Projections
Bradley Mclain
bradleym06 at HOTMAIL.COM
Sun Feb 4 13:42:46 PST 2007
I have several other shapefiles to render but they are in the same
projection as the current shapefile and line up fine with each other
correctly it is just the raster image I am having trouble with.
I'll give your suggestion of stripping it down a go and get back to you.
Brad
>From: "Simpson" <drewsimpson at bellsouth.net>
>To: "Bradley Mclain" <bradleym06 at HOTMAIL.COM>
>Subject: RE: [UMN_MAPSERVER-USERS] Projections
>Date: Fri, 2 Feb 2007 08:10:57 -0600
>
>20255 and 20355 should have made a difference, maybe worse?
>Do you have only three datasources to render, or once these are perfected,
>you have many more to do?
>If only these, a low budget/brute force approach would be to strip any
>geotif tags from the raster and use a world file
>(http://en.wikipedia.org/wiki/World_file), which is easily adjustable to
>align with your vector datasources. To strip tags, use a non-geo aware
>utility like tiffcp to create a new raster.
>
>-----Original Message-----
>From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On
>Behalf Of Bradley Mclain
>Sent: Thursday, February 01, 2007 4:19 PM
>To: MAPSERVER-USERS at LISTS.UMN.EDU
>Subject: Re: [UMN_MAPSERVER-USERS] Projections
>
>
>Drew
>
>Sorry for late reply, I tried both and unfortunately no luck.
>
>have you got any other ideas on how to fix this? I am attaching the current
>version my mapfile and html template so you can have a look.
>
>Also I have some other little questions:
>1. At the moment my map starts up and it is not until you click on the map
>or use the zoom functions etc that the map shows. Before that it is a blank
>image. Is there anyway to make the image show up on page load?
>
>2. As you can see from the attached file, my layer selections are currently
>split into two locations (Bibul and Hemley), is there anyway to make it so
>that both the Bilbul and Hemley data for the respective data show up using
>the one checkbox and display as one symbol in the legend. (eg instead of
>"Bilbul Property Boundary" and "Hemley Property Boundary", just have a
>single checkbox and legend label called "Property Boundaries". The data for
>each location is in seperate shapefiles and hence seperate layers within
>the
>mapfile.
>
>3. How do I add buttons to the edge of my map which allow simple panning,
>or
>is it possible to add smooth panning such as google maps as this would be
>preferable (I have read this needs ka-map and ajax style technology).
>
>Thanks for the help so far
>
>Brad
>
>
>
>
>
>
> >From: "Simpson" <drewsimpson at bellsouth.net>
> >To: "Bradley Mclain"
> ><bradleym06 at HOTMAIL.COM>,<MAPSERVER-USERS at LISTS.UMN.EDU>
> >Subject: RE: [UMN_MAPSERVER-USERS] Projections
> >Date: Thu, 1 Feb 2007 07:08:15 -0600
> >
> >Brad,
> >
> >A Clarification, did you try epsg 20255 and 20355 for the raster, leaving
> >vector at 28355?
> >
> >Drew.
> >
> >-----Original Message-----
> >From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On
> >Behalf Of Bradley Mclain
> >Sent: Wednesday, January 31, 2007 8:00 PM
> >To: MAPSERVER-USERS at LISTS.UMN.EDU
> >Subject: Re: [UMN_MAPSERVER-USERS] Projections
> >
> >
> >Hi Jérôme
> >
> >I tried what you said but still no luck, I tried several combinations,
>like
> >only for raster, only for polygons, and everything together including
> >defining in the mapfile. The map still shows but it is still off centre.
> >
> >I attached the mapfile and a pic of the problem to give you a better
>idea.
> >
> >I talked to someone before about this and they said the problem was
> >something to do with the fact the shapfile data takes into account the
> >spherical nature of the globe while the raster image does not.
> >
> >Brad
> >
> >
> >
> >
> > >From: Jérôme Martin <gooogle at FREE.FR>
> > >Reply-To: Jérôme Martin <gooogle at FREE.FR>
> > >To: MAPSERVER-USERS at LISTS.UMN.EDU
> > >Subject: Re: [UMN_MAPSERVER-USERS] Projections
> > >Date: Thu, 1 Feb 2007 02:23:35 +0100
> > >
> > >Hi Bradley,
> > >
> > >it is normal if your raster is not correctly aligned with the 2 goods
> > >shapefiles.
> > >
> > >In fact, yours shapefiles are on the projection "GDA_1994_MGA_Zone_55",
> >so
> > >its implique mapserv knows where to place correctly the shapefiles
>data.
> > >But for your raster, you don't have any information about the
>projection.
> > >So it can't know in what projection and zone the data has to be. (a
> > >bounding box exist in each zone, and are just translated from 6° (maybe
> >not
> > >in your reprojection, i don't know it, but UTM is the same system of
>2x60
> > >zones to define the earth)).
> > >
> > >So you can first try to put for each layer in your mapfile
> > >
> > >PROJECTION
> > > "init=epsg:xxxx" #where xxxx is the corresponding identifier of
> >the
> > >projection (check the share/proj/epsg file to do this) : in your case,
>it
> > >is "init=epsg:28355".
> > >END
> > >
> > >to force mapserv to know from where the data comes. It is probably
>useful
> > >only for the raster, but try to put again for shapefile in case of it
> >still
> > >doesn't work. (It always better to add this information in each layer)
> > >
> > >I hope i could help you,
> > >
> > >sincerely,
> > >
> > >Jérôme
> > >
> > >Bradley Mclain a écrit :
> > >>Hi
> > >>
> > >>I'm having some problems with projections in Mapserver. I have three
> > >>pieces of data, 2 polygon shapefiles and a GeoTIFF raster image. I am
> > >>trying to define their projections so that they align correctly as the
> > >>raster is slightly off from the two shapefiles.
> > >>
> > >>I have managed to extract the geographical info from the files but I
> >have
> > >>no idea where I define it in the mapfile and what info I need to
>include
> > >>(or what any of it means).
> > >>
> > >>I have attached the three text files which include the geographical
>data
> > >>for each, can someone explain to me how to define these in a mapfile,
>eg
> > >>where I need to do it and what info I need.
> > >>
> > >>Can you please include lots of detail and description so I can fully
> > >>understand :)
> > >>
> > >>Thanks
> > >>
> > >>Brad
> > >>
> > >>_________________________________________________________________
> > >>Advertisement: Fresh jobs daily. Stop waiting for the newspaper.
>Search
> > >>Now! www.seek.com.au
> >
> >>http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fninemsn%2Eseek%2Ecom%2Eau&
> >_t=757263760&_r=Hotmail_EndText_Dec06&_m=EXT
> > >>
> > >>Layer name: DBW_Home_Bilbul_Cadastral_Boundary
> > >>Geometry: Polygon
> > >>Feature Count: 15
> > >>Extent: (419320.137222, 6205167.425465) - (421949.715102,
> >6207719.690811)
> > >>Layer SRS WKT:
> > >>PROJCS["GDA_1994_MGA_Zone_55",
> > >> GEOGCS["GCS_GDA_1994",
> > >> DATUM["Geocentric_Datum_of_Australia_1994",
> > >> SPHEROID["GRS_1980",6378137.0,298.257222101]],
> > >> PRIMEM["Greenwich",0.0],
> > >> UNIT["Degree",0.0174532925199433]],
> > >> PROJECTION["Transverse_Mercator"],
> > >> PARAMETER["False_Easting",500000.0],
> > >> PARAMETER["False_Northing",10000000.0],
> > >> PARAMETER["Central_Meridian",147.0],
> > >> PARAMETER["Scale_Factor",0.9996],
> > >> PARAMETER["Latitude_Of_Origin",0.0],
> > >> UNIT["Meter",1.0]]
> > >>LUID: Real (11.0)
> > >>PLANTYPE: String (4.0)
> > >>TAG: String (50.0)
> > >>Area: Real (19.11)
> > >>Perimeter: Real (19.11)
> > >>Acres: Real (19.11)
> > >>Hectares: Real (19.11)
> > >>Bound_type: String (25.0)
> > >>Prop_ID: String (30.0)
> > >>OGRFeature(DBW_Home_Bilbul_Cadastral_Boundary):0
> > >> LUID (Real) = 103663790
> > >> PLANTYPE (String) = 13
> > >> TAG (String) = 116//751728
> > >> Area (Real) = 206766.29741414590
> > >> Perimeter (Real) = 1930.52158953932
> > >> Acres (Real) = 51.09308655258
> > >> Hectares (Real) = 20.67662974141
> > >> Bound_type (String) = Cadastre
> > >> Prop_ID (String) = DBW_Home_Bilbul
> > >> POLYGON ((419849.019570303731598
> > >>6205435.040179193019867,419680.452153401391115
> > >>6205707.173638857901096,420228.545299204241019
> > >>6206046.107636354863644,420397.849921675398946
> > >>6205772.639121992513537,419849.019570303731598
>6205435.040179193019867))
> > >>
> > >>Layer name: DBW_Hemley_2593_Cadastral_Boundary
> > >>Geometry: Polygon
> > >>Feature Count: 3
> > >>Extent: (422645.120770, 6208302.281805) - (423450.690420,
> >6208880.746240)
> > >>Layer SRS WKT:
> > >>PROJCS["GDA_1994_MGA_Zone_55",
> > >> GEOGCS["GCS_GDA_1994",
> > >> DATUM["Geocentric_Datum_of_Australia_1994",
> > >> SPHEROID["GRS_1980",6378137.0,298.257222101]],
> > >> PRIMEM["Greenwich",0.0],
> > >> UNIT["Degree",0.0174532925199433]],
> > >> PROJECTION["Transverse_Mercator"],
> > >> PARAMETER["False_Easting",500000.0],
> > >> PARAMETER["False_Northing",10000000.0],
> > >> PARAMETER["Central_Meridian",147.0],
> > >> PARAMETER["Scale_Factor",0.9996],
> > >> PARAMETER["Latitude_Of_Origin",0.0],
> > >> UNIT["Meter",1.0]]
> > >>LUID: Real (11.0)
> > >>PLANTYPE: String (4.0)
> > >>TAG: String (50.0)
> > >>Area: Real (19.11)
> > >>Perimeter: Real (19.11)
> > >>Acres: Real (19.11)
> > >>Hectares: Real (19.11)
> > >>Bound_type: String (40.0)
> > >>Prop_ID: String (30.0)
> > >>OGRFeature(DBW_Hemley_2593_Cadastral_Boundary):0
> > >> LUID (Real) = 103664166
> > >> PLANTYPE (String) = 13
> > >> TAG (String) = 288//751728
> > >> Area (Real) = 73981.56105988749
> > >> Perimeter (Real) = 1173.94681513112
> > >> Acres (Real) = 18.28124965142
> > >> Hectares (Real) = 7.39815610599
> > >> Bound_type (String) = Cadastre
> > >> Prop_ID (String) = Hemley_2593
> > >> POLYGON ((423067.736698167922441
> > >>6208782.058439230546355,423228.702213083277456
> > >>6208880.746239688247442,423450.690419794409536
> > >>6208521.27053206320852,423266.332749532884918
> > >>6208468.748745977878571,423260.736078957444988
> > >>6208477.574468746781349,423067.736698167922441
>6208782.058439230546355))
> > >>
> > >>Driver: GTiff/GeoTIFF
> > >>Size is 9530, 6552
> > >>Coordinate System is `'
> > >>Origin = (418485.188000000023749,6208828.519999999552965)
> > >>Pixel Size = (0.609681177000000,-0.609608973000000)
> > >>Metadata:
> > >> AREA_OR_POINT=Area
> > >> TIFFTAG_SOFTWARE=IMAGINE TIFF Support
> > >>Copyright 1991 - 1999 by ERDAS, Inc. All Rights Reserved
> > >>@(#)$RCSfile: etif.c $ $Revision: 1.9.1.2 $ $Date: 2001/12/05
>00:33:12Z
> >$
> > >> TIFFTAG_XRESOLUTION=1
> > >> TIFFTAG_YRESOLUTION=1
> > >> TIFFTAG_RESOLUTIONUNIT=1 (unitless)
> > >>Corner Coordinates:
> > >>Upper Left ( 418485.188, 6208828.520)
> > >>Lower Left ( 418485.188, 6204834.362)
> > >>Upper Right ( 424295.450, 6208828.520)
> > >>Lower Right ( 424295.450, 6204834.362)
> > >>Center ( 421390.319, 6206831.441)
> > >>Band 1 Block=9530x1 Type=Byte, ColorInterp=Red
> > >>Band 2 Block=9530x1 Type=Byte, ColorInterp=Green
> > >>Band 3 Block=9530x1 Type=Byte, ColorInterp=Blue
> > >>
> >
> >_________________________________________________________________
> >Advertisement: Fresh jobs daily. Stop waiting for the newspaper. Search
> >now!
> >www.seek.com.au
> >http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fninemsn%2Eseek%2Ecom%2Eau&_
>t
> >=757263760&_r=Hotmail_EndText_Dec06&_m=EXT
> >
>
>_________________________________________________________________
>Advertisement: Fresh jobs daily. Stop waiting for the newspaper. Search
>Now!
>www.seek.com.au
>http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fninemsn%2Eseek%2Ecom%2Eau&_t
>=757263760&_r=Hotmail_EndText_Dec06&_m=EXT
>
_________________________________________________________________
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