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retrieve the geomaterials that match an given optical signs.

Source: R/mindat_geomaterials.R
geomaterials_opticalsign.Rd

: Queries the geomaterials match an given optical signs.

Usage

geomaterials_opticalsign(signs, ...)

Arguments

signs

list of the signs(string or null). sign for uniaxial and biaxial minerals: +;-;+/- .Please refer to the details.

...,

Further named parameters.Other optional arguments.

Value

df, a data frame of geomaterials

Details

This function releated to the field "opticalsign" of geomaterials. Optical sign: single choice (Enum): "+", "+/-", "-"

Examples

if (FALSE) { # \dontrun{
df <-geomaterials_opticalsign("-")
} # }