wiki:MigrationGuide5.x

Important notes when upgrading to MS4W 5 from MS4W 4

REQUIREMENTS.txt

  • always first follow the instructions in the file /ms4w/REQUIREMENTS.txt to install the updated "Microsoft Visual C++ Redistributable" on your server

ms4w.conf

SWIG MapScript

PHP

  • test PHP MapScript at the commandline by executing:
    setenv.bat
    php -dextension=C:/ms4w/Apache/php/ext/php_mapscript.dll -r "echo msGetVersion();"
    
  • as of MS4W 5.0, there is no external file to include in your PHP scripts (the constants and functions are wrapped inside the MapScript PHP extension instead)
  • see the updated example scripts here on the Wiki, such as:
  • quickmap.php has also been updated (see locally at /ms4w/Apache/htdocs/quickmap.php)
  • be aware that with the MapServer 8 release, many deprecated things have been removed and will now throw an error. For example, there is no longer a setMetaData() function for a Layer, in SWIG MapScript. Instead we must access the 'metadata' hashTableObj keys and values directly, here is a working example:
    <?php
      $oWMSLayer->metadata->set("wms_name", "popplace");
      $oWMSLayer->metadata->set("wms_srs", "EPSG:3978");
      $oWMSLayer->metadata->set("wms_server_version", "1.1.1");
      $oWMSLayer->metadata->set("wms_format", "image/png");
    ?>
    

Python

  • test Python MapScript at the commandline by executing:
    setenv.bat
    python -c "import mapscript; print (mapscript.msGetVersion())"
    
  • quickmap.py has been included in /ms4w/msplugins/mapscript/python/ (follow the instructions at top of file)
  • the GDAL Python utilities can be called at the commandline such as:
      setenv.bat
      gdal_merge --help
      gdal2tiles --help
    
  • test the GDAL Python module at the commandline by executing:
      setenv.bat
      python -c "from osgeo import gdal; print (gdal.VersionInfo())"
    
  • upgrade pip
      setenv.bat
      python -m pip install --upgrade pip
    

PROJ

  • Apache's conf & setenv.bat now set the environment variable PROJ_LIB to PROJ's new location:
      \ms4w\share\proj
    
    If your mapfiles set a PROJ_LIB (which is not recommended, as MS4W's Apache does this for you) you will have to update your PROJ_LIB value
  • MS4W 5.0 includes PROJ 8.2, which contains many changes:
    • allowing to dynamically pull in various grids, to improve accuracy
      • see settings in /ms4w/share/proj/proj.ini
      • since we are involved in displaying maps over the internet, we should likely have these grids locally on the server
        • execute the following to install the grids (into /ms4w/share/proj/)
            setenv.bat
            proj-install-grids.bat
          
    • all EPSG codes are stored in proj.db, an SQLite database, stored in /ms4w/share/proj/, instead of the former epsg text file

Removed Mapfile Parameters

The following (formerly deprecated) popular mapfile parameters will now cause errors in your MS4W 5.x mapfile, so you MUST REMOVE them:

  1. DUMP TRUE

Instead, you can configure querying of your layer by using METADATA instead, such as:

LAYER
  ...
  METADATA
    "wms_title"         "Populated Places"
    "wms_include_items" "all"
    "gml_include_items" "all"
    "gml_featureid"     "ogc_fid"	
  END #metadata
  ...
END #layer
  1. OPACITY at the LAYER-level

Instead it must be inside a COMPOSITE object:

LAYER
  ...
  COMPOSITE
    OPACITY 40
  END #composite
END #layer
  1. COLOR at the LAYER-level

Instead it must be inside a STYLE object:

LAYER
  ...
  STYLE
    COLOR 120 120 120
  END #style
END #layer

see the full list of removed parameters

map2img

The former shp2img commandline utility has been renamed to map2img.

Last modified 5 weeks ago Last modified on 2021-12-24T19:02:27-04:00
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