Your Swath Plot data in user-selected format should resemble this: Your Swath Plot in the Basic Statistics Window should look like this:ĩ. The Swath Plot generates two outputs, one as Chart in the Block Model Basic Statistics dialog and another in your preferred format. Constrain by grade >=0 in order to eliminate any negative grades that might exist in the block model.ħ. Lastly, specify the output file which will have the data in a text format or web-based formats. This varies from one deposit to the next. If using the elevation orientation, the minimum and maxium coordinates will be on the Z with the interval being bench height/ half bench. Commonly, users select the direction following the strike of the orebody or use the elevation for a downhole comparison. Under Swath Options, choose the orientation of your chart. This is the label that the chart will show for the estimated grade values. Select the estimated attribute from the dropdown list and type any lable (e.g. You can also choose to constrain the Swath Plot generation with any block model attribute/surfaces/solids. Under Block Model, specify the block model density attribute. CU_Composite) for the Label which will be displayed on the chart for composite values. For example, you may enter “Metal_Composite” (e.g. Under D-Field Parameters, enter the description field of the string file with values to compare with. Below you can see the definition of inputs. Click on Block Model > Geostatistics > Swath Plot. To create the Swath Plot, you will need to access the Swath Plot function. The image below shows the block model (in blue) with block faces switched off as well as the drillhole composite file (in white) opened in the graphics.ĥ. In the screenshot below, the estimated attribute is gold and in the composite file it is saved in the D3field.Ĥ. Open the block model and run the block model summary to identify the attribute whose values have been estimated. In the drillhole composite file, take note of the description field (Surpac D-field) that has the estimated values to be plotted.ģ. In order to generate Swaths, you will need the drillhole composite file and a block model.Ģ.
Here’s how you can generate Swath Plots using elevation ranges in Surpac 6.7.2 and 6.7.3.ġ. This is also one of the requirements of Mineral Resource reports and validation as per international codes for resource validation, for instance, Joint Ore Reserves Committee (JORC). The Swath Plots functionality provides geologists performing geostatistical estimation with greater confidence in their estimation techniques. This refers to a comparison of sample data or drillhole composite data against the estimated values in the block model by generating swaths or slices in the orientation specified by the geologist (Northing, Easting or Elevation).
Resource Geologists can now use Swath Plots in the latest versions of GEOVIA Surpac TM for quality assurance and quality control to support block model validation within their software solution.