Format Downhole Columns

Choose the Manage ribbon and select Format >> Overlays to:

Add or remove downhole columns.
Change the order of columns.
Change the display style of a selected column.
Overlap columns, for example, a line graph over text or structure over lithology, for greater presentational impact.
Change the width and scale of columns.
Change the alignment of text and axis direction of graphs.
Select a fixed colour or a user defined color legend for text and lines.
Select a fixed colour, colour legend or pattern legend for graph, box and histogram fills.

Drillholes, Object Filters, Columns and Column Filters

Drillhole data objects are often coupled with 'downhole column' data to provide more information about the drillhole data. This could be in the form of a histogram, listed grade values, braces, bar charts, and so on. Downhole columns are formatted separately (using the Format Column Display Screen) from the actual drillhole data (which uses the Traces as Holes screen).

View Filtering can be applied to any object in memory, including drillholes, to control the data that is displayed at any one time. This is controlled by a filter expression which can be defined by various methods, including the Data Object Manager or, to specifically filter drillhole data, using the filter-drillholes command.

Drillhole segments and downhole columns will always honor this object-level filter. If data does not pass the filter, neither it nor the associated downhole column data will be shown.

However, the situation is slightly more complex where a 'column-specific' filter exists. All downhole columns can be associated with their own filter (using the Filter tab on the Format Columns screen). In this case, an aspect of the downhole column will only be shown if it passes both the object-level and column-level filters. For example, if a drillhole object was filtered in the Data Object Manager to only show data above the X value 150, only column and drillhole data would be shown above the 150 position. If an AU column was set to show results only where the grade surpasses the 1.0 grade cut-off point, downhole column data would only be shown above 150 in X and where grade values exceed 1.0 ppm.

To add a new column:

Manage ribbon >> Format >> Overlays.
Click Add adjacent to the Columns in View box to start the Column Wizard.
Choose whether you wish to add a Data Column or a calculated System Field and select Next.
Select a table to define the sample interval for the column and select Next.

Note: The table selected need not contain the fields you wish to display. For example, by choosing the lithology table here, and a grade field from the assays table in the next step, a composited field is created (the selected grade field is composited over the sample intervals defined by the selected table).
Select one or more fields you wish to add using the same display style.
If a composited field has been defined (the selected table does not contain the selected fields), select the Compositing Mode, Weighting Method and Compositing Parameters and click Next.
Select the Style which you want to apply to the columns.
Select End to add the columns to the Columns in View box.
Select a column in the Columns in View box and click Up or Down to change the plotting order.
Click Apply to view the changes or OK to close the screen.

To change the display style of a column:

Choose theManageribbon and selectFormat | Overlays
Select the column name in the Columns in View box.
Select the Style Templates tab screen to display the current display style. The Customized style box indicates whether the default template style has been modified. Clear the Customized style box to reset the style to the original template settings.
Select the column display style required from the gallery of pre-defined styles. Settings on the other style tabs will be modified according to the selected template.
View and modify the style settings on the other tabs as required.
Click Apply to view the changes or OK to close the screen.