Proportional Symbol Legend

Use the Proportional Symbol Legend option (PROPSYMBLEG GX) to place a legend describing the proportional symbol scheme on your map.

The option is available with the following extensions and menus:

  • Map Tools > Symbols menu

  • Geochemistry extension: Geochem Map > Point Plots menu

  • Grav/Mag Interpretation extension: Euler 3D > Plot Solution Symbols menu

Proportional Symbol Legend dialog options

Title for legend (Optional)

Title for the legend (optional)

Script Parameter: PROPSYMBLEG.TITLE

Subtitle for legend (Optional)

Width of the legend box in map units (optional)

Script Parameter: PROPSYMBLEG.SUBTITLE

X Position (mm)

Location of the bottom left corner of the legend in the X-axis.

Script Parameter: PROPSYMBLEG.X

Y Position (mm)

Location of the bottom left corner of the legend in the Y-axis.

Script Parameter: PROPSYMBLEG.Y

Font size

The font size in map units.

Script Parameter: PROPSYMBLEG.FONTSIZE

Zero base level (data units)

Zero base level (data units). This value is subtracted from the data value in the size channel, before the scaling factor is applied. Values less than or equal to the base level are not plotted.

Script Parameter: PROPSYMB.BASE

Scale factor (data units/mm)

Symbol scale size units/mm.

Script Parameter: PROPSYMB.SCALE

Number of symbols

The number of different sized symbols to plot.

Script Parameter: PROPSYMBLEG.NSYMBOLS

Smallest value plotted

The smallest valued symbol. The symbols form a linear series, starting at this value, and increasing by the increment.

Script Parameter: PROPSYMBLEG.START

Increment in values plotted

Increment in the data value from symbol to symbol.

Script Parameter: PROPSYMBLEG.INCREMENT

Symbol

Set the symbol parameters. Defaults are taken from the PROPSYMB GX values.

Application Notes

The Legend plots the symbols on the left, with the corresponding data values on the right. The spacing adjusts to the largest symbol plotted.

Default values are set from both the PROPSYMB GX (Proportional Size Symbol Plot) and the CLASYMB2 GX (Colour Symbols and Proportional Scaling).