[Gdal-dev] How do These numbers mean

Vincent Schut schut at sarvision.com
Wed Mar 24 03:14:04 EST 2004


Hien,

I think you will have a better chance of getting these questions answered by 
posting them to the mapserver-users mail list. The error you are getting is 
probably purely mapserver related, and has next to nothing to do with GDAL...

For your convenience I will send this to the mapserver list too, so you don't 
have to post it again.

Cheers,
Vincent.

On Wednesday 24 March 2004 03:00, hien thu wrote:
> Hello !
>
> I have some questions..
> 1.  I want to display a raster layer ( an image format .tif).
>   But I alway get error :"Internal SerVer Error :The server encountered an
> internal error or misconfiguration and was unable to complete your request.
> Please contact the server administrator, root at localhost and inform them of
> the time the error occurred, and anything you might have done that may have
> caused the error. More information about this error may be available in the
> server error log."
>
>   My map : tif.map:
>
> MAP
> IMAGETYPE      PNG24
> EXTENT         201621.496941 -294488.285333 1425518.020722 498254.511514
> SIZE             400 300
> SHAPEPATH      "data"
> SYMBOLSET      "symbols/symbols35.sym"
> FONTSET        "fonts/fonts.list"
> WEB
>   IMAGEPATH '/var/www/html/tmp/'
>   IMAGEURL  '/tmp/'
> END
> PROJECTION
> #  "init=epsg:4326"
> #  "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 # MODIS raster layer begins here
>   NAME         modis
>   DATA         "raster/example.tif"
>   STATUS       default
>   TYPE         RASTER
>   PROCESSING   "BANDS=1,2,3"
>   OFFSITE      71 74 65
>   PROJECTION
>     "init=epsg:4269"
>   END
> END # MODIS raster layer ends here
>
> # End of LAYER DEFINITIONS -------------------------------
> END # end of map file
>
> 2. I have a map file :
>
> I display this file but  no image can create ( white image and no error)
>
> MAP
>   IMAGETYPE      PNG
>   EXTENT              ???  Help me ??
>
> #  I used   Extent:  4.931450  -10.330521     14.607994    -2.691144
>     but  still get same result
>
>   SIZE           400 300
>   SHAPEPATH      "data"
>   IMAGECOLOR      255 255 255
>   SYMBOLSET "symbols/symbols35.sym"
>   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
> #---------------------------------------------
> LAYER
>   NAME a1
>   TYPE POINT
>   DATA a1
>   STATUS default
>   PROJECTION
>     "init=epsg:4326"
>   END
>   CLASS
>     COLOR 255 0 0
>     SYMBOL 'star'
>     SIZE 10
>   END
> END
> #-------------------------------------------------
> LAYER # Display name
>   NAME         a1
>   DATA         a1
>   STATUS       default
>   TYPE         ANNOTATION
>   PROJECTION
>     "init=epsg:4326"
>   END
>   LABELITEM    "TEN"
>   CLASS
>     COLOR      -1 -1 -1
>     LABEL
>       COLOR 132 31 31
>       SHADOWCOLOR 218 218 218
>       SHADOWSIZE 2 2
>       TYPE TRUETYPE
>       FONT arial-bold
>       SIZE 12
>       ANTIALIAS TRUE
>       POSITION UC
>       PARTIALS FALSE
>       MINDISTANCE 300
>       BUFFER 4
>     END # end of label
>   END # end of class
>  END # States label layer ends here
> #-------------------------------------------------
> END # end of mapfile
>
> I use ArcView 3.0 to creare shapefiles : a1.dbf ; a1.shx ; a1.shp
>
> a1.dbf :
>
> INFO: Open of `a1.dbf'
> using driver `ESRI Shapefile' successful.
> Layer name: a1
> Geometry: Point
> Feature Count: 3
> Extent: (4.931450, -10.330521) - (14.607994, -2.691144)
> Layer SRS WKT:
> (unknown)
> ID: Integer (8.0)
> TEN: String (16.0)
> OGRFeature(a1):0
>   ID (Integer) = 0
>   TEN (String) = buon
>   POINT (13.84405618 -2.69114417)
> OGRFeature(a1):1
>   ID (Integer) = 0
>   TEN (String) = vui
>   POINT (14.60799388 -9.43926052)
> OGRFeature(a1):2
>   ID (Integer) = 0
> TEN (String) = daukho
>   POINT (4.93144968 -10.33052117)
>
> a1.shx:
>
> INFO: Open of `a1.shx'
> using driver `ESRI Shapefile' successful.
> Layer name: a1
> Geometry: Point
> Feature Count: 3
> Extent: (4.931450, -10.330521) - (14.607994, -2.691144)
> Layer SRS WKT:
> (unknown)
> ID: Integer (8.0)
> TEN: String (16.0)
> OGRFeature(a1):0
>   ID (Integer) = 0
>   TEN (String) = buon
>   POINT (13.84405618 -2.69114417)
> OGRFeature(a1):1
>   ID (Integer) = 0
>   TEN (String) = vui
>   POINT (14.60799388 -9.43926052)
> OGRFeature(a1):2
>   ID (Integer) = 0
>   TEN (String) = daukho
>   POINT (4.93144968 -10.33052117)
>
> a1.shp :
>
> INFO: Open of `a1.shp'
> using driver `ESRI Shapefile' successful.
> Layer name: a1
> Geometry: Point
> Feature Count: 3
> Extent: (4.931450, -10.330521) - (14.607994, -2.691144)
> Layer SRS WKT:
> (unknown)
> ID: Integer (8.0)
> TEN: String (16.0)
> OGRFeature(a1):0
>   ID (Integer) = 0
>   TEN (String) = buon
>   POINT (13.84405618 -2.69114417)
> OGRFeature(a1):1
>   ID (Integer) = 0
>   TEN (String) = vui
>   POINT (14.60799388 -9.43926052)
> OGRFeature(a1):2
>   ID (Integer) = 0
>  TEN (String) = daukho
>   POINT (4.93144968 -10.33052117)
>
>
>
> 3. I have two images as the same properties  ( img1.tif ; img2.tif )
>
>   File Type    Tagged Information File Format (Tiff)
>   Width        3480
>   Height       1740
>   HorizontalR    1
>   VerticalRes    1
>   Bit Depth      24
>   Color Repre    True color RGB
>   Comprestion    uncompressed
>
>  But when I open them by ArcView 3.0 , I see some differences between them
> :
>
> ( Defination)
>     img1.tif:
>             Left : -97.374337     Right   -80.903299
>             Bottom  41.180399     Top      49.415915
>     img2.tif:
>             -0.005208     36.223958
>              -18.119792    0.005208
>    How do These numbers mean ? Can I change img2.tif same as img1.tif ?
>
>
> I am very worry because althougt I try again but  still ....
>
> Hepl me !
>
> Thanks a lot !
>
>
>
> Do you Yahoo!?
> Yahoo! Finance Tax Center - File online. File on time.

-- 
-----------------------------
 Vincent Schut
 SarVision B.V.
 Wageningen, The Netherlands
 www.sarvision.com



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