Re: Plot Axis Unit Conversions

*To*: mathgroup at smc.vnet.net*Subject*: [mg98883] Re: [mg98820] Plot Axis Unit Conversions*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Mon, 20 Apr 2009 19:13:47 -0400 (EDT)*Reply-to*: hanlonr at cox.net

Plot[x, {x, 0, 0.1}, Frame -> True, FrameLabel -> {"chord length (m)", "flutter speed (m/s)", "chord length (in)", None}, FrameTicks -> {Automatic, Automatic, Join[Table[{254 n/10000, n, {0.016, 0.}, {GrayLevel[0.], AbsoluteThickness[0.25]}}, {i, 0, n}], Table[{254 n/100000, , {0.01375, 0.}, {GrayLevel[0.], AbsoluteThickness[0.125]}}, {n, 0, 40, 5}], Table[{254 n/100000, , {0.008, 0.}, {GrayLevel[0.], AbsoluteThickness[0.125]}}, {n, 0, 40}]], Automatic}, Axes -> False] Bob Hanlon ---- unknownowen at gmail.com wrote: ============= Hello everyone, I am working on a notebook involving a flutter analysis of a flat plate in a wind tunnel. All of the equations involve metric units, but most of the physical measurements of size I have are in inches. In order to maintain a consistent system of units, I would like to plot the axis units in metric and English units. Specifically, I have a plot for the critical flutter speed in units of m/s versus the chord length in meters, and I want to overlay an x-axis, possibly on the top, that will display the equivalent length in inches (i.e, xinches=x*10000/254) without messing up the graph. At the very least, I would like to display it in centimeters instead of meters for better clarity. I do NOT want to recalculate the function using inches - just display the conversion. It would be nice if I could display it in both inches and centimeters at the same time. This is an absolute breeze to do in another system, but I haven't been able to find anything specifically dealing with scaling of axes for Mathematica. Anyone have any ideas? Thanks very kindly!