled)
+  - `ground_sample_distance` used for raster data
 - Metadata property `scale_denominator` was removed. Its value is now accessible as subproperty of new [`spatial_resolution`](doc/metadata.md#spatial_resolution) metadata property.
 
 ## v1.13.2

doc/metadata.md

@@ -244,7 +244,7 @@ Multiplicity: 1
 
 Shape: Object with one of following keys:
 - *scale_denominator*: Integer. Scale denominator, used for vector data, guessed from distances between vertices of line and polygon features.
-- *ground_sample_distance*: Object. Ground sample distance, used for raster data.  
+- *ground_sample_distance*: Object. Ground sample distance, used for raster data, read from normalized raster.  
   Keys:
   - **value**: Float. Value of ground sample distance.
   - **uom**: String. Unit of measurement of ground sample distance.

src/layman/layer/filesystem/gdal.py

@@ -289,3 +289,11 @@ def get_bbox(workspace, layer):
     miny = maxy + geo_transform[5] * data.RasterYSize
     result = (minx, miny, maxx, maxy)
     return result
+
+
+def get_normalized_ground_sample_distance(workspace, layer):
+    filepath = get_normalized_raster_layer_main_filepath(workspace, layer)
+    pixel_size = get_pixel_size(filepath)
+    abs_pixel_size = [abs(size) for size in pixel_size]
+    distance_value = sum(abs_pixel_size) / len(abs_pixel_size)
+    return distance_value

src/layman/layer/micka/csw.py

@@ -9,6 +9,7 @@
 from layman.common.filesystem.uuid import get_publication_uuid_file
 from layman.common.micka import util as common_util
 from layman.common import language as common_language, empty_method, empty_method_returns_none, bbox as bbox_util
+from layman.layer.filesystem import gdal
 from layman.layer.filesystem.uuid import get_layer_uuid
 from layman.layer import db
 from layman.layer.geoserver import wms
@@ -150,8 +151,12 @@ def get_template_path_and_values(workspace, layername, http_method=None):
         }
     elif file_type == settings.FILE_TYPE_RASTER:
         languages = []
+        distance_value = gdal.get_normalized_ground_sample_distance(workspace, layername)
         spatial_resolution = {
-            'ground_sample_distance': None,
+            'ground_sample_distance': {
+                'value': distance_value,
+                'uom': 'm',  # EPSG:3857
+            }
         }
     else:
         raise NotImplementedError(f"Unknown file type: {file_type}")

test_tools/data/micka/rest_test_filled_raster_template.xml

@@ -0,0 +1,277 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<gmd:MD_Metadata xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://schemas.opengis.net/iso/19139/20060504/gmd/metadataEntity.xsd http://www.isotc211.org/2005/gmx http://schemas.opengis.net/iso/19139/20060504/gmx/gmx.xsd">
+  <gmd:fileIdentifier>
+    <gco:CharacterString>m-81c0debe-b2ea-4829-9b16-581083b29907</gco:CharacterString>
+  </gmd:fileIdentifier>
+  <gmd:language>
+    <gmd:LanguageCode codeListValue="eng" codeList="http://www.loc.gov/standards/iso639-2/">eng</gmd:LanguageCode>
+  </gmd:language>
+  <gmd:hierarchyLevel>
+    <gmd:MD_ScopeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
+  </gmd:hierarchyLevel>
+  <gmd:contact>
+    <gmd:CI_ResponsibleParty>
+      <gmd:organisationName gco:nilReason="unknown"/>
+      <gmd:contactInfo>
+        <gmd:CI_Contact>
+          <gmd:address>
+            <gmd:CI_Address>
+              <gmd:electronicMailAddress gco:nilReason="unknown"/>
+            </gmd:CI_Address>
+          </gmd:address>
+          <gmd:onlineResource>
+            <gmd:CI_OnlineResource>
+              <gmd:linkage gco:nilReason="unknown"/>
+            </gmd:CI_OnlineResource>
+          </gmd:onlineResource>
+        </gmd:CI_Contact>
+      </gmd:contactInfo>
+      <gmd:role>
+        <gmd:CI_RoleCode codeListValue="pointOfContact" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_RoleCode">pointOfContact</gmd:CI_RoleCode>
+      </gmd:role>
+    </gmd:CI_ResponsibleParty>
+  </gmd:contact>
+  <gmd:dateStamp>
+    <gco:Date>2007-05-25</gco:Date>
+  </gmd:dateStamp>
+  <gmd:metadataStandardName>
+    <gco:CharacterString>ISO 19115/INSPIRE_TG2/CZ4</gco:CharacterString>
+  </gmd:metadataStandardName>
+  <gmd:metadataStandardVersion>
+    <gco:CharacterString>2003/cor.1/2006</gco:CharacterString>
+  </gmd:metadataStandardVersion>
+  <gmd:referenceSystemInfo>
+    <gmd:MD_ReferenceSystem>
+      <gmd:referenceSystemIdentifier>
+        <gmd:RS_Identifier>
+          <gmd:code>
+            <gmx:Anchor xlink:href="http://www.opengis.net/def/crs/EPSG/0/4326">EPSG:4326</gmx:Anchor>
+          </gmd:code>
+        </gmd:RS_Identifier>
+      </gmd:referenceSystemIdentifier>
+    </gmd:MD_ReferenceSystem>
+  </gmd:referenceSystemInfo>
+  <gmd:referenceSystemInfo>
+    <gmd:MD_ReferenceSystem>
+      <gmd:referenceSystemIdentifier>
+        <gmd:RS_Identifier>
+          <gmd:code>
+            <gmx:Anchor xlink:href="http://www.opengis.net/def/crs/EPSG/0/3857">EPSG:3857</gmx:Anchor>
+          </gmd:code>
+        </gmd:RS_Identifier>
+      </gmd:referenceSystemIdentifier>
+    </gmd:MD_ReferenceSystem>
+  </gmd:referenceSystemInfo>
+  <gmd:referenceSystemInfo>
+    <gmd:MD_ReferenceSystem>
+      <gmd:referenceSystemIdentifier>
+        <gmd:RS_Identifier>
+          <gmd:code>
+            <gmx:Anchor xlink:href="http://www.opengis.net/def/crs/EPSG/0/5514">EPSG:5514</gmx:Anchor>
+          </gmd:code>
+        </gmd:RS_Identifier>
+      </gmd:referenceSystemIdentifier>
+    </gmd:MD_ReferenceSystem>
+  </gmd:referenceSystemInfo>
+  <gmd:identificationInfo>
+    <gmd:MD_DataIdentification>
+      <gmd:citation>
+        <gmd:CI_Citation>
+          <gmd:title>
+            <gco:CharacterString>post_tif_rgba_4326</gco:CharacterString>
+          </gmd:title>
+          <gmd:date>
+            <gmd:CI_Date>
+              <gmd:date>
+                <gco:Date>2019-12-07</gco:Date>
+              </gmd:date>
+              <gmd:dateType>
+                <gmd:CI_DateTypeCode codeListValue="publication" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode">publication</gmd:CI_DateTypeCode>
+              </gmd:dateType>
+            </gmd:CI_Date>
+          </gmd:date>
+          <gmd:identifier>
+            <gmd:MD_Identifier>
+              <gmd:code>
+                <gmx:Anchor xlink:href="http://enjoychallenge.tech/rest/workspaces/test_workspace/layers/post_tif_rgba_4326">post_tif_rgba_4326</gmx:Anchor>
+              </gmd:code>
+            </gmd:MD_Identifier>
+          </gmd:identifier>
+        </gmd:CI_Citation>
+      </gmd:citation>
+      <gmd:abstract gco:nilReason="unknown"/>
+      <gmd:pointOfContact>
+        <gmd:CI_ResponsibleParty>
+          <gmd:organisationName gco:nilReason="unknown"/>
+          <gmd:contactInfo>
+            <gmd:CI_Contact>
+              <gmd:address>
+                <gmd:CI_Address>
+                  <gmd:electronicMailAddress gco:nilReason="unknown"/>
+                </gmd:CI_Address>
+              </gmd:address>
+              <gmd:onlineResource>
+                <gmd:CI_OnlineResource>
+                  <gmd:linkage gco:nilReason="unknown"/>
+                </gmd:CI_OnlineResource>
+              </gmd:onlineResource>
+            </gmd:CI_Contact>
+          </gmd:contactInfo>
+          <gmd:role>
+            <gmd:CI_RoleCode codeListValue="custodian" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_RoleCode">custodian</gmd:CI_RoleCode>
+          </gmd:role>
+        </gmd:CI_ResponsibleParty>
+      </gmd:pointOfContact>
+      <gmd:graphicOverview>
+        <gmd:MD_BrowseGraphic>
+          <gmd:fileName>
+            <gco:CharacterString>http://enjoychallenge.tech/rest/workspaces/test_workspace/layers/post_tif_rgba_4326/thumbnail</gco:CharacterString>
+          </gmd:fileName>
+          <gmd:fileType>
+            <gco:CharacterString>PNG</gco:CharacterString>
+          </gmd:fileType>
+        </gmd:MD_BrowseGraphic>
+      </gmd:graphicOverview>
+      <gmd:descriptiveKeywords>
+        <gmd:MD_Keywords>
+          <gmd:keyword gco:nilReason="unknown"/>
+          <gmd:thesaurusName>
+            <gmd:CI_Citation>
+              <gmd:title>
+                <gmx:Anchor xlink:href="http://www.eionet.europa.eu/gemet/inspire_themes">GEMET - INSPIRE themes, version 1.0</gmx:Anchor>
+              </gmd:title>
+              <gmd:date>
+                <gmd:CI_Date>
+                  <gmd:date>
+                    <gco:Date>2008-06-01</gco:Date>
+                  </gmd:date>
+                  <gmd:dateType>
+                    <gmd:CI_DateTypeCode codeListValue="publication" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode">publication</gmd:CI_DateTypeCode>
+                  </gmd:dateType>
+                </gmd:CI_Date>
+              </gmd:date>
+            </gmd:CI_Citation>
+          </gmd:thesaurusName>
+        </gmd:MD_Keywords>
+      </gmd:descriptiveKeywords>
+      <gmd:resourceConstraints>
+        <gmd:MD_LegalConstraints>
+          <gmd:accessConstraints>
+            <gmd:MD_RestrictionCode codeListValue="otherRestrictions" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_RestrictionCode">otherRestrictions</gmd:MD_RestrictionCode>
+          </gmd:accessConstraints>
+          <gmd:otherConstraints>
+            <gmx:Anchor xlink:href="http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations">Bez omezení</gmx:Anchor>
+          </gmd:otherConstraints>
+        </gmd:MD_LegalConstraints>
+      </gmd:resourceConstraints>
+      <gmd:resourceConstraints>
+        <gmd:MD_LegalConstraints>
+          <gmd:useConstraints>
+            <gmd:MD_RestrictionCode codeListValue="otherRestrictions" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_RestrictionCode">otherRestrictions</gmd:MD_RestrictionCode>
+          </gmd:useConstraints>
+          <gmd:otherConstraints>
+            <gmx:Anchor xlink:href="http://inspire.ec.europa.eu/metadata-codelist/ConditionsApplyingToAccessAndUse/noConditionsApply">Žádné podmínky neplatí</gmx:Anchor>
+          </gmd:otherConstraints>
+        </gmd:MD_LegalConstraints>
+      </gmd:resourceConstraints>
+      <gmd:spatialRepresentationType>
+        <gmd:MD_SpatialRepresentationTypeCode codeListValue="vector" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_SpatialRepresentationTypeCode">vector</gmd:MD_SpatialRepresentationTypeCode>
+      </gmd:spatialRepresentationType>
+      <gmd:spatialResolution>
+        <gmd:MD_Resolution>
+          <gmd:distance>
+            <gco:Distance uom="m">0.043745341126665845</gco:Distance>
+          </gmd:distance>
+        </gmd:MD_Resolution>
+      </gmd:spatialResolution>
+      <gmd:language gco:nilReason="unknown"/>
+      <gmd:characterSet>
+        <gmd:MD_CharacterSetCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_CharacterSetCode" codeListValue="utf8">utf8</gmd:MD_CharacterSetCode>
+      </gmd:characterSet>
+      <gmd:topicCategory gco:nilReason="unknown"/>
+      <gmd:extent>
+        <gmd:EX_Extent>
+          <gmd:geographicElement>
+            <gmd:EX_GeographicBoundingBox>
+              <gmd:westBoundLongitude>
+                <gco:Decimal>15.08622670719884</gco:Decimal>
+              </gmd:westBoundLongitude>
+              <gmd:eastBoundLongitude>
+                <gco:Decimal>15.086453058544048</gco:Decimal>
+              </gmd:eastBoundLongitude>
+              <gmd:southBoundLatitude>
+                <gco:Decimal>50.665636410141985</gco:Decimal>
+              </gmd:southBoundLatitude>
+              <gmd:northBoundLatitude>
+                <gco:Decimal>50.66575821142854</gco:Decimal>
+              </gmd:northBoundLatitude>
+            </gmd:EX_GeographicBoundingBox>
+          </gmd:geographicElement>
+        </gmd:EX_Extent>
+      </gmd:extent>
+    </gmd:MD_DataIdentification>
+  </gmd:identificationInfo>
+  <gmd:distributionInfo>
+    <gmd:MD_Distribution>
+      <gmd:transferOptions>
+        <gmd:MD_DigitalTransferOptions>
+          <gmd:onLine>
+            <gmd:CI_OnlineResource>
+              <gmd:linkage>
+                <gmd:URL>http://localhost:8000/geoserver/test_workspace_wms/ows?SERVICE=WMS&amp;REQUEST=GetCapabilities&amp;VERSION=1.3.0&amp;LAYERS=post_tif_rgba_4326</gmd:URL>
+              </gmd:linkage>
+              <gmd:protocol>
+                <gmx:Anchor xlink:href="https://services.cuzk.cz/registry/codelist/OnlineResourceProtocolValue/OGC:WMS-1.3.0-http-get-capabilities">OGC:WMS-1.3.0-http-get-capabilities</gmx:Anchor>
+              </gmd:protocol>
+              <gmd:function>
+                <gmd:CI_OnLineFunctionCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
+              </gmd:function>
+            </gmd:CI_OnlineResource>
+          </gmd:onLine>
+          <gmd:onLine>
+            <gmd:CI_OnlineResource>
+              <gmd:linkage>
+                <gmd:URL>http://localhost:8000/geoserver/test_workspace/wfs?SERVICE=WFS&amp;REQUEST=GetCapabilities&amp;VERSION=2.0.0&amp;LAYERS=post_tif_rgba_4326</gmd:URL>
+              </gmd:linkage>
+              <gmd:protocol>
+                <gmx:Anchor xlink:href="https://services.cuzk.cz/registry/codelist/OnlineResourceProtocolValue/OGC:WFS-2.0.0-http-get-capabilities">OGC:WFS-2.0.0-http-get-capabilities</gmx:Anchor>
+              </gmd:protocol>
+              <gmd:function>
+                <gmd:CI_OnLineFunctionCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
+              </gmd:function>
+            </gmd:CI_OnlineResource>
+          </gmd:onLine>
+          <gmd:onLine>
+            <gmd:CI_OnlineResource>
+              <gmd:linkage>
+                <gmd:URL>http://enjoychallenge.tech/rest/workspaces/test_workspace/layers/post_tif_rgba_4326</gmd:URL>
+              </gmd:linkage>
+              <gmd:protocol>
+                <gmx:Anchor xlink:href="https://services.cuzk.cz/registry/codelist/OnlineResourceProtocolValue/WWW:LINK-1.0-http--link">WWW:LINK-1.0-http--link</gmx:Anchor>
+              </gmd:protocol>
+              <gmd:function>
+                <gmd:CI_OnLineFunctionCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
+              </gmd:function>
+            </gmd:CI_OnlineResource>
+          </gmd:onLine>
+        </gmd:MD_DigitalTransferOptions>
+      </gmd:transferOptions>
+    </gmd:MD_Distribution>
+  </gmd:distributionInfo>
+  <gmd:dataQualityInfo>
+    <gmd:DQ_DataQuality>
+      <gmd:scope>
+        <gmd:DQ_Scope>
+          <gmd:level>
+            <gmd:MD_ScopeCode codeListValue="dataset" codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_ScopeCode">dataset</gmd:MD_ScopeCode>
+          </gmd:level>
+        </gmd:DQ_Scope>
+      </gmd:scope>
+      <gmd:lineage>
+        <gmd:LI_Lineage>
+          <gmd:statement gco:nilReason="unknown"/>
+        </gmd:LI_Lineage>
+      </gmd:lineage>
+    </gmd:DQ_DataQuality>
+  </gmd:dataQualityInfo>
+</gmd:MD_Metadata>

tests/static_publications/__init__.py

@@ -274,6 +274,10 @@
             'thumbnail': '/code/test_tools/data/thumbnail/raster_layer_tif_rgba_4326.png',
             'file_type': settings.FILE_TYPE_RASTER,
             'style_type': 'sld',
+            'micka_xml': {'filled_template': 'test_tools/data/micka/rest_test_filled_raster_template.xml',
+                          'diff_lines': MICKA_XML_LAYER_DIFF_LINES,
+                          'diff_lines_len': 29,
+                          },
         },
     },
     (COMMON_WORKSPACE, LAYER_TYPE, 'post_tiff'): {