When I have many plots in a document I usually lose a lot of time to individually set width and height of each pictures to make them appear right within the document. Additionally complicating the matter is that some figure is produced in
R adding other variables to each final-size equation, but also that figures can't be simply of strictly the same size since (of course) content must always influence the aspect ratio (e.g. time-series could require a 1/3 height/width ratio while a simple bar chart might only require something close to 1/1).
According to Edward Tufte "[g]raphics should tend toward the horizontal" (Tufte, E. R. (2001). The visual display of quantitative information. P. 186). I agree. Tufte also proposes two ratios: the Golden rectangle--1/1.618 (the same used in Grecian temples)--or a simpler 1/1.5.
I know this could sound as a vague question but I wonder if someone has successfully experimented in this sense with any technique to consistently render figures across a LaTeX document (maybe by setting in the preamble base-line values as variable to be used across the document--still allowing locally for minor tweaks).