place a point in the map
Fawcett, David
David.Fawcett at STATE.MN.US
Tue Jul 12 16:14:02 EDT 2005
To answer my own question, OGRINFO will return an extent from a VRT ODBC connection.
I used this command in the FWTools shell:
C:\Program Files\FWTools0.9.6>ogrinfo c:\maps\vrttest\facilities.ovf facilities -so
(the -so option provides 'summary only', adding a -ro would open the data in 'read only' mode and prevent the 'Error 4: Update access not supported...' message)
Here is the data that I got back:
ERROR 4: Update access not supported for VRT datasources.
Had to open data source read-only.
INFO: Open of `c:\cfusionmx\wwwroot\maps\vrttest\facilities.ovf'
using driver `VRT' successful.
Layer name: facilities
Geometry: Point
Feature Count: 91
Extent: (0.000000, 0.000000) - (659989.000000, 5410447.000000)
Layer SRS WKT:
PROJCS["WGS 84 / UTM zone 15N",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.01745329251994328,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",-93],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AUTHORITY["EPSG","32615"]]
DestFacID: String (8.0)
DestFac: String (50.0)
DestFacType: String (20.0)
OGRINFO documentation can be found at http://www.remotesensing.org/gdal/ogr/ogrinfo.html
FWTools Suite can be found at: http://fwtools.maptools.org/
Hope this helps.
David.
David Fawcett
Minnesota Office of Environmental Assistance
david.fawcett at moea.state.mn.us
651.215.0200
-----Original Message-----
From: Fawcett, David
Sent: Tuesday, July 12, 2005 8:39 AM
To: 'N M'; MAPSERVER-USERS at lists.umn.edu
Subject: RE: [UMN_MAPSERVER-USERS] place a point in the map
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
_________________________________________________________________
Descarga gratis la Barra de Herramientas de MSN
http://www.msn.es/usuario/busqueda/barra?XAPID=2031&DI=1055&SU=http%3A//www.hotmail.com&HL=LINKTAG1OPENINGTEXT_MSNBH
More information about the mapserver-users
mailing list