Comparison of GiA Roots estimation of trait values against a prior benchmark. The two plots represent a comparison of GiA Roots estimation of trait values compared against a previously validated set of algorithms . Each point represents a trait estimate from one of 2393 images. Note that the median number of roots is defined to be an integer so nearly all comparisons in the left panel exactly coincide, but when plotted they appear to give rise to a ‘gridded’ pattern. The R2values confirm the strong correspondence of the two implementations of the same trait.