Datamine Discover KB - Section Manager

How do I digitize (boundaries) on my sections?

kbadmin — Fri, 09 Feb 2024 04:30:54 GMT

Solution

In Discover 2012, the method for creating and managing your digitizations and interpretations on drillhole cross sections has slightly changed.

You can now add "digitize boundary layers" - via the Section Manager, by

1. Selecting the Sections you wish to add a custom layer to
2. And then select Advanced>Add Section Layer

Note that this enhanced functionality now allows batch add/deletion - and also multiple layers with custom name suffix and fields.

To view these in 3D, select Discover3D>View Section Layer

How do I display voxel / block models on my cross-sections?

Josh Knight — Wed, 03 Feb 2021 02:28:08 GMT

Discover3D can not only display mining package block models and create voxel models, it also has the ability to export voxel models as vector slices along multiple cross-sections. These vector slices are automatically associated with the cross-sections (i.e. automatically recognised and handled by the Section Manager), and comprise a polygon for each intersected voxel cell, attributed with that voxel cell's value.

This capability therefore opens a wealth of further analytical options within your 2D drillhole cross-sections. For example, resource calculations assisted via clipping these voxel slice polygons to interpreted high grade regions, or converting these vector slices into gridded surfaces for more advanced visualisation (e.g. contouring) and analysis.

Example

For instance, this functionality allows you to effortlessly take a 3D voxel model of say Cu mineralisation, such as :

And slice / intersect them across multiple 2D sections, producing attributed polygons representing the sliced voxel cells on a per section basis:

Solution

1/. Ensure the target cross-sections are ...

How do I refresh my drillhole data and regenerate a section?

kbadmin — Thu, 28 Jan 2021 23:30:01 GMT

Occurrence

Existing drillhole cross-sections and plans may need to be updated after updates and additions to a drillhole projects collar, survey and/or downhole data tables. Examples of changes to these files that may warrant section regeneration include:

- new drillholes are added to a project (including splay/daughter holes)

- new downhole data intervals (from/to) added, such as hole extensions

- new columns are added to the table for new assay elements

Solution

1/. Ensure the drillhole project's source MapInfo Pro tables have been updated with the new information, whether these need to be refreshed via a database link, appended to or replaced linked files.

If the source tables are linked tables, such as Excel, CSV or Access database, if there are no changes to the columns and table structure, simply overwrite the file with the new file (keep the name the same). For the collar table, you will also need to update the point locations using Discover>Update Coordinates

NOTE DO NOT refresh linked tables by going back to the Open table and overwriting the existing tab file. The ...

How do I display a 3D vector file from another application into a Drillhole Section?

kbadmin — Thu, 21 May 2020 23:37:55 GMT

Solution

You can do this, by selecting all sections you wish to display it on in the section manager (select multiple by CTRL>Left Click).

Then go to the Section Manager>Analytical Tools>Display 3D Model on Section

This allows the easy display of multiple .DXF and Discover 3D .FDB vector models onto the selected cross-sections as attributed polygons and polylines, each in their own TAB file layer. These input models can be polyhedron volumes (e.g. mineralisation isosurface halos or proposed open cut wireframes) or surfaces (such as fault planes or unconformity wireframes/TINS) modelled in either Discover 3D or a 3rd party application.

The tool will display the intesection of the vectors with with 2D section plane.

NOTE It will not project or include all data in the envelope, it will only show data that intersects the section plane. If you wish to see all data within a section envelope, you can do this dynamically with the Discover3D Cursor Plane.

For instance, this functionality allows you to take your 3D models, such as :

And slice / intersect them across multiple 2D sections, with an assigned style per model, producing polygons and polylines stored and managed on a per section basis:

Occurrence

When I try to open the Section Manager I cannot see it on screen. It is listed in the Explorer windows list, but I cannot see it. The recover Windows does not help.

Solution

Navigate to the folder -

C:\Users\USERNAME\AppData\Local\Encom\Discover

And delete the files stored here. Then restart MapInfo Discover.

Drillhole Pierce Points - a powerful way to analyze and enhance your long-sections

kbadmin — Wed, 04 Sep 2019 01:27:24 GMT

The Create Pierce Point Layer tool is found within the Section Manager -

This converts downhole intervals into attributed MapInfo Professional Point symbols. This significantly enhances the display and analytical options for this data on long- and cross-sections, such as:

A range of label positions for composited intervals, such as created with the Downhole Object Clip tool. Pierce points can be created at the top, mid-point, or bottom of an interval; the shallowest of deepest RL; or the location closest to or furthest from the viewer.

Use of MapInfo Pro symbols to highlight and reinforce particular intercepts (for instance, locations where boreholes have intercepted an aquifer/watertable)

Thematic mapping or geochemical data classification of pierce points (derived from clipped to 3D volume and/or composited intervals) allows for the powerful and effective display of high grade (or grams per meter) intercept values.

Surface gridding / interpolation of pierce points values (such as grade or gram/meter values) extends the advanced analysis and trend interpretation options, including resource calculations.

Some examples of the various pierce point outputs, and the display and analysis options they provide:

(1) Using a source file of downhole assays clipped to an orebody volume and then Composited by Cut-Off Grade, resulting in discrete high-grade intercepts.

It is possible to display a raster on a Discover cross section, however, it will require the registration of the image to the cross section coordinates.

Please note that Discover cross sections are only in 2D space in a non-earth meters projection. See the related articles for more details.

The the process is the same as you would register any other image, i.e. use Discover>Images>Rectify Image.

All you will need to do is have both your unregistered image file open in MapInfo along with the Section you want to register from.
The Rectify Image tool will allow you to register control points on the image which relate to control points on the registered cross section.

When you are registering the image for the cross section do this in Non Earth (Meters) coordinate space as the cross section window is located in Non-Earth (Meters) coordinate space

Also if you save the image in the section folder, and prefix the file name with the section .e.g. "Section1_Image.tab", it will then automatically open/close with the Section Manager and other section layers.

How do I highlight different drillhole types on a section, such as Planned holes, or RAB vs RC vs DDH?

Josh Knight — Mon, 24 Mar 2014 01:51:27 GMT

Solution

A couple of tips that may assist you with the current version of Discover (v2013).

1/. To highlight 'Planned' holes.

In addition to adding the planned hole/s' collar (and survey entries if needed) information, add a single lithology entry for each planned hole to the lithology table, spanning it's entire depth (e.g. From 0 To 300). Assign an attribute such a 'Planned' to the appropriate lithology field. We'll be leveraging this via a lithology trace shade. When the updates are done, Save the changes, and 'Recache the Drillhole Project'.

In the projects 'lithology' legend (in the Legend Editor), add a new row, called 'Planned' and set a colour/pattern that stands out for planned holes (my example below is orange vertical stripes).

Then apply this to one or more sections. Example output as below:

2/. To separate drillholes by type

a. Add a 'Type' character field to your project's collar table, and attribute as necessary (such as 'RAB', 'RC' and 'Planned'). Save, and Recache the project.

b. Create 3 queries (I used Discover's Data Utilites>Select by Group) from this collar tab ...