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Spatial resolution: equivalent scale

Name Spatial resolution: equivalent scale
Definition Spatial resolution, equivalent scale, refers to the level of detail of data expressed as the denominator of the scale of the printed map with which the comparison is made.
Obligation
  • dataset or dataset series: conditional; mandatory for the dataset or dataset series if the scale equivalent can be specified
  • service: conditional; mandatory if there is limitation of spatial resolution for the service observed.
Multiplicity [0..*]
Example 25000 (for map scale 1:25 000)
25000
50000 (for scale intervals from 1:25 000 to 1:50 000)
Digital data of cadastral parcels and cadastral municipalities were created by translating analog scale plans from 1: 500 to 1: 5808 into digital form. (Example of stating spatial resolution of the service in the Resource abstract element)
Spatial resolution equivalent scale is most often specified for maps and products made on the basis of maps. It is generally the positive integer value of map scale denominator that is indicated for this element, i.e. 1000 for the map scale 1:1000. If two values are stated, spatial resolution is the value limited by those two values. For example, "25000, 50000" assumes the spatial resolution interval to be between scales 1:25 000 and 1:50 000. If data have several scale intervals, the smallest scale is stated.

Technical data
 
INSPIRE equivalent Spatial resolution: scale
Comparison with INSPIRE ekvivalent
ISO equivalent [60] equivalentScale
Comparison with ISO ekvivalent
XPath identificationInfo[1]/*/spatialResolution/*/equivalentScale/*/denominator
Data type integer
Domain positive integer
Implementation instructions If spatial resolution: equivalent scale is not specified, spatial resolution: distance must be specified. Either the spatial resolution: equivalent scale or the spatial resolution: distance is documented. Both elements must not be documented.


Encoding example 1: Equivalent scale
 
<gmd:MD_Metadata…
...
     <gmd:identificationInfo>
...
         <gmd:MD_DataIdentification>
...
             <gmd:spatialResolution>
                 <gmd:MD_Resolution>
                     <gmd:equivalentScale>
                         <gmd:MD_RepresentativeFraction>
                             <gmd:denominator>
                                 <gco:Integer>25000</gco:Integer>
                             </gmd:denominator>
                         </gmd:MD_RepresentativeFraction>
                     </gmd:equivalentScale>
                 </gmd:MD_Resolution>
             </gmd:spatialResolution>
...
         </gmd:MD_DataIdentification>
...
     </gmd:identificationInfo>
...
</gmd:MD_Metadata>

Encoding example 2: Equivalent scale as an interval
 
<gmd:MD_Metadata…
...
     <gmd:identificationInfo>
...
         <gmd:MD_DataIdentification>
...
             <gmd:spatialResolution>
                 <gmd:MD_Resolution>
                     <gmd:equivalentScale>
                         <gmd:MD_RepresentativeFraction>
                             <gmd:denominator>
                                 <gco:Integer>25000</gco:Integer>
                             </gmd:denominator>
                         </gmd:MD_RepresentativeFraction>
                     </gmd:equivalentScale>
                 </gmd:MD_Resolution>
             </gmd:spatialResolution>
             <gmd:spatialResolution>
                 <gmd:MD_Resolution>
                     <gmd:equivalentScale>
                         <gmd:MD_RepresentativeFraction>
                             <gmd:denominator>
                                 <gco:Integer>50000</gco:Integer>
                             </gmd:denominator>
                         </gmd:MD_RepresentativeFraction>
                     </gmd:equivalentScale>
                 </gmd:MD_Resolution>
             </gmd:spatialResolution>
...
         </gmd:MD_DataIdentification>
...
     </gmd:identificationInfo>
...
</gmd:MD_Metadata>