Collar(table; [holeid], [x], [y], [z])

Collar table and its main column fields.

Interval(table; [holeid], [from], [to])

Interval table and its main column fields.

MiningTable

A table from the mining industry (e.g. survey, collar, interval).

Survey(table; [holeid], [at], [azm], [dip])

Survey table and its main columns fields.

composite(itable, len)

Composite interval table itable to a given length len.

References

• Abzalov, M. 2018. Applied Mining Geology

desurvey(collar, survey, intervals;
         step=:arc, indip=:auto, outdip=:down,
         len=nothing, geom=:point, radius=1.0)

Desurvey drill holes based on collar, survey and intervals tables. Optionally, specify a step method, an input dip angle convention indip and an output dip angle convention outdip.

The option len can be used to composite samples to a given length, and the option geom can be used to specify the geometry of each sample.

In the case of :cylinder geometry, the option radius can be used to specify the radius of each cylinder.

Step methods

• :arc - spherical arc step
• :tan - simple tanget step

See https://help.seequent.com/Geo/2.1/en-GB/Content/drillholes/desurveying.htm

Dip conventions

Input dip angle

• :auto - most frequent dip sign points downwards
• :down - positive dip points downwards
• :up - positive dip points upwards

Output dip angle

• :down - positive dip points downwards
• :up - positive dip points upwards

Output geometries

• :cylinder - geospatial data with cylinders
• :point - geospatial data with points
• :none - data frame with usual columns

required(table)

Return the required columns of mining table.

selection(table)

Return the subtable of mining table with required columns.