A data set is an arbitrary number of X, Y, Z points, where X and Y are abstract planar coordinates and Z is a value at that coordinate.

DATA.DAT is an example data file. Each data point occupies one line. X, Y, Z values are divided by blanks or commas. An optional fourth column indicates the data point name, a continuous alphanumeric string.

The first three lines begin with alphabetic characters, indicating an optional map title.

A data point filename can be entered from the command line FIELD DATA.DAT or from the “File->Open” menu.

Data point input is immediately displayed on the screen.