Autocalc

Autocalc means real-time calculation of anomalies as you change the model. You get direct feedback as to how changes to the model will affect the calculated response. GM-SYS Profile Modelling only recalculates the portion of the model that is changed, substantially speeding calculation process.

Autocalc may be globally turned on or off by toggling the Magn. Auto and/or Grav. Auto options in the Compute menu.

Some operations will cause the "Model Changed" flag(s) to be set, requiring a manual recalculation. These include aborted operations, changing the earth's magnetic field parameters, and undo.