add scale/resolution to spatial section

docs/content/reference/mcf.md

@@ -129,6 +129,9 @@ Property Name|Mandatory/Optional|Description|Example|Reference
 -------------|------------------|-----------|-------|---------:
 datatype|Mandatory|method used to represent geographic information in the dataset (must be one of 'vector', 'grid', 'textTable', 'tin', 'stereoModel', 'video')|vector|Section B.5.26
 geomtype|Mandatory|name of point or vector objects used to locate zero-, one-, two-, or threedimensional spatial locations in the dataset (must be one of 'complex', 'composite', 'curve', 'point', 'solid', 'surface')|point|ISO 19115:2003 B.5.15
+denominators|Optional|level of detail expressed as the scale of a comparable hardcopy map or chart|5000|ISO 19115:2003 Section B.2.2.5
+resolution.distance|Optional|ground sample distance|100|ISO 19115:2003 Section B.2.2.5
+resolution.uom|Optional|unit of measure of the distance|m|ISO 19115:2003 Section B.2.2.5
 
 ### `identification`
 

pygeometa/schemas/iso19139/__init__.py

@@ -84,6 +84,7 @@ def import_(self, metadata: str) -> dict:
                 'version': '1.0',
             },
             'metadata': {},
+            'spatial': {},
             'identification': {},
             'contact': {},
             'distribution': {}
@@ -158,7 +159,22 @@ def import_(self, metadata: str) -> dict:
 
         mcf['identification']['extents']['temporal'].append(temp_extent)
 
-        if identification.accessconstraints:
+        if hasattr(identification, 'denominators'):
+            mcf['spatial']['denominators'] = identification.denominators
+
+        if hasattr(identification, 'distance'):
+            mcf['spatial']['resolution'] = []
+            for k, v in enumerate(identification.distance):
+                uom = ''
+                if hasattr(identification, 'uom') and len(identification.uom) > k: # noqa
+                    uom = identification.uom[k]
+                mcf['spatial']['resolution'].append({'distance': v,
+                                                     'uom': uom})
+
+        if hasattr(identification, 'spatialrepresentationtype') and len(identification.spatialrepresentationtype) > 0:  # noqa
+            mcf['spatial']['datatype'] = identification.spatialrepresentationtype[0] # noqa
+
+        if hasattr(identification, 'accessconstraints'):
             mcf['identification']['accessconstraints'] = identification.accessconstraints[0]  # noqa
 
         mcf['identification']['status'] = identification.status

pygeometa/schemas/iso19139/main.j2

@@ -247,6 +247,28 @@
       <gmd:spatialRepresentationType>
         <gmd:MD_SpatialRepresentationTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_SpatialRepresentationTypeCode" codeSpace="ISOTC211/19115" codeListValue="{{ record['spatial']['datatype'] }}">{{ record['spatial']['datatype'] }}</gmd:MD_SpatialRepresentationTypeCode>
       </gmd:spatialRepresentationType>
+      {% for res in record['spatial']['resolutions'] %}
+      <gmd:spatialResolution>
+        <gmd:MD_Resolution>
+          <gmd:distance>
+            <gco:Distance uom="{{ res['uom'] }}">{{ res['distance'] }}</gco:Distance>
+          </gmd:distance>
+        </gmd:MD_Resolution>
+      </gmd:spatialResolution>
+      {% endfor %}
+      {% for d in record['spatial']['denominators']  %}
+      <gmd:spatialResolution>
+        <gmd:MD_Resolution>
+          <gmd:equivalentScale>
+            <gmd:MD_RepresentativeFraction>
+              <gmd:denominator>
+                <gco:Integer>{{ d }}</gco:Integer>
+              </gmd:denominator>
+            </gmd:MD_RepresentativeFraction>
+          </gmd:equivalentScale>
+        </gmd:MD_Resolution>
+      </gmd:spatialResolution>
+      {% endfor %}
       {% if record['identification']['language'] in ['inapplicable', 'missing', 'template', 'unknown', 'withheld'] %}
       <gmd:language gco:nilReason="{{ record['identification']['language'] }}"/>
       {% else %}

pygeometa/schemas/mcf/core.yaml

@@ -89,6 +89,27 @@ properties:
                     - point
                     - solid
                     - surface
+            denominators:
+                type: array
+                description:  one or two (min-max) denominators to indicate the scale of the resource
+                items:
+                    type: integer
+            resolutions:
+                type: array
+                description: one or two (min-max) distance values + uom to indicate the resolution of the resource
+                properties:
+                    distance:
+                        type: number
+                    uom: 
+                        type: string
+                        description: the unit of measure of the distance value 
+                        enum:
+                            - m
+                            - km
+                            - feet
+                            - mile
+                            - degree
+                            - parsec
         required:
             - datatype
             - geomtype

tests/md-SMJP01RJTD-gmd.xml

@@ -315,6 +315,20 @@
           </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"/>
+      </gmd:spatialRepresentationType>
+      <gmd:spatialResolution>
+        <gmd:MD_Resolution>
+          <gmd:equivalentScale>
+            <gmd:MD_RepresentativeFraction>
+              <gmd:denominator>
+                <gco:Integer>10000</gco:Integer>
+              </gmd:denominator>
+            </gmd:MD_RepresentativeFraction>
+          </gmd:equivalentScale>
+        </gmd:MD_Resolution>
+      </gmd:spatialResolution>
       <gmd:language>
         <gco:CharacterString>eng</gco:CharacterString>
       </gmd:language>