place a point in the map

Tue Jul 12 06:39:05 PDT 2005

The EXTENT line in the MAP object sets the initial extent of your map when you start your application.  How do you want your map to look when you start up?  Do you want it to show the full extent of your background raster?  If so, use that extent.  

Just make sure that UNITS matches the units used by your projection, and that either both layers are in the same projection, OR add projection information so that you can display both layers at the same time.  

I don't have a virtual data layer handy, so I can't quickly test it, but does anyone know if running ogrinfo on a text data source will return the extent?  

David.

David Fawcett
Minnesota Office of Environmental Assistance
david.fawcett at moea.state.mn.us
651.215.0200

-----Original Message-----
From: N M [mailto:mapserver at hotmail.com]
Sent: Tuesday, July 12, 2005 6:13 AM
To: David.Fawcett at state.mn.us; MAPSERVER-USERS at lists.umn.edu
Subject: Re: [UMN_MAPSERVER-USERS] place a point in the map

Hi David,

I follow all steps in the information on the URL you send me, I think that 
DSN runs perfectly, I created the TXT database, the OVF file and I modifed 
my .map file with the parameters of the example. My question now is, how can 
I calculate the EXTENT coordinates. When I had a shapefile I used it to do 
it. Which could be my .map file so I could display it?

Have I to change anything in my .map file so it runs? My EXTEND is the one 
of my old shapefile. Thank you

MAP
  IMAGETYPE      PNG
  EXTENT   0.000000 -205.000000 300.000000 0.000000
  SIZE           585 400
  SHAPEPATH      "data"
  IMAGECOLOR     255 180 0

  #PROJECTION
   # "proj=laea"
   # "ellps=clrk66"
   # "lat_0=45"
   # "lon_0=-100"
    #
    # Alternatively, you can specify an EPSG code.
    # "init=epsg:2163"
    #
  #END

  # Start of LAYER DEFINITIONS ---------------------------------------------

    LAYER # Capa de raster
    NAME mapafig
    DATA "raster/figueres.tif"
    STATUS DEFAULT
    TYPE RASTER
    PROCESSING "BANDS=1"

    #OFFSITE 71 74 65 #Color que ha de ser transparent

    #PROJECTION
    #  "init=epsg:4326"
    #END
  END # Fi capa de raster

LAYER
  CONNECTION "mapa21.ovf"
  CONNECTIONTYPE OGR
  DATA "prova"
    METADATA
      "wms_srs"   "4326"
      "wms_title"   "prova"
    END
  NAME "prova"
  SIZEUNITS PIXELS
  STATUS ON
  TOLERANCE 0
  TOLERANCEUNITS PIXELS
  TYPE POINT
  UNITS METERS
  CLASS
    STYLE
      COLOR 0 0 0
      MAXSIZE 100
      MINSIZE 1
      SIZE 6
      SYMBOL "symbols/prova.gif"
    END
  END
  END

  # End of LAYER DEFINITIONS -------------------------------
END # end of map file

>If you don't want to place your data in ESRI shapefiles or a database, you 
>can use a simple text file as the data source for a layer.
>
>If your Mapserver binary has been compiled with OGR support (quite likely), 
>you can use a virtual data source.  Take a look at the Vector Data Access 
>Reference 
>http://ms.gis.umn.edu:8081/ms_plone/docs/reference/vector_data/VirtualSpatialData
>
>If you search the list archives for OGR and VRT, you will most likely find 
>some example map file layers.
>
>David.
>
>David Fawcett
>Minnesota Office of Environmental Assistance
>david.fawcett at moea.state.mn.us
>651.215.0200
>
>
>-----Original Message-----
>From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On
>Behalf Of SUBSCRIBE MAPSERVER-USERS Nuri
>Sent: Monday, July 11, 2005 4:52 AM
>To: MAPSERVER-USERS at LISTS.UMN.EDU
>Subject: [UMN_MAPSERVER-USERS] place a point in the map
>
>
>Recently I managed to create my own map and placed a symbol in it from a
>database.
>
>Now I need to place several points in the map. My database contains gps
>coordinates like this:
>
>4216 9669 259
>
>Latitude: 42º 16'N
>Longitude: 258ºE
>
>I translated this gps coordinates to UTM coordinates to obtain:
>
>Zone: 14
>Easting: 252608
>Norting: 4683531
>
>I need to show this point in the map.
>
>Someone could explain my how to do it? Thank you.
>
>My present .map file is:
>
>MAP
>   IMAGETYPE      PNG
>   EXTENT   0.000000 -205.000000 300.000000 0.000000
>   SIZE           600 410
>   SHAPEPATH      "data"
>   IMAGECOLOR     255 180 0
>   FONTSET "fonts/fonts.list"
>
>   #PROJECTION
>    # "proj=laea"
>    # "ellps=clrk66"
>    # "lat_0=45"
>    # "lon_0=-100"
>     #
>     # Alternatively, you can specify an EPSG code.
>     # "init=epsg:2163"
>     #
>   #END
>
>   # Start of LAYER DEFINITIONS 
>--------------------------------------------
>-
>
>     LAYER # Capa de raster
>     NAME mapafig
>     DATA "raster/figueres.tif"
>     STATUS DEFAULT
>     TYPE RASTER
>     PROCESSING "BANDS=1"
>     #OFFSITE 71 74 65 #Color que ha de ser transparent
>
>     #PROJECTION
>     #  "init=epsg:4326"
>     #END
>   END # Fi capa de raster
>
>
>
>   LAYER
>     NAME simbols
>     GROUP grup
>     STATUS DEFAULT
>     DATA mapa
>     TYPE ANNOTATION
>     LABELITEM "SIMB"
>     CLASSITEM "C"
>     CLASS
>       EXPRESSION "2"
>       STYLE
>         COLOR 0 0 0 # dummy color
>         SYMBOL 'symbols/prova.gif'
>       END
>       LABEL
>         MINFEATURESIZE 20
>         MINDISTANCE 50
>         POSITION CC
>         SIZE TINY
>         COLOR 255 255 255
>       END
>     END
>
>     PROJECTION
>       "init=epsg:4326"
>     END
>   END
>
>
>
>   # End of LAYER DEFINITIONS -------------------------------
>END # end of map file

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