The 2d histogram section should link to the 1d histogram chapter (Visualizing Distributions I).
The contour lines section could do with better examples. The blue jay dataset will work better.
The discussion about trend lines should be linked to the yet-to-be-written chapter about visualizing trends.
Add one example of many contour lines in different colors showing different subsets, labeled "bad": When there are too many different subsets, the resulting figure becomes undecipherable.
This chapter needs some revisions:
The 2d histogram section should link to the 1d histogram chapter (Visualizing Distributions I).
The contour lines section could do with better examples. The blue jay dataset will work better.
The discussion about trend lines should be linked to the yet-to-be-written chapter about visualizing trends.
Add one example of many contour lines in different colors showing different subsets, labeled "bad": When there are too many different subsets, the resulting figure becomes undecipherable.