This command defines equations using any existing strata attributes
and data points as
variables. These equations allow you to create new attributes based on
a combination of strata
data and values. The new attributes can then be used as data models in
many routines such as
Make Strata Grid or Strata Isopach
Maps. This routine is useful for compositing or diluting
thickness grids, or generating delivered quality grids in the initial
modeling process. After selecting
the drillholes, the Define Strata Equations window appears. The
selected drillholes are read to
find all the available strata and attribute names for the equations.
The Define Strata Equations
dialog is for adding or removing equations, editing existing ones and
loading and saving the
equations to a .DEQ file.
User-defined drillhole attributes can now be modeled, such as water
table,
transgressive horizons or total depth of hole. The first
step is to define a drillhole attribute in the
drillhole definition file. After the holes have
been assigned values for the drillhole attribute,
they will appear on the list for Define Equations.
If just that one value is selected and added, then if will appear on
the list as an
equation, capable of being isopached or gridded.
The window for the equation editing and selection has a list of all available equation variables. Equations can also contain values in addition to the drillhole variables. After defining the *.deq file, all routines that list the available strata attributes will have "EQUATIONS" at the top of the list. Selecting that will bring up a dialog window with a list of the user-defined equation names.
Select the Drillholes to process.
Select objects: pick drillholes to read strata and
parameters from
Define Strata Equations Dialog
Pulldown Menu Location: Drillhole in Advanced Mining
Keyboard Command: chequate
File Name: \lsp\corehole.arx