Map GPS Coordinates - GPS Map Coordinates ... - Global Mapper

Global Mapper User's Manual
• LAYER1_FILENAME - full path and filename of the first loaded terrain layer to use. You can also
pass in the full description of the loaded layer to use in case you want to use a layer not loaded from a
file.
• LAYER2_FILENAME - full path and filename of the second loaded terrain layer to use. You can also
pass in the full description of the loaded layer to use in case you want to use a layer not loaded from a
file.
• COMBINE_OP - defines the operation to perform when combining the layers. The following
operations are supported:
♦ ADD - adds the values from the first layer to the second
♦ SUBTRACT_SIGNED - subtracts the values of the second layer from the first and saves the
signed result.
♦ SUBTRACT_UNSIGNED - subtracts the values of the second layer from the first and saves
the magnitude of the result.
♦ AVERAGE - saves the average of the values from the first and second layers.
♦ MINIMUM - saves the smaller of the values from the first and second layers.
♦ MAXIMUM - saves the larger of the values from the first and second layers.
♦ MULTIPLY - multiplies the values from the first and second layers. If one or both of the
values is missing, the sample is marked as invalid.
♦ DIVIDE - divides the value from the first layer by the value in the second layer. If one or both
of the values is missing or if the second value is 0, the sample is marked as invalid.
♦ FILTER_KEEP_FIRST - saves the first layer value if the second layer value is valid.
♦ FILTER_KEEP_FIRST_IF_GT_SECOND - saves the first layer value if the second layer
value is valid and the first layer value is greater than the second layer value.
♦ FILTER_KEEP_FIRST_IF_LT_SECOND - saves the first layer value if the second layer
value is valid and the first layer value is less than the second layer value.
• LAYER_DESC - specifies the name to assign to the newly generated terrain layer. If no layer
description is provided, the default name of "Combined Elevation Grid" will be used.
• ELEV_UNITS - specify elevation units to use in new terrain layer
♦ FEET - export in US feet
♦ DECIFEET - export in 10ths of US feet
♦ METERS - export in meters
♦ DECIMETERS - export in 10ths of meters
♦ CENTIMETERS - export in centimeters
• SPATIAL_RES - specifies spatial resolution. Defaults to the minimum spatial resolution of the two
layers if not specified. Should be formatted as x_resolution,y_resolution. The units are the units of the
current global projection. For example, if UTM was the current global projection and you wanted to
export at 30 meter spacing, the parameter/value pair would look like SPATIAL_RES=30.0,30.0.
• SPATIAL_RES_METERS - specifies spatial resolution to use in meters. The value in meters will
automatically be converted to the curent view/export projection units. For example, to do an export at
2.0 meter spacing (or as close as you can get to that in the current units), use
SPATIAL_RES_METERS=2.0, or to do an export at 1.0 meters in X by 1.5 meters in Y, use
SPATIAL_RES_METERS="1.0,1.5".
• GLOBAL_BOUNDS - specifies the combine bounds in units of the current global projection. There
should be 4 values in a comma-delimited list following the parameter name. The values should be in
order of minimum x, minimum y, maximum x, maximum y.
• GLOBAL_BOUNDS_SIZE - specifies the combine bounds in units of the current global projection.
There should be 4 values in a comma-delimited list following the parameter name. The values should
be in order of minimum x, minimum y, width in x, width in y.
• LAT_LON_BOUNDS - specifies the combine bounds in latitude/longitude degrees. There should be
4 values in a comma-delimited list following the parameter name. The values should be in order of
westmost longitude, southernmost latitude, easternmost longitude, northernmost latitude.
Map GPS Coordinates - GPS Map Coordinates - GPSCoordinates Map 209