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

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• KML_POINT_ELEVS_RELATIVE (KML only) - specifies that the elevation values associated with<br />

3D Point features are relative to the terrain surface rather than relative to sea level. Use<br />

KML_POINT_ELEVS_RELATIVE=YES to enable.<br />

• KML_POINT_EXTRUDE (KML only) - specifies that 3D point features displayed in Google Earth<br />

should be extruded from the surface by drawing a thin line from the surface to the point. Use<br />

KML_POINT_EXTRUDE=YES to enable.<br />

• GEN_MULTI_PATCH (SHAPEFILE only) - specifies that area features exported to a Shapefile<br />

should be stored as multi-patch features rather than areas. Use GEN_MULTI_PATCH=YES to<br />

enable.<br />

• ADD_LAT_LON (CSV only) - specifies that lat/lon columns should be added to a CSV export. Use<br />

ADD_LAT_LON=YES to enable.<br />

• VERSION (LOWRANCE_USR only) - specifies which version of USR file to create. Must be 3 or 4.<br />

By default VERSION=3 is used.<br />

GENERATE_CONTOURS<br />

<strong>Global</strong> <strong>Map</strong>per User's Manual<br />

The GENERATE_CONTOURS command allows for the generation of contour lines (isolines of equal<br />

elevation) from any or all currently loaded elevation data. The following parameters are supported by the<br />

command.<br />

• ELEV_UNITS - specify elevation units to use in export<br />

♦ FEET - export in US feet<br />

♦ METERS - export in meters<br />

• INTERVAL - specifies the contour interval to use. This must be a whole number greater than 0. The<br />

units are specified with the ELEV_UNITS parameter described above. If you wanted to generate a<br />

contour file with an interval of 20 feet, you would use INTERVAL=20 ELEV_UNITS=FEET in the<br />

parameter list. If no interval is provided, a default one is guessed based on the elevation range of the<br />

loaded elevation data.<br />

• SPATIAL_RES - specifies spacing of grid points used to determine contour position. A smaller grid<br />

spacing results in higher fidelity, but larger, contours. Typically you'll want to use the default value<br />

which is the minimum spatial resolution of all loaded data. Should be formatted as<br />

x_resolution,y_resolution. The units are the units of the current global projection. For example, if<br />

UTM was the current global projection and you wanted to use a grid with a 30 meter spacing, the<br />

parameter/value pair would look like SPATIAL_RES=30.0,30.0.<br />

• SPATIAL_RES_METERS - specifies spatial resolution to use in meters. The value in meters will<br />

automatically be converted to the curent view/export projection units. For example, to do an export at<br />

2.0 meter spacing (or as close as you can get to that in the current units), use<br />

SPATIAL_RES_METERS=2.0, or to do an export at 1.0 meters in X by 1.5 meters in Y, use<br />

SPATIAL_RES_METERS="1.0,1.5".<br />

• GLOBAL_BOUNDS - specifies the contour bounds in units of the current global projection. There<br />

should be 4 values in a comma-delimited list following the parameter name. The values should be in<br />

order of minimum x, minimum y, maximum x, maximum y.<br />

• GLOBAL_BOUNDS_SIZE - specifies the contour bounds in units of the current global projection.<br />

There should be 4 values in a comma-delimited list following the parameter name. The values should<br />

be in order of minimum x, minimum y, width in x, width in y.<br />

• LAT_LON_BOUNDS - specifies the contour bounds in latitude/longitude degrees. There should be 4<br />

values in a comma-delimited list following the parameter name. The values should be in order of<br />

westmost longitude, southernmost latitude, easternmost longitude, northernmost latitude.<br />

<strong>Map</strong> <strong>GPS</strong> <strong>Coordinates</strong> - <strong>GPS</strong> <strong>Map</strong> <strong>Coordinates</strong> - <strong>GPS</strong><strong>Coordinates</strong> <strong>Map</strong> 236

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