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: Queries the geomaterials within or without the ima.
geomaterials_ima(btrue,...)
df, a data frame of geomaterials
boolean value.TRUE IMA approved, otherwise not approved.
Further named parameters.Other optional arguments.
This function releated to the field "ima" of geomaterials. retrieve all the geomaterials that are approved by the IMA or not.
if (FALSE) { df <-geomaterials_ima(TRUE) }
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