Drillhole Selection Tool (Select by Area)

The Hole Selection Tool enables custom selection of single or multiple holes using a dialog that displays a plan view of the drillhole project. This tool enables you to view "all holes", "selected holes" and holes including "full traces" or "labels". You can select interactively by drawing a polygon or by clicking holes individually. This method is best used if you have pre-existing knowledge of your drillholes and is an excellent way to preview the locations of your drillhole and the extents of your drillhole traces.

Use this dialog to interactively select drillholes by area.

To Select Drillholes using the Hole Selection Tool:

  1. On the DH-Plot menu, click Select Holes and then select Selection Tool.
    The Hole Selection Tool will appear.

  2. In the Display section of the dialog, select All holes or Selected holes, and select if the holes include Full traces and Hole labels.

  3. The drillhole plan view area can be modified using the Zoom In button, the Zoom Out button and the Zoom Data Extents button.

  4. In the Selection Tools section of the dialog, you can select the Select All or Select None buttons, or depending on the Selection Mode, you can Select/Deselect single holes , Select/Deselect using rectangle tool or Select/Deselect using polygon tool.

  5. To deselect all the holes click the Select None button.

  6. Set the Selection Mode to Select, and using the Select/Deselect buttons described above (single holes, rectangle tool, polygon tool), select the drillholes. Selected drillholes will be highlighted, while deselected holes will be faded, as shown below.

Hole Selection Tool

Display

All holes

Select All holes radio button to display all holes. This does not change the current list of "selected" holes, but only which holes are visible here. Those holes which are "selected" are displayed as filled red circles, while "unselected" holes are displayed as open red circles.

Selected holes

Select Selected holes radio button to display only the selected holes.

Full Traces

Check to plot the Full Trace. This setting does not alter how the holes are finally plotted. That must still be done through the Hole Traces tab.

Hole Labels

Check to plot the Hole Labels. The labels can be turned off, as the display may be "too busy" when all the collars are displayed close together.

image\ebx_-2051992292.jpg Zoom in on an area.

Use this button to zoom the display into a selected area. Click on a starting corner, move the cursor to define the zoom-to region, then click again to select and zoom the display. The final zoomed area is selected so that the full selected region can be observed, while still maintaining the correct aspect ratio in X and Y.

image\ebx_-744402158.jpg Zoom out by a factor of 2

Clicking on this button increases the area seen in the display window by a factor of two.

image\ebx_681453910.jpg Display all holes

Use this button to reset the displayed area to encompass all data selected for display. If a subset of the holes are selected, and if the Display option above is set to "Selected Holes", then the display will zoom to show only those holes; however, if the Display option is set to "All holes", then the display will zoom to show all the holes.

Pan

Use this button to move around the plan view window. Click the left mouse button and while holding the button down, move the hand cursor to pan.

  • You can also access this command by using the Spacebar shortcut key. Right-click to exit pan mode.

Selection Tools

Select All

Click Select All to select all holes in the current project.

Select None

Click Select None to deselect all holes in the current project.

Section Mode

Select

Select the Select radio button to select holes using the Hole Selection Tools

Deselect

Select the Deselect radio button to deselect holes using the Hole Selection Tools

Hole Selection Tools

image\ebx_1892635845.jpg Single Holes

Click to select/deselect single holes from the plan view window. Note that, holes within 3 pixels of the selected point will be selected.

image\ebx_95446700.jpg Rectangle Tool

Click to select/deselect holes, in the plan view window, using rectangle tool.

image\ebx_1208494488.jpg Polygon Tool

Click to select/deselect holes, in the plan view window, using polygon tool.