MapServer – MapServer (MS4W) Test Page from Shapefile Shows Only Blank White Square

mapserverms4wshapefile

I am trying to create a test page with mapserver and shapefile. At the moment I just want to get the map shown on my test page.
I have gotten the EXTENT coordinates by opening shapefiles with QGIS – I am sure those are correct.
I have followed this tutorial as an example.

I am accessing my test page via this link:

http://localhost:1025/cgi-bin/mapserv.exe?map=C:\MS4W\ms4w\Apache\htdocs\mapfile.map

Problem I have – map is not loaded – I only see a blank white square.

When I look at contents of ms4w\Apache\htdocs\output , I see that images are actually getting generated but all of them are white (empty), for example:

lat_pmts_region13941906093724.png
lat_pmts_region13941910095144.png
lat_pmts_region13941913405500.png
...

Shapefiles are located at this location: C:\MS4W\ms4w\Apache\htdocs\shapefiles.

An example of what is logged to error file:

[Fri Apr 11 11:19:32 2014].883000 CGI Request 1 on process 7888
msWCSDispatch20(): wrong service (none)
msWCSParseRequest(): request is KVP.
msWCSDispatch(): SERVICE and REQUEST not included
msDrawMap(): rendering using outputformat named png (AGG/PNG).
msDrawMap(): WMS/WFS set-up and query, 0.000s
msDrawMap(): Layer 0 (lat_pmts_region), 0.001s
msDrawMap(): Drawing Label Cache, 0.000s
msDrawMap() total time: 0.002s
msSaveImage(C:/MS4W/ms4w/Apache/htdocs/output/lat_pmts_region13972043727888.png) total time: 0.138s
[Fri Apr 11 11:19:33 2014].24000 mapserv request processing time (loadmap not incl.): 0.141s
[Fri Apr 11 11:19:33 2014].24000 msFreeMap(): freeing map at 0246EFD8.

ms4w\Apache\htdocs\template.html:

<html>
<head><title>Mapserver Template HTML Document</title></head>
<body bgcolor=#AAAAAA>
<h2>Template</h2>
<img src="[img]" border=1>
</body>
</html>

It looks like this:
Test page looks like this

C:\MS4W\ms4w\Apache\htdocs\mapfile.map:

MAP
    CONFIG "MS_ERRORFILE" "C:/MS4W/ms4w/tmp/ms_error.txt"
    DEBUG 5
    NAME lat_pmts_region
    STATUS ON
    SIZE 800 600

    EXTENT 286878.53 142087.25 799084.10 481123.75
    #   lat_pmts_region

    UNITS METERS
    SHAPEPATH "shapefiles"
    IMAGECOLOR 155 155 155

    WEB
    TEMPLATE "template.html"
    IMAGEPATH "C:/MS4W/ms4w/Apache/htdocs/output/"
    IMAGEURL "/output/"
    END

    LAYER
    NAME "lat_pmts_region"
    DATA lat_pmts_region
    STATUS DEFAULT
    TYPE POLYGON
    END
END

I will gladly provide more information if it's asked.

Best Answer

You should add at least one CLASS/STYLE to your LAYER block:

CLASS STYLE COLOR 0 0 0 END END

Related Solutions

[GIS] How to add a simple interface to mapserver CGI application

After a lot of trials and errors, I have come up with solution which has this functionality:

zoom in;
zoom out;
center map;
legend (embedded into map, check section LEGEND );
scalebar (embedded into map, check section SCALEBAR).
reference map (displayed nex to map, check section REFERENCE).
make persistent changes to map (for example, I click a button, layer x becomes hidden and stays hidden even when I keep zooming in/out of the map)

I also wanted to show information about an object user clicked. But that can only be achieved with MapServer WMS, but I'm only using MapServer CGI.

Tested on mapserver 6.0.3 (as part of MS4W package) and also 6.4.3 (as part of OSGeo4W package).

Below are contents of mapfile and template files. I tried to cut them down to make them easier to understand.

mapfile.map:

MAP
    NAME country_map
    STATUS ON
    SIZE 800 500

    EXTENT 313187.4 146161.56 766469.92 470367.64

    UNITS METERS
    SHAPEPATH "shapefiles"
    IMAGECOLOR 155 155 155

    SCALEBAR
        IMAGECOLOR 255 255 255
        LABEL
            COLOR 0 0 0 
            SIZE SMALL
        END
        SIZE 150 5
        COLOR 255 255 255
        BACKGROUNDCOLOR 0 0 0
        OUTLINECOLOR 0 0 0
        UNITS kilometers
        INTERVALS 5
        STATUS EMBED
    END   

    LEGEND
      STATUS EMBED
      POSITION UL
      KEYSIZE 18 12
      LABEL
        TYPE BITMAP
        SIZE MEDIUM
        COLOR 255 0 0
      END
    END

    REFERENCE
        IMAGE 'img/reference.png'
        SIZE 400 250
        EXTENT 313187.4 146161.56 766469.92 470367.64
        STATUS ON
        MINBOXSIZE 1
        MAXBOXSIZE 300
        COLOR -1 -1 -1
        OUTLINECOLOR 0 0 0
        MARKERSIZE 8
        MARKER 'star'
    END

    WEB
        TEMPLATE "template.html"
        IMAGEPATH "C:/MS4W/ms4w/Apache/htdocs/gis/output/"
        IMAGEURL "/gis/output/"
    END

# country background
    LAYER
    NAME "country_background_layer"
    DATA country_background_layer
    STATUS ON
    TYPE POLYGON
        CLASS
            NAME "Latvija" # shown in legend
            STYLE
                COLOR 0 255 0
            END
        END
    END 

# lakes
    LAYER
        NAME "lake_layer"
        DATA lake_layer
        STATUS ON
        TYPE POLYGON
        CLASS
            NAME "Lakes" # shown in legend
            STYLE
                COLOR 0 0 255
            END
        END
    END  

# cities
    LAYER
        NAME "city_layer"
        DATA city_layer
        STATUS ON
        TYPE POLYGON
        CLASS
            NAME "Cities" # shown in legend
            STYLE
                COLOR 255 0 0
            END
        END
    END  

END

template.html

<!-- MapServer Template -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/transitional.dtd">
<html  dir="ltr" lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>MapServer CGI</title>
</head>
<style>
#left
{
    padding: 3px;
    display: block;
    float: left;
}

#right
{
    padding: 3px;
    display: block;
    float: left;
}

p.title
{
    font-weight: bold;
    text-align: center;
    background-color: #ccc;
}

</style>
<body>
    <form method="GET" action="mapserv.exe">
        <input type="hidden" name="map" value="[map]">
        <input type="hidden" name="imgext" value="[mapext]">
        <input type="hidden" name="imgxy" value="149.5 199.5">
        <input type="hidden" name="program" value="[mapserv.exe]">
        <div id="container">
            <div id="left">
                <input type="image" name="img" src="[img]" style="border:1; border: 1px solid black; width:800; height:500">
            </div>

            <div id="right">

                <p class="title">Reference map:</p>
                <input type="image" name="ref" src="[ref]" border="0" />

                <p class="title">Zoom:</p>
                <select name="zoom" size="5">
                    <option value="3" [zoom_3_select]> Zoom in 3 times
                    <option value="2" [zoom_2_select]> Zoom in 2 times
                    <option value="1" [zoom_1_select]> Center map
                    <option value="-2" [zoom_-2_select]> Zoom out 2 times
                    <option value="-3" [zoom_-3_select]> Zoom out 3 times
                </select>

                <p class="title">Layers:</p>
                <table>
                    <tr>

                        <td>
                            <input type="checkbox" name="layer" id="country_background_layer" value="country_background_layer"[country_background_layer_check] />Country<br />
                        </td>

                        <td>
                            <input type="checkbox" name="layer" id="city_layer" value="city_layer"[city_layer_check] />Cities<br />
                        </td>

                        <td>
                            <input type="checkbox" name="layer" id="lake_layer" value="lake_layer"[lake_layer_check] />Lakes<br />
                        </td>
                    </tr>
                </table>
                <input type="submit" name="submit" value="Refresh">
            </div>
        </div>
    </form>
</body>
</html>

[GIS] MapServer map file shows Raster image as white

There are two options 1) if input data is 16 bit convert into 8 bit data. 2)By placing PROCESSING "SCALE=AUTO" as follow

 MAP
NAME "terra"
# Map image size
SIZE 600 600
UNITS dd
EXTENT 77.0962025047 23.8718740333 84.6389301196 30.4075924299
  PROJECTION
   'proj=longlat'
   'ellps=WGS84'
   'datum=WGS84'
   'no_defs'
  END
  # Background color for the map canvas -- change as desired
  IMAGECOLOR 155 155 155
  IMAGEQUALITY 95
  IMAGETYPE png

  OUTPUTFORMAT
   NAME png
   DRIVER 'GD/PNG'
   MIMETYPE 'image/png'
   IMAGEMODE RGBA
   EXTENSION 'png'
  END
  # Legend
  LEGEND
      IMAGECOLOR 255 255 255
    STATUS ON
    KEYSIZE 18 12
    LABEL
      TYPE BITMAP
      SIZE MEDIUM
      COLOR 0 0 0
    END
  END

  # Web interface definition. Only the template parameter
  # is required to display a map. See MapServer documentation
  WEB
    # Set IMAGEPATH to the path where MapServer should
    # write its output.
    IMAGEPATH "../tmp"

    # Set IMAGEURL to the url that points to IMAGEPATH
    # as defined in your web server configuration
    IMAGEPATH "../tmp"

    # WMS server settings
    METADATA
      'wms_title'           'terra'
      'wms_onlineresource'  'http://my.host.com/cgi-bin/mapserv?map=wms.map&'
      'wms_srs'             'EPSG:4326'
    END

    #Scale range at which web interface will operate
    # Template and header/footer settings
    # Only the template parameter is required to display a map. See MapServer documentation
  END
  LAYER
    NAME "UPC1PAN10SISDP2012"
    TYPE RASTER
    PROCESSING "SCALE=AUTO"
    OFFSITE 0 0 0
    DATA 'Z:\Rasters\10K\10D\UP\UPC1PAN10SISDP2012.img '
    METADATA
      'wms_title' 'UPC1PAN10SISDP2012'
      'WMS_ENABLE_REQUEST' '*'
    END
    STATUS DEFAULT
    TRANSPARENCY 100
    PROJECTION
    'proj=longlat'
    'ellps=WGS84'
    'datum=WGS84'
    'no_defs'
 ''
    END
  END

END

Best Answer

Related Solutions

[GIS] How to add a simple interface to mapserver CGI application

[GIS] MapServer map file shows Raster image as white

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