Open Printable/Searchable Copy - Global Mapper

UNLOAD_ALL
The UNLOAD_ALL command unloads all currently loaded data. This command takes no parameters.
The following parameters are supported by the command:
• VECTOR_ONLY - specifies that only layers containing vector data shall be unloaded. All raster and
gridded elevation layers will remain loaded. Use VECTOR_ONLY=YES to enable unloading just the
vector layers.
UNLOAD_LAYER
The UNLOAD_LAYER command allows you to unload all previous loaded layers with a given filename.
This is useful if you don't want to unload all previously loaded layers just to get rid of a few of them.
The following parameters are supported by the command:
• FILENAME - filename of the layer to unload. If an empty value is passed in, all layers that were
created by the script, such as those from a GENERATE_CONTOURS command, will be unloaded.
You can also pass in the value 'USER CREATED FEATURES' when running a script in the context
of the main map view or loading a workspace to have the 'User Created Features' layer unloaded. You
can also pass in the full description of the loaded layer to use in case you want to unload a layer not
loaded from a file.
VAR_LOOP_END
The VAR_LOOP_END command ends a loop of commands over a range of numeric values. See the
VAR_LOOP_START command for details.
VAR_LOOP_START
Global Mapper User's Manual
The VAR_LOOP_START command begins a loop of commands over a range of numeric values or through a
sequence of characters. This can be used as a simple counter or for more powerful things like custom gridding
using coordinate values and naming exported files using the coordinates. Note that it is possible to nest loops
and use different variable names for each loop to build complex filenames.
For any commands found within a VAR_LOOP_START...VAR_LOOP_END pair defining a loop, the
current value of the loop variable will be available as a variable name. By default this will be %COUNTER%,
but you can use the VAR_NAME parameter (see below) to make it whatever name that you want. By default
some generic numeric formatting will be provided (i.e. whole numbers won't have a decimal or any leading
0's), but you can also provide custom formatting for the numeric value as a C-style format string like you
would pass to a printf command using the VAL_FORMAT parameter (see below for details).
The following parameters are used by the VAR_LOOP_START command.
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