On Thu, Nov 3, 2011 at 6:16 PM, Ernesto Posse <[email protected]> wrote: >> Is there some way of drawing in a LyX document a chain rule diagram? >> Please, see an example of what I am wanting at: >> >> http://tutorial.math.lamar.edu/Classes/CalcIII/ChainRule_files/image001.gif > > While there is no direct way of doing that in lyx, there are useful > alternatives. My favourite is the XY-pic package > (http://www.tug.org/applications/Xy-pic/), which is useful for all > kinds of diagrams. > > To use it you need to install XY-pic (the 'xy' latex package), and in > LyX, in the preamble (Documents->Settings->LaTeX preamble) you should > write > > \usepackage[all]{xy} > > \newcommand{\pd}[2]{\frac{\partial #1}{\partial #2}} %this line is > only for your specific diagram > > Then in the body, you create an ERT box (Ctrl-L) and inside you can > put the following: > > \[ > \xymatrix{ > & & & z \ar@{-}[dll]_{\pd{z}{x}} \ar@{-}[drr]^{\pd{z}{y}} & & & \\ > & x \ar@{-}[dl]_{\pd{x}{s}} \ar@{-}[dr]^{\pd{x}{t}} & & & & y > \ar@{-}[dl]_{\pd{y}{s}} \ar@{-}[dr]^{\pd{y}{t}} & \\ > s & & t & & s & & t \\ > } > \] > > A first look at this might seem daunting, but once you read the xy > user's guide it will seem quite straight-forward.
Thanks a lot, Ernesto. That is exactly what I was looking for. Paul
