Numerical values to World Stress Map Quality Ranking

Assigns numeric values of the precision (sd.) of each measurement to the categorical quality ranking of the World Stress Map (A, B, C, D, E, X).

Usage

parse_wsm_quality(x)

quantise_wsm_quality(x)

Arguments

x

Either a string or a character/factor vector of WSM quality ranking

Value

"numeric". the standard deviation of stress azimuth

References

Heidbach, O., Barth, A., M<U+00FC>ller, B., Reinecker, J., Stephansson, O., Tingay, M., Zang, A. (2016). WSM quality ranking scheme, database description and analysis guidelines for stress indicator. World Stress Map Technical Report 16-01, GFZ German Research Centre for Geosciences. doi:10.2312/wsm.2016.001

Examples

parse_wsm_quality(c("A", "B", "C", "D", NA, "E", "X"))
#>    A    B    C    D <NA>    E    X 
#>   15   20   25   40   NA   90  180 
data("san_andreas")
head(parse_wsm_quality(san_andreas$quality))
#>  C  C  C  C  C  C 
#> 25 25 25 25 25 25