For example, below this Collar table has the optional field ‘hole_type’, which can be used with drillhole constraints to select only the ‘DDH’ holes. This field will serve as a flag, to select holes of different types, categories or areas (e.g. Workflow: Drillhole Constraintsīefore using the drillhole constraint tools, it is recommended the user should first ensure an optional field exists in the collar table (not mandatory). This GEOVIA blog post will now discuss the setup and methodology to utilise this capability.
Consequently DTM files are not valid without the original String files. DTM’s are made of triangles, with each point of each triangle matched to a point in the original String file. This is often an overlooked and forgotten area of the Surpac toolset, but yet can provide value by streamlining workflows. String files contain the raw data, where as DTM files contain a mapping of trios of points in the String file that constitute a triangle. To view or process a select number of holes requires some setup in the collar table and knowledge of Surpac’s Drillhole Constraint functionality. Many users of GEOVIA Surpac struggle with how to effectively select specific drillholes when completing database tasks such as display, compositing or data extraction.