[Gdal-dev] How do These numbers mean

[hien thu]

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 !
 


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