Is the label element useful? #204

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1. Malvoz

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   on Aug 12, 2021
2. prushforth commented on Aug 12, 2021

   

   prushforth

   on Aug 12, 2021

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   It bears thinking about; there are cases where the input and select are presented to the user in the layer control, and so should be labelled. OTOH location inputs are used (so far) only as proxies for the extremities of the map extent. They generate locations based on the corresponding location of the map window.

   I could see them being used in future to directly provide an input control for feature geometries. In that case they would have to be labelable as well.
3. Malvoz commented on Aug 12, 2021

   

   Malvoz

   on Aug 12, 2021

   Last edited by Malvoz

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   In https://maps4html.org/experiments/datacube/, the datacube/msi.mapml layer source contains various types of input and a select:

   <extent units="CBMTILE">
     <input name="z" type="zoom" value="25" min="4" max="25" />
     <input name="xmin" type="location" rel="map" position="top-left" axis="easting" units="pcrs" min="-6105785.728719063" max="6174630.753072981" />
     <input name="ymin" type="location" rel="map" position="bottom-left" axis="northing" units="pcrs" min="-1692155.9568245453" max="4482681.2054050295" />
     <input name="xmax" type="location" rel="map" position="top-right" axis="easting" units="pcrs" min="-6105785.728719063" max="6174630.753072981" />
     <input name="ymax" type="location" rel="map" position="top-left" axis="northing" units="pcrs" min="-1692155.9568245453" max="4482681.2054050295" />
     <input name="w" type="width" min="0" max="10000" />
     <input name="h" type="height" min="0" max="10000" />
     <select id="tie" name="time">
       <option>2000-08-15T00:00:00Z</option>
       ...
     </select>
     <link
       tref="https://datacube.services.geo.ca/ows/msi?SERVICE=WMS&amp;REQUEST=GetMap&amp;FORMAT=image/png&amp;TRANSPARENT=TRUE&amp;STYLES=msi-color&amp;VERSION=1.3.0&amp;LAYERS=msi&amp;WIDTH={w}&amp;HEIGHT={h}&amp;CRS=EPSG:3978&amp;BBOX={xmin},{ymin},{xmax},{ymax}&amp;TIME={time}"
       rel="image"
     />
   </extent>

   where <select> is presented to the user (under the Time setting in the layer control - clarifying for others). Other input types such as width and height I don't think would make much sense to be present to users. So there seem to be some inconsistency there. Can/should these elements be styled/stylable from within the mapml file?

   I think there are some concerns, and experts may require us to separate these elements from corresponding controls to be presented to users. Time will tell.
4. prushforth

   added

   bug

   on May 26, 2023