Plot Priorities

When defining an entity, you are asked to nominate a priority for the entity.  This is common to all entity definitions and is a way of controlling overwriting on plots.

Overwriting is controlled in two ways:

• lines can be made to 'break' around text and symbols on a plot

• where text or symbols may overwrite on a plot, some may be clashed off

All lines, symbols and text in entity definitions are assigned priorities in the range 0 to 125. 

Different rules apply for priorities less than or equal to 100 and for those over 100.

A line will break around a symbol if:

• its priority is less than the symbol

• its priority is equal to the symbol and the priority is less than or equal to 100

A line will overwrite a symbol if:

• its priority is greater than the symbol

• its priority is equal to the symbol and the priority is greater than 100

A line will never clash a symbol off the plot and all lines of any priority cross without effect.

 

A symbol will clash another symbol off the plot if:

• it has higher priority or,

• it has the same priority, less than or equal to 100 and is the first symbol processed in preparing the map.

Two symbols with the same priority greater than 100 will overwrite.