[mapserver-users] Misusing default TIME values in WMS?

[John D. Evans]

Hi all,

My MapServer WMS service seems to be misusing the default times I have 
defined on map layers. It (correctly) uses the default time for GetMap 
requests that specify no time at all; however it (incorrectly) uses this 
time also for requests that specify a time outside the layer's available 
times. (For, say, time=2017-09-21, it returns today's image... which is 
very confusing.)

The WMS Capabilities doc shows <Extent name="time" ... nearestValue="0"> 
which is what I want -- but it doesn't match the above behavior. Excerpt:

         <Layer queryable="0" opaque="0" cascaded="0">
           <Name>iicmocp_time_idx</Name>
           <Title>Time Index for iicmocp</Title>
           <SRS>EPSG:4326</SRS>
         </Layer>
         <Layer queryable="0" opaque="0" cascaded="0">
           <Name>iicmocp_daily</Name>
           <Title>csppnppviirssdr iicmocp daily</Title>
           <Abstract>Some important description here...</Abstract>
           <SRS>EPSG:4326</SRS>
           <Dimension name="time" units="ISO8601"/>
           <Extent name="time" default="2013-06-11"
    nearestValue="0">2013-06-09/2013-06-11T09:16/P1D</Extent>
         </Layer>

Is this a bug in mapserv? Or have I just misconfigured my time index? 
(Mapfile excerpts below.)

Thanks.

   - John Evans


p.s. My mapfile has the following details for these layers:

       LAYER
         NAME "iicmocp_daily"
         TYPE RASTER
         STATUS off
         OFFSITE 0 0 0
         TRANSPARENCY 80
         TILEINDEX "iicmocp_time_idx"
         TILEITEM "tiffpath"
         METADATA
           "wms_srs" "EPSG:4326"
           "wms_title" "csppnppviirssdr iicmocp daily"
           "wms_layer_group" "/csppnppviirssdr iicmocp imagery"
           "wms_abstract" "Some important description here..."
           "wms_timeextent" "2013-06-09/2013-06-11T09:16/P1D"
           "wms_timedefault" "2013-06-11"
           "wms_timeitem" "filedate"
           "wms_timeformat" "YYYY-MM-DD,YYYY-MM-DDTHH,YYYY-MM-DDTHH:MM"
         END
       END

       LAYER
         NAME "iicmocp_time_idx"
         TYPE POLYGON
         DATA  "geom from iicmocp"
         METADATA
           "wms_title" "Time Index for iicmocp"
           "wms_srs" "EPSG:4326"
         END
         CONNECTIONTYPE POSTGIS
         CONNECTION "host=localhost port=5432 dbname=mapdemo ..."
       END

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