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: Queries the list of geomaterials that match an given groupid.
geomaterials_by_groupid(gid,...)
df, a data frame of geomaterials
integer value. The id of the group to which this mineral belongs
Further named parameters.Other optional arguments.
This function releated to the field "groupid" of geomaterials. retrieve all the geomaterials that match an given groupid.
if (FALSE) { df <-geomaterials_by_groupid(0) }
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