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Sample Image from the online demo

Online Demo:

• Sub-Menu Commands
• Show and Hide Status Window
• Dynamically Add a Layer
• Dynamically Delete a Layer
• and More ...

JShape parameters and menu commands used in the online demo:

JShape Applet Parameters:

<applet code="jshape.class" width=560 height=460 archive="jshape.zip">
<param name="project" value="The Populations of Japan Cities">
<param name="unzoomratio" value="2">
<param name="cmdfile" value="menu/japan.cmd">
<param name="external" value="japan">
<param name="mbcolor" value="black">
<param name="status" value="5">
<param name="list" value="1,3">

<param name="layer1" value="menu/city.shp">
<param name="info1" value="menu/city.dbf">
<param name="title1" value="Cities">
<param name="fcolor1" value="green">
<param name="lcolor1" value="green">
<param name="size1" value="4">
<param name="thematic1" value="menu/city.tmt">
<param name="tmenable1" value="off">

<param name="layer2" value="menu/latlong.shp">
<param name="info2" value="menu/latlong.txt">
<param name="title2" value="Latlong">
<param name="fcolor2" value="cyan">
<param name="lcolor2" value="cyan">

<param name="layer3" value="menu/japan.shp">
<param name="title3" value="Japan">
<param name="fcolor3" value="red">
<param name="bcolor3" value="transparent">
<param name="size3" value="2">
</applet>

Command File : japan.cmd

@@Status Window
  @Show Status Window
   status=5
  @Hide Status Window
   status=0
@@

@Separator

@@Functions
  @Add Latlong Layer (method 1)
   ActLayer=1
   AppendLayer="layer=menu/latlong.shp,info=menu/latlong.txt,title=Latlong,fcolor=cyan,lcolor=cyan"
  @Add Latlong Layer (method 2)
   ActLayer=1
   AppendLayer=2
  @Delete Latlong Layer
   DeleteLayer=Latlong
  @@Zoom/Query/Report
    @Tokyo Neighborhood
     MapDisplay=off
     Status=off
     Clear
     Zoom=138.938, 34.694, 141.007, 36.563
     ActLayer=1
     Enable=on
     TMEnable=on
     LField=1
     Label=on
     Status=on
     ShowStatus=JShape Map is zoomed to the Tokyo neighborhood area\n
     MapDisplay=on
    @Select Larger Cities
     MapDisplay=off
     Clear
     UnZoom
     ActLayer=1
     Enable=on
     TMEnable=off
     LField=2
     SSize=16
     Query=> 10000000
     LField=1
     MapDisplay=on
    @Population Report
     ActLayer=1
     Enable=on
     LField=2
     ExportHeader="City : |,\tPopulation : |,    \tCapital : "
     ShowStatus=[City Population Report] :\n
     ExportAll
     ShowStatus="Total "
     ShowExportCount
     ShowStatus= cities selected\n
     ShowStatus="Total population : "
     ShowExportSum
     ShowStatus=\n
     ShowStatus="Average population : "
     ShowExportAvg
     ShowStatus=\n
     ExportHeader=
     LField=1
  @@
@@

@Copy Selected Labels
 Status=clear
 ExportNoTotal
 MenuCommand=Copy

Detail Discussion

• At line 8 in JShape Applet Parameters : The "list" parameter specifies JShape only to load layer 1 and layer 3. No "count" parameter is required.
• At line 11 in JShape Applet Parameters : JShape reads a dBase (.dbf) file as its attribute information file.
• From line 1 to line 6 in japan.cmd : This block defines a sub-menu entry. The syntax of a sub-menu is :

  
  @@Status Window         -> "@@ with text" means to begin a sub-menu.
    @Show Status Window   -> menu item
     status=5             -> script command
    @Hide Status Window   -> menu item
     status=0             -> script command
  @@                      -> "@@" means to end a sub-menu.
  

• At line 8 in japan.cmd : "@Separator" means add a separator line into the menu.
• From line 10 to line 64 in japan.cmd : This block defines a 2 level sub-menus.

  
  @@Functions
    ......
    @@Zoom/Query/Report
      ......
    @@
  @@
  

• At line 13 in japan.cmd : This line uses AppendLayer (or InsertLayer) command to dynamically define and create a new layer. The layer definition is similar to that in JShape Applet Parameters, and the only differences are:
  • each parameter is delimitered with ','.
  • no layer number (for examples : layer1, info2, fcolor3...) is required.
• At line 16 in japan.cmd : If there is layer definition (for example : line 19 - 23) in JShape Applet Parameters, The AppendLayer (or InsertLayer) command can just use the specified layer number to create a new layer.
• At line 18 in japan.cmd : The DeleteLayer command deletes a layer with the specified layer title.
• From line 66 to line 69 in japan.cmd : Depends on users' Java environment security settings, the line 69 (MenuCommand=Copy) command may not run on users' WWW Java applet environments.