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tikz.dev / PGFplots Manual

Manual for Package pgfplots
2D/3D Plots in LA, Version 1.18.1
http://sourceforge.net/projects/pgfplots

Utilities and Basic Level Commands

9.5Accessing Axis Limits

It is also possible to access axis limits during the visualization phase, i.e. during \end{axis}. Please refer to the reference documentation for xmin on page (??).