[Mapserver-users] Relative Paths vs. Absolute Paths

McNeil, Todd W. TMCNEIL TMCNEIL at arinc.com
Wed Oct 15 15:53:21 PDT 2003


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Hi all,

I sent out an email about this last week, but never got a reply.  I am going
through Section 3 of the MapServer 3.5 Tutorial and am having the toughest
time figuring out why my html page does not show the legend, reference and
the map images.  This is my first time using MS, so I am at the point of
giving up on this because of this seemingly simple path problem that I have
no solution for.  I've used the IE > View > Source menu option to determine
where the images maybe stored in the online tutorial on the MapServer web
page.  I see this written in the html:

Map Image: <input type="image" name="img"
src="/tmp/S3EX1106625668213828.gif" border="0">

Legend Image: <img src="/tmp/S3EX1leg106625668213828.gif">

Reference Map Image:  <img src="/tmp/S3EX1ref106625668213828.gif">

I just cut and pasted the important stuff from the html source code.  The
mapfile listing shows this:

IMAGEPATH "/data/tmp/"
IMAGEURL "/tmp/" 

So, I figured that if these paths work in online tutorial, they must work in
the downloadable tutorial.  I copy and pasted them and because I have
windows, I changed the slashes in the other direction to look like this:

IMAGEPATH "\data\tmp\"
IMAGEURL "\tmp\" 
I still get an html page without the images.  So, enough background
information to fill your brain.  My question is, if MapServer is used to
create the map images, where does it store them or does IIS store them
somewhere?  I've even done a Find Files in Windows Explorer to see if I
could find the GIF images created by my tutorial and I find no trace of
them.  This is why I think this is an absolute vs. a relative path issue and
I am just not finding the right directory to where the images are stored.
Are these temporary images and where are they?  Is windows playing tricks on
me or is my syntax wrong in my html or mapfile?  Any help would be greatly
appreciated and of course I will sum.  I've also attached my map file and
template file to help you out.
 <<s3ex2.html>> 
 <<s3ex2.map>> 
Thanks in advance,

*********************************
Todd McNeil
GIS Specialist
Surface Transportation and Energy Systems
ARINC
Annapolis, MD
Tel: 410.266.2302 Email: tmcneil at arinc.com
Fax: 410.573.3170 Web: http://www.arinc.com <http://www.arinc.com> 


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Content-Type: text/html;
	name="s3ex2.html"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
	filename="s3ex2.html"

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
  <head>
    <title>MapServer 3.5 Tutorial</title>
	<link type=3D"text/css" rel=3D"stylesheet" =
href=3D"E:/projects/tutorial35/ms35.css" />
  </head>

  <body>
<h3>Section 3<br>
  Example 2 – Zoom Controls</h3>
<p>

    <form method=3D"GET" action=3D"/Scripts/mapserv.exe">

    <input type=3D"hidden" name=3D"map" value=3D"[map]">
    <input type=3D"hidden" name=3D"imgext" value=3D"[mapext]">

    [<a href=3D"E:/projects/tutorial35/s3/s3ex2_map.html">map file =
listing</a>]
    [<a href=3D"E:/projects/tutorial35/s3/s3ex2_code.html">template =
file listing</a>]
    <table border=3D1 cellpadding=3D3>
    <tr>
    <td align=3Dcenter>
      <input type=3D"image" name=3D"img" src=3D"[img]" border=3D"0">
    </td>
    <td valign=3Dtop>
      <font size=3D+1 face=3Darial,helvetica>Map Controls</font>
      <p>
      Set your zoom option:<br>
      <select name=3D"zoom" size=3D"1">
      <option value=3D"10" [zoom_10_select]> Zoom in 10 times
      <option value=3D"8" [zoom_8_select]> Zoom in 8 times
      <option value=3D"4" [zoom_4_select]> Zoom in 4 times
      <option value=3D"3" [zoom_3_select]> Zoom in 3 times
      <option value=3D"2" [zoom_2_select]> Zoom in 2 times
      <option value=3D"1"  [zoom_1_select]> Recenter Map
      <option value=3D"-2" [zoom_-2_select]> Zoom out 2 times
      <option value=3D"-3" [zoom_-3_select]> Zoom out 3 times
      <option value=3D"-4" [zoom_-4_select]> Zoom out 4 times
      <option value=3D"-8" [zoom_-8_select]> Zoom out 8 times
      <option value=3D"-10" [zoom_-10_select]> Zoom out 10 times
      </select>
      <p>
      <font face=3Darial,helvetica><b>Legend</b></font><br>
      <img src=3D"[legend]"><p>
      <img src=3D"[ref]">
    </td>
    </tr></table>
   =20
  <p> <a href=3D"index.html">Back to Section 3</a> | <a =
href=3D"/Scripts/mapserv.exe?map=3DE:/Projects/tutorial35/s3/s3ex2.map&l=
ayer=3Dwater&layer=3Dstates&zoom=3D1&submit=3DRedraw">Proceed=20
    to Example 3</a>=20
</form>

  </body>
</html>



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Content-Type: application/octet-stream;
	name="s3ex2.map"
Content-Disposition: attachment;
	filename="s3ex2.map"

NAME S3EX2
EXTENT -97.5 41.619778 -82.122902 49.38562
SIZE 400 300
SHAPEPATH "E:\Projects\tutorial35\data"
FONTSET "E:\Projects\tutorial35\data\fonts.list"
SYMBOLSET "E:\Projects\tutorial35\symbols\symbols35.sym"

WEB
  TEMPLATE s3ex2.html
  IMAGEPATH "\data\tmp"
  IMAGEURL "\tmp\"
END

LEGEND
  STATUS ON
  LABEL
    TYPE TRUETYPE
    FONT arial
    COLOR 0 0 0
    SIZE 12
    ANTIALIAS TRUE
  END
END

REFERENCE
  STATUS ON
  IMAGE "../images/ref1.gif"
  SIZE 150 113
  EXTENT -97.5 41.619778 -82.122902 49.38562
  COLOR -1 -1 -1
  OUTLINECOLOR 255 0 0
END


# LAYER DEFINITIONS ---------------------------------------------
LAYER # Shaded Relief Raster
  NAME "relief"
  DATA "raster\shdrlfi020g_ugl.tif"
  STATUS DEFAULT
  TYPE RASTER
#  OFFSITE 0
END

LAYER # States
  NAME "states"
  DATA states_ugl
  STATUS OFF
  TYPE POLYGON

# CLASSITEM "CLASS"
  CLASS # States class
    NAME "States"
    EXPRESSION ('[CLASS]' eq 'land')
#   EXPRESSION 'land'
    COLOR 240 240 240
    OUTLINECOLOR 0 0 0
  END # end of States class object
END # end of layer object

LAYER # water features layer
  NAME "water features"
  DATA hydrop_ugl
  STATUS DEFAULT
  TYPE POLYGON

  CLASSITEM "FEATURE"
  CLASS
    NAME "Bay/Estuarine"
    EXPRESSION /Bay*/
    COLOR 164 164 255
  END
  CLASS
    NAME "Lakes/Reservoir"
    EXPRESSION ('[FEATURE]' eq 'Lake' or '[FEATURE]' = 'Reservoir')
    COLOR 64 64 255
  END
  CLASS
    NAME "Marsh/Swamp"
    EXPRESSION /Sw*/
    COLOR 210 235 255
  END
  CLASS
    NAME "Major Rivers"
    EXPRESSION 'Stream'
    COLOR 128 128 220
  END
  CLASS
    NAME "Canal"
    EXPRESSION 'Canal'
    COLOR 200 128 255
  END
END  # end of water features layer

#LAYER # Roads
#  NAME "roads"
#  DATA roads_ugl
#  TYPE LINE
#  STATUS DEFAULT
#
#  CLASSITEM "CLASS"
#  CLASS
#    NAME "Interstate Highways"
#    EXPRESSION 'Interstate'
#    COLOR 128 0 0
#    SYMBOL 'circle'
#    SIZE 2
#  END
#  CLASS
#    NAME "US Highways"
#    EXPRESSION 'US'
#    COLOR 255 128 0
#    SYMBOL 'line1'
#    SIZE 1
#  END
#END

LAYER # States
  NAME "states"
  DATA states_ugl
  STATUS DEFAULT
  TYPE LINE

# CLASSITEM "CLASS"
  CLASS # States class
    NAME "States"
    EXPRESSION ('[CLASS]' eq 'land')
#   EXPRESSION 'land'
    COLOR 0 0 0
  END # end of States class object
END # end of layer object

LAYER # States
  NAME "states"
  DATA states_ugl
  STATUS DEFAULT
  TYPE ANNOTATION

  LABELITEM "STATE"
  CLASSITEM "CLASS"
  CLASS # States class
    EXPRESSION 'land'
    COLOR -1 -1 -1
    LABEL
      COLOR 132 31 31
      SHADOWCOLOR 218 218 218
      SHADOWSIZE 2 2
      TYPE TRUETYPE
      FONT arial-bold
      SIZE 14
      ANTIALIAS TRUE
      POSITION CL
      PARTIALS FALSE
      MINDISTANCE 250
      BUFFER 4
    END # end of label
  END # end of States class object
END # end of layer object

END # end of map file


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