Fig. 5
From: Quantile function modeling with application to salinity tolerance analysis of plant data
Relationship between plant traits and stress-weighted performance index (SWP) predicted using bivariate regression: Each of the nine panels represents a scatter plot between a plant trait and SWP in grey dots. The solid black line represents the predicted values of the index using bivariate regression, the dashed black lines are the lower and upper confidence bands, formed using inner and outer envelopes respectively, and superimposed is the median regression line in red