Open Printable/Searchable Copy - Global Mapper

Global Mapper User's Manual
source is added, you can use the Remove Source button to remove it from the list of available data sources at a
later time. If you need to specify additional options for the WMS server, such as forcing a particular image
format to be used, add those parameters after the Service Name parameter. For example, to force the use of
the JPG format, you might specify a Service Name parameter of 'WMS&format=image/jpeg'. To force a
particular projection that the server supports to be used, include a SRS parameter, like
'WMS&SRS=EPSG:26905' to force the use of the UTM projection with the NAD83 datum and zone 5N.
You can also right-click on the added WMS layer in the list of sources and set a maximum zoom level (in
meters per pixel) for the layer. For example you can specify a maximum zoom level of 5.0 meters per pixel,
so when loading data from the source no tiles with a resolution greater than 5.0 meters per pixel will be
downloaded. This is useful for sources that don't specify themselves what the maximum resolution should be
and just go blank when you overzoom them.
You can also right-click on the added WMS layer in the list of sources and check whether or not to download
as tiles when drawing or to download a single image for each draw operation. The default is to use tiles as that
allows caching so that if you revisit an area at the same zoom level you don't have to redownload it. However
if you have a source that adds a watermark to each tile this may be undesirable. Uncheck this option to disable
the use of tiles for display. They will still be used for export as the size of exports makes it impossible to fetch
all at once in many cases.
If you choose the OSM, Google Maps, or TMS source type, then the OSM/TMS Tile Source Defintion dialog
(pictured below) is displayed, allowing you to setup the source. You need to specify the base URL where the
data for the tiled source can be found (this should be the folder under which the folders for each zoom level
are stored). You can also provide a URL with variables named %x (column), %y (row), and %z (zoom scale)
in the URL so that you can setup the URL however your data source requires rather than using the default
expected URL setup. If accessing a source setup similar to Bing Maps tiles, you might need to use the
quadtree filename. Use %quad to do this. This replaces the %x, %y, and %z values. Finally the Bing Maps
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