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

Global Mapper User's Manual
useful if elevation data is present at the end of the lines. By default, the value of this attribute is NO.
• INC_ELEV_COORDS - this parameter controls whether or not the value right after the 2nd
coordinate column (if there is one) will be treated as an elevation value. Use
INC_ELEV_COORDS=YES or INC_ELEV_COORDS=NO to enable (the default) or disable this
behavior.
• COL_HEADERS - controls whether or not the first line of the file should be used as column headers
for coordinate line attributes later in the file. Setting this to yes is useful for things like CSV files with
column headers in the first row, otherwise set it to NO (the default).
• PROJ_NAME - specifies the name of the projection to use for this file (this will override any
projection information stored in the file). This name must have been defined with a prior
DEFINE_PROJ command.
• PROJ_FILENAME - specifies the name of the projection (.prj) file to use for this file (this will
override any projection information stored in the file).
• PROJ_EPSG_CODE - specifies the numeric EPSG projection code that defines the projection for this
file (this will override any projection information stored in the file). For example, use
PROJ_EPSG_CODE=26715 to define a UTM zone 15 projection with NAD27 as the datum and
meters as the units.
• PROMPT_IF_PROJ_UNKNOWN - set to NO if you don't want the user to be prompted to select a
projection if the projection of the file cannot be automatically determined.
• ELEV_UNITS - specify elevation units to use for this file if it contains gridded elevation data
♦ 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
• SKIP_COLUMNS - specifies the number of columns (fields) to skip at the start of a coordinate line
before trying to read the coordinates. For example, if the X and Y coordinates of a line were in the 3rd
and 4th columns of the coordinate line, you'd use a value of SKIP_COLUMNS=2. The default value
is 0, meaning that coordinates must be in the first two columns.
• SKIP_ROWS - specifies the number of rows to skip at the start of a file before trying to read any data.
For example, if your file has a fixed header of 20 lines, you would use SKIP_ROWS=20 to skip those
header rows.
• BREAK_COL_IDX - specifies the 1-based index of the column to break features at if the value in
that column changes.
• COORD_OFFSET - specifies the offset to apply to any coordinates read in from the file. This offset
will be added to each coordinate read in from the file. The offset should be specified as a
comma-delimited list of the X, Y, and Z offsets, such as COORD_OFFSET=100000.0,200000.0,0.0
• COORD_SCALE - specifies the scale factor to apply to any coordinates read in from the file. Each
coordinate will be multiplied by these scale factor after being read in from the file. The scale factors
should be specified as a comma-delimited list of the X, Y, and Z scale factors, such as
COORD_SCALE=0.1,0.1,1.0
• NO_DATA_DIST_MULT - specifies how far from an actual data point a grid cell has to be before it
is treated as a no data value. This number is given as a multiple of the diagonal size of a single grid
cell as nominally determined by the gridding algorithm or specified with the SPATIAL_RES
parameter. A value of 0 means that all points should be considered as valid.
• SPATIAL_RES - specifies spatial resolution to use when generating an elevation grid from the data.
Defaults to a good value for maintaining the full spatial resolution of the provided point data if not
specified. Should be formatted as x_resolution,y_resolution. The units are the units of the projection
specified for the file. For example, if UTM with meter units was the file projection and you wanted to
export at 30 meter spacing, the parameter/value pair would look like SPATIAL_RES=30.0,30.0.
Map GPS Coordinates - GPS Map Coordinates - GPSCoordinates Map 251