XYZ Data Buffer

MAPPLOT maintains an internal data buffer that can hold XYZ data. XYZ data is positioned data defined by a location (X,Y) and data value (Z). The data buffer may contain up to 8000 data points (or up to limited memory). These data points may be read from a Geosoft XYZ file, or may be defined by some of the MAPPLOT graphics commands.

The following list summarizes the commands that work with XYZ data:

DLST

List the contents of the XYZ data buffer.

DMOV

Copy the contents on one buffer into another.

DOPN

Open an XYZ file.

DPST

Post data values from the XYZ data buffer.

DXYZ

Read a line of data from an XYZ file and load it into the XYZ data buffer.

DSCL

Shift and scale data within the buffer.

DSWP

Swap two buffers.

DWND

Window data in the XYZ buffer.

DPRJ

Project X,Y,Z data to X,Y coordinates in the XYZ buffer.

LINA,LINR,LIND

Draw lines using X,Y coordinates in the XYZ buffer.

POLY

Draw a polygon using X,Y coordinates in the XYZ buffer.

RPLV

Set a match string based on the data in the XYZ buffer.

SYMB

Draw symbols using X,Y coordinates from the XYZ buffer.

WDEF

Defines window coordinates optionally based on the data buffer data range.