pgfplots

• How to Add a Vertical Line to a TikZ Plot
  Add a vertical line to a PGFPlots graph with a two-point coordinate plot, or draw it in axis coordinates for precise placement.
• Why Does a PGFPlots Cycle List Produce No Colors?
  Define each PGFPlots cycle-list entry as a plot style, select the list by name, and use \addplot+ to preserve its colors when adding options.
• How to Set Line Colors in PGFPlots
  Set one PGFPlots line with a draw color, or define a cycle list to assign repeatable colors and styles to multiple plotted series.
• How to Position Tick Scale Labels in pgfplots
  Position pgfplots’ tick scale multiplier with the x or y tick scale label style key, or move individual tick numbers with xticklabel pos and yticklabel pos.
• How to Set a Colormap for Bars in PGFPlots
  A PGFPlots colormap does not automatically recolor every bar in one ybar plot. Split bars into plots for distinct colors, or set one fill explicitly.
• How to Fill the Region Between Two Lines in TikZ
  Use PGFPlots’ fillbetween library to shade the area between named plot paths, with a complete example and notes on domains and intersections.