This function generates a greyscale or rainbow coloured generative art ggplot object shaped like a vortex.
     
    
    Usage
    vortex(n = 25, start_val = 90, col_scheme = "mono", bg_col = "black", s = 1234)
 
     
    
    Arguments
- n
 
Number of points. Default 25.
 
- start_val
 
Starting position for polar coordinates. Default 90.
 
- col_scheme
 
Colour scheme of art. One of c("mono", "rainbow). Default 0.1.
 
- bg_col
 
Background colour. Default "black".
 
- s
 
Seed value. Default 1234.
 
 
    
    
    Examples
    vortex()