retrieve the geomaterials whose hardness are lower than an given value.

: Queries the list of geomaterials that have lower hardness than an given vlaue(hmax).

Usage

geomaterials_hardness_lt(hmax, ...)

Arguments

hmax

float value of the Mohs scale of mineral hardness, which ranging from 0 to 10.

...,

Further named parameters.Other optional arguments.

Value

df, a data frame of geomaterials

Details

This function releated to the field "hardness_max" of geomaterials. retrieve all the geomaterials that has lower hardness than an given value(hmax). hamx: maximum Moh's hardness

Examples

if (FALSE) { # \dontrun{
df <-geomaterials_hardness_lt(2)
} # }