GMS:Horizons to Solids: Difference between revisions
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The following steps illustrate how to use the [[GMS:Horizons|Horizons]] method to create solid stratigraphy. | The following steps illustrate how to use the [[GMS:Horizons|Horizons]] method to create solid stratigraphy. | ||
#'''Create/Import Inputs''' – There are | #'''Create/Import Inputs''' – There are three main types of inputs for the horizons method: | ||
##[[GMS:Boreholes|Boreholes]] – Boreholes can be created by importing borehole data by using the [[GMS:File Import Wizard|''File Import Wizard'']], importing sample data after boreholes already exist, or using the borehole tools to manually enter the boreholes. Once a borehole has been created it can be edited in the ''Borehole Editor'' or by using the borehole tools. Also an existing borehole can be copied. Boreholes can be locked to prevent them from being edited. | ##[[GMS:Boreholes|Boreholes]] – Boreholes can be created by importing borehole data by using the [[GMS:File Import Wizard|''File Import Wizard'']], importing sample data after boreholes already exist, or using the borehole tools to manually enter the boreholes. Once a borehole has been created it can be edited in the ''Borehole Editor'' or by using the borehole tools. Also an existing borehole can be copied. Boreholes can be locked to prevent them from being edited. | ||
##[[GMS:TIN Module|TINs]] – TINs can be created 3 different ways in GMS: manually entering the vertex locations and triangulating, converting a different GMS data type to a TIN, and copying a currently existing TIN. (See [[GMS:TIN Module#Creating a TIN|Creating TINs]]) | ##[[GMS:TIN Module|TINs]] – TINs can be created 3 different ways in GMS: manually entering the vertex locations and triangulating, converting a different GMS data type to a TIN, and copying a currently existing TIN. (See [[GMS:TIN Module#Creating a TIN|Creating TINs]]) | ||
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== Horizon → Solid Algorithm == | == Horizon → Solid Algorithm == | ||
When the '''Horizon→Solids''' command is executed the horizons specified on the borehole contacts or TIN nodes are converted to a set of scatter points with one dataset for each horizon. The scatter points are then used to interpolate a surface for each horizon. Starting with the lowest numbered horizon, the surface is extruded down to create a solid. The surface corresponding to the next horizon is then extruded down to fill in the space between that surface and the previous surface. This process is repeated for each surface. At each step, a solid is created for the current horizon and all previously defined solids are subtracted from that solid, resulting in an incremental buildup of the stratigraphy from the bottom to the top. The entire process is simpler, more intuitive, and more robust than the old set operations approach. | When the '''Horizon→Solids''' command is executed the horizons specified on the borehole contacts or TIN nodes are converted to a set of scatter points with one dataset for each horizon. The scatter points are then used to interpolate a surface for each horizon. Starting with the lowest numbered horizon, the surface is extruded down to create a solid. The surface corresponding to the next horizon is then extruded down to fill in the space between that surface and the previous surface. This process is repeated for each surface. At each step, a solid is created for the current horizon and all previously defined solids are subtracted from that solid, resulting in an incremental buildup of the stratigraphy from the bottom to the top. The entire process is simpler, more intuitive, and more robust than the old set operations approach. | ||
<gallery widths="325 px" heights="250 px"> | |||
Image:samp_solids.png|Solids created from the horizons method | |||
Image:samp_xsect.png|Cross sections from the solid created via the horizons method | |||
</gallery> | |||
{{Navbox GMS}} | {{Navbox GMS}} | ||
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[[Category:Stratigraphy]] | [[Category:Stratigraphy]] | ||
[[Category:Horizons|Sol]] | [[Category:Horizons|Sol]] | ||
[[Category:Gallery]] | |||
