geomaterials_optical2v_range {OpenMindat}

retrieve the geomaterials that has the given range of optical 2v.

Description

: Queries the geomaterials have the higher optical 2v value than the given lt.

Usage

geomaterials_optical2v_range(gt,lt,...)

Arguments

gt

given value of minimum of optical 2v of mineral.Please refer to the details.

lt

an given value of maximum of optical 2v of mineral.Please refer to the details.

...

Further named parameters.Other optional arguments.

Details

This function releated to the field "optical2v_min" and "optical2v_max" of geomaterials. optical2vcalc:The calculated 2V angle minimum or average of biaxial minerals optical2vcalc2:The calculated 2V angle maximum of biaxial minerals optical2vmeasured:The measured 2V angle minimum or average of biaxial minerals optical2vmeasured2:The measured 2V angle maximum of biaxial minerals

Value

df, a data frame of geomaterials

Examples

## Not run: 
df <-geomaterials_optical2v_range(0.1,0.2)

## End(Not run)