I need to change the size of a PGFPlots tikzpicture in my LaTeX document. There are two different things, scaling the graphic to the full or half width for example and changing the aspect ratio of a graphic.
My main resource to create tikzpicture graphics in PDF files generated via
LaTeX is the
PGFPlots Gallery. But I guess
there are more than 400 examples on this page. Here a minimal example for a
PGFPlots function
visualisation with data loaded from an dat file.