MapServer 4.x Tutorialのメモ

Example 1.1: Map with a Single Layer と同じデータが見つけられなかったので、別のデータを用います。 そのため、表示する地図の画像が若干異なります。

• データのダウンロード

nationalatlas.gov のRaw Data Downloadページで、 Boundaries を選択して、下から3番目の項目 State Boundaries の Shapefile: statesp020.tar.gz をダウンロードします。

これを/var/www/html/gis/mapserver_tutorial/の下に展開します。

ディレクトリ/var/www/html/gis/mapserver_tutorial/statesp020/ に以下のファイルが存在するはずです。

• statesp020.dbf
• statesp020.shp
• statesp020.shx
• statesp020.txt

チュ―トリアルに書かれているようにogrinfoを使用してみると、以下のようになります。

# ogrinfo -al -so statesp020.shp
INFO: Open of `statesp020.shp'
using driver `ESRI Shapefile' successful.

Layer name: statesp020
Geometry: Polygon
Feature Count: 2895
Extent: (-179.133392, 17.674692) - (179.788208, 71.398048)
Layer SRS WKT:
(unknown)
AREA: Real (12.3)
PERIMETER: Real (12.3)
STATESP020: Real (11.0)
STATE: String (20.0)
STATE_FIPS: String (2.0)
ORDER_ADM: Integer (6.0)
MONTH_ADM: String (18.0)
DAY_ADM: Real (16.0)
YEAR_ADM: Real (16.0)

注.  ogrinfoは、gdalに含まれているので、gdalをインストールしていれば /usr/local/bin/にあります。

• example1-1 map file

example1-1のmapファイルをチュートリアルから上記のデータ用に変更します。 (変更箇所は赤色の部分)

# The annotated map file (sort of)
# Created by Pericles S. Nacionales for the MapServer tutorial
# 20050408
#
# MapServer map file uses the pound sign (#) to denote the start of a line
# comment--each line that needs to be commented has to be prepended with a "#".
#
# Map files begin with MAP keyword to signify the start of the map object.
# Well, the entire map file is THE map object.  Enclosed between MAP and END
# at the very bottom of this map file, are keyword/value pairs and other
# objects.
MAP
  IMAGETYPE      PNG
  EXTENT         -97.238976 41.619778 -82.122902 49.385620
  SIZE           400 300
  SHAPEPATH      "/var/www/html/gis/mapserver_tutorial/"  # "/ms4w/apps/tutorial/data"
  IMAGECOLOR     255 255 255

  # Layer objects are defined beneath the map object.  You need at least one
  # layer defined in your map file before you can display a map...  You can
  # define as many layers as you'd like although a limit is typically hard-coded
  # in map.h in the MapServer source.  The default limit is set at 100.  You'd
  # have to have a very specialized application to need more than 100 layers in
  # your application.

  # Start of LAYER DEFINITIONS ---------------------------------------------
  LAYER # States polygon layer begins here
    NAME         statesp020    #states
    DATA         statesp020    #states_ugl
    STATUS       OFF
    TYPE         POLYGON

    # The class object is defined within the layer object.  You can define as
    # many classes as you need (well, there are limits as with layers, but it's
    # senseless to define more than ten on a "normal" layer.  There are
    # situations, however, where you might have to do it.)
    CLASS
      NAME       "The Upper Great Lakes States"

      # There are styles in a class, just like there are classes in a layer,
      # just like there are layers in a map.  You can define multiple styles in
      # a class just as you can define multiple classes in a layer and multiple
      # layers in a map.
      STYLE
        COLOR        232 232 232
        OUTLINECOLOR 32 32 32
      END
    END
  END # States polygon layer ends here
  # End of LAYER DEFINITIONS -------------------------------

END # All map files must come to an end just as all other things must come to...

このファイルを/var/html/gis/mapserver_tutorial/example1-1.mapとして保存します

• example1-1 の表示

以下のようにアクセスします。

http://192.168.0.1/cgi-bin/mapserv?map=/var/www/html/gis/mapserver_tutorial/example1-1.map&layer=statesp020&mode=map

注.　 上記でmap=/var/www/html/gis/mapserver_tutorial/の部分を相対パス、すなわちmap=/gis/mapserver_tutorial/としたらエラーになります。

問題がなければ、以下のような画像が表示されます。