Re: y-axis direction
- To: mathgroup at smc.vnet.net
- Subject: [mg116530] Re: y-axis direction
- From: telefunkenvf14 <rgorka at gmail.com>
- Date: Fri, 18 Feb 2011 04:36:18 -0500 (EST)
- References: <ijisli$27u$1@smc.vnet.net>
On Feb 17, 4:18 am, "Rob Y. H. Chai" <yhc... at ucdavis.edu> wrote: > Hi all, > > In the Plot command, the convention for y-axis is up for positive values. Is > there an easy way to reverse the y-axis direction i.e. pointing down for > increasing positive y values? Thanks. > > Rob Chai I have encountered the same problem... economists like to graph inverse demand and supply equations (i.e., price(quantity)) rather than the true relationship of quantity(price). Possible ways around this: (1) solving for the inverse relationship and then using Plot[] (one could also use InverseFunction[] ---- not always straightforward as your function may not be clearly invertible w/o providing assumptions on parameters) (2) using ContourPlot[], which incorporates the functionality of the legacy function ImplicitPlot (you can still use ImplicitPlot; search documentation for details) For the most part, I've settled on (1). -RG