Triplot Analysis
The Triplot tool is similar to the Scatter Plot Tool, but plots a ternary plot using three channels. The values for any point are summed, and then normalized to give fractions from 0 to 100 percent. Each corner of the triangle represents 100 percent for one of the channels, and at any point in the plot the sum of all three components sums to 100.
The tool implements dynamic linking between itself and the current database, and through it with any other Triplot or Scatter plot tool open in the project.
A ‘mask’ channel can be used for selecting a subset of data values from the database. When a mask channel is selected, it will be used and updated by the dialog as selections are plotted. A data value is highlighted in red if its corresponding mask value is not a "dummy" value.
You can also categorize the Triplot data with the colour based on a Classification channel.
The Triplot Template (and/or Overlay file) is used to store specific configurations of the triplot tool. Each Template consists of three files:
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The Template file, which is a text file that contains information on the channels, scales, titles, etc., as well as the name of the associated overlay file.
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The Overlay file is a text file that contains either (i) line/text commands to draw an overlay or (ii) the name of a map file to use as the overlay. In this case, it refers to a map file.
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The Map file, which is a Geosoft map containing the overlay map items.
These files are stored in the "…/Oasis montaj/etc" directory. New or modified Templates and Overlays are stored in the "…Oasis montaj/users/etc" directory.
Once the Triplot tool has been created, it is stored as Tools (Geostats/ Geochemistry) in the Project Explorer (on the Tools tab). The Tools (Geostats/ Geochemistry) can be hidden/displayed as necessary (right-click on the tool in the Project Explorer and select ‘Hide’ or ‘Show’ from the popup menu). TheTools (Geostats/ Geochemistry) are saved in the project when you close Oasis montaj and will be available automatically, with the same settings, the next time the project is opened.
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