[mapserver-users] WMS-T support for vector data using OGR

[Even Rouault]

Le lundi 09 juin 2014 22:35:48, Hari Pradhan a écrit :
> No Evan. My requirement says I have a set of individual shape files taken
> at different time frame. Let's say shape1.shp at time t1 , shape2.shp at
> time t2,.. shapen.shp at time tn. Using these shape files, I have to create
> tileindex file with location and time field, location being the path of
> each shape file and time field being the time at which that individual
> shape file was captured. I have used ogrtindex.exe to create tile index
> file.
> 

Hari,

I understand your requirements. I was just giving you my understanding of the 
current state of the code of MapServer. Doing what you want to do would 
require further developments in MapServer.

Even

> 
> 
> On Mon, Jun 9, 2014 at 3:29 PM, Even Rouault <even.rouault at mines-paris.org>
> 
> wrote:
> > Le lundi 09 juin 2014 22:15:56, Hari Pradhan a écrit :
> > > Thanks Even. I tried as you said by separating a layer with the tile
> > 
> > index
> > 
> > > and the vector layer as:
> > > 
> > > # Tile Index
> > > LAYER
> > > STATUS ON
> > > NAME "time_idx"
> > > DATA "vector2.shp"
> > > TYPE POLYGON
> > > #CONNECTIONTYPE OGR
> > > END
> > > 
> > > LAYER
> > > NAME "states"
> > > DEBUG 5
> > > TYPE POLYGON
> > > TILEINDEX "time_idx"
> > > TILEITEM "Location"
> > > 
> > > STATUS ON
> > > 
> > > METADATA
> > > 
> > >   "wms_title"    "states"
> > >   "wms_include_items"   "all"
> > >   "wms_dataurl_format" "text/HTML"
> > >   "ows_include_items"     "all"
> > >   "wms_exceptions_format" "application/vnd.ogc.se_xml"
> > >   'wms_srs'             'EPSG:42304'
> > >   "wms_timeextent" "20070301/20070302"
> > >   "wms_timeitem" "Time"
> > >   "wms_timedefault" "20070302"
> > > 
> > > END
> > > 
> > > #FILTER "Time = '20070302'"
> > > 
> > > PROJECTION
> > > 
> > >   "init=epsg:42304"
> > > 
> > > END
> > > 
> > > CLASS
> > > 
> > >   NAME       "The Upper Great Lakes States"
> > >   STYLE
> > > 
> > > COLOR        232 232 232
> > > OUTLINECOLOR 32 32 32
> > > 
> > >   END
> > > 
> > > END
> > > END #Layer
> > > 
> > > This also gives an error as "msDBFGetItemIndex(): DBASE file error.
> > > Item 'Time' not found.".
> > 
> > Looking at the code of msTiledSHPNextShape(), I believe that your
> > shapefiles
> > reference in the tile index should also have a "Time" field.
> > 
> > > On Mon, Jun 9, 2014 at 2:34 PM, Even Rouault <
> > 
> > even.rouault at mines-paris.org>
> > 
> > > wrote:
> > > > Le lundi 09 juin 2014 21:15:05, Hari Pradhan a écrit :
> > > > > Hello List,
> > > > > 
> > > > > I have been trying to implement MapServer WMS -T using tile index.
> > 
> > But
> > 
> > > > > I
> > > > 
> > > > am
> > > > 
> > > > > not able to make it work. I made some changes to the mapfile
> > > > > defined for "WMS-T for raster imagery" in the link
> > > > > "http://mapserver.org/ogc/wms_time.html" to make it work for vector
> > > > > data and followed the post in the link "
> > 
> > http://osgeo-org.1560.x6.nabble.com/WMS-WFS-and-yearly-time-dependent-dat
> > 
> > > > a-
> > > > 
> > > > > td4275270.html", but it didn't fix it out.
> > > > > 
> > > > > The thing that I did:
> > > > > 1. I had a set of vector shape file captured at different time
> > > > > frame. Say v1.shp, v2.shp,...
> > > > > 2. I used ogrtindex to generate a tileindex (say 'VectorLayer2.shp)
> > 
> > for
> > 
> > > > > above shape files. The dbf file of this tileindex has 'location'
> > > > 
> > > > attribute.
> > > > 
> > > > > 3. I ran my script to add 'Time' field to this tileindex such that
> > 
> > the
> > 
> > > > > final dbf file has two fields as location and Time.
> > > > > 
> > > > >    My dfb file looks like:
> > > > >         LOCATION                                        Time
> > > > >        
> > > > >        C:\data\tif\VectorLayer\SiteAddress_1.shp,0    20070301
> > > > >        C:\data\tif\VectorLayer\SiteAddress_2.shp,0    20070302
> > > > > 
> > > > > 4. Then finally I wrote the map file with layer section as:
> > > > > 
> > > > > LAYER
> > > > > 
> > > > >     NAME "states"
> > > > >     
> > > > >         DEBUG 5
> > > > >         CONNECTIONTYPE OGR
> > > > >         TILEINDEX "VectorLayer2.shp"
> > > > >         TILEITEM "Location"
> > > > >         TYPE POLYGON
> > > > >     
> > > > >     STATUS ON
> > > > >     
> > > > >     METADATA
> > > > >     
> > > > >       "wms_title"    "states"
> > > > >       
> > > > >           "wms_include_items"   "all"
> > > > >           "wms_dataurl_format" "text/HTML"
> > > > >       
> > > > >       "ows_include_items"     "all"
> > > > >       "wms_exceptions_format" "application/vnd.ogc.se_xml"
> > > > >       
> > > > >           'wms_srs'             'EPSG:42304'
> > > > >           "wms_timeextent" "20070301/20070302"
> > > > >           "wms_timeitem" "Time"
> > > > >           "wms_timedefault" "20070302"
> > > > >     
> > > > >     END
> > > > >     
> > > > >         FILTER "Time = '20070302'"
> > > > >         
> > > > >                 PROJECTION
> > > > >       
> > > > >       "init=epsg:42304"
> > > > >     
> > > > >     END
> > > > >     
> > > > >                 CLASS
> > > > >       
> > > > >       NAME       "The Upper Great Lakes States"
> > > > >       STYLE
> > > > >       
> > > > >         COLOR        232 232 232
> > > > >         OUTLINECOLOR 32 32 32
> > > > >       
> > > > >       END
> > > > >     
> > > > >     END
> > > > >   
> > > > >   END
> > > > > 
> > > > > By doing this, I got the following error.
> > > > > msOGRLayerInitItemInfo(): OGR error. Invalid Field name: Time".
> > > > > 
> > > > > Could anyone please help me to resolve this problem?
> > > > 
> > > > Hum, I'm wondering if FILTER "Time = '200070302'" doesn't apply to
> > > > the shapefile referenced by the tileindex, instead of the tileindex
> > > > itself. Perhaps
> > > > you could try to remove it ?
> > > > 
> > > > Also you could try to seperate a layer with the tileindex itself and
> > 
> > the
> > 
> > > > vector layer using it, as in the example in
> > > > http://www.mapserver.org/ogc/wms_time.html
> > > > 
> > > > > Thanks in advance.
> > > > > 
> > > > > Thanks
> > > > 
> > > > --
> > > > Geospatial professional services
> > > > http://even.rouault.free.fr/services.html
> > 
> > --
> > Geospatial professional services
> > http://even.rouault.free.fr/services.html

-- 
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http://even.rouault.free.fr/services.html