get_stats_df.RdWrapper function to calculate terrain analysis statistics for a RasterStack
get_stats_df( fun, fun_name, ls, dem_file, lines = NULL, stat = c(median, mean, min, max, sd, e1071::skewness), stat_name = c("median", "mean", "min", "max", "sd", "skew") )
| fun | either   | 
    
|---|---|
| fun_name | a character string specifying the name of the function in the column of the resulting   | 
    
| ls | a RasterStack of terrain analysis rasters  | 
    
| dem_file | character, DEM filename (used for fixing names)  | 
    
| lines | a SpatialLinesDataFrame  | 
    
| stat | functions, list of statistics to derive  | 
    
| stat_name | character, labels corresponding to   | 
    
a data.frame with the values for the requested terrain analysis distribution metrics