Re: Plotting: how does one reverse the time axis tick mark values?

*To*: mathgroup at smc.vnet.net*Subject*: [mg127352] Re: Plotting: how does one reverse the time axis tick mark values?*From*: Bob Hanlon <hanlonr357 at gmail.com>*Date*: Thu, 19 Jul 2012 03:52:40 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net*References*: <20120718053631.A933A6828@smc.vnet.net>

Show[plt = ListPlot[ Transpose[{Range[6], Range[6]}]], Ticks -> { (Ticks /. AbsoluteOptions[plt, Ticks])[[1]] /. {x_, lbl_?NumericQ, r__} -> {x, 6 - lbl, r}, Automatic}] Bob Hanlon On Wed, Jul 18, 2012 at 1:36 AM, James Stein <james at stein.org> wrote: > I thought this would be simple, but I am stumped: I wish to display > values (on the y axis) for specific times (on the x-axis). > Conventionally, time on charts progresses from left to right, and this > is my desire. However, I want the ticks along the time axis to be > measured in what one might call "countDown units" or "reverse units", > for example "Myr before Present" or "Seconds before Midnight" or > "Centuries B.C.". > > As a simple example, consider the result of > ListPlot [ Transpose [ { Range [ 6 ] , Range [ 6 ] } ] ] > which displays the values 2, 3, 4, 5, 6 along the x axis. > My problem is how to construct this same chart, except with values 4, > 3, 2, 1, 0 replacing 2, 3, 4, 5, 6. > The various ways I tried to do this also mirror-reflect the plotted y-values. > I looked for an option called something akin to > 'TickMarkLabelFunction', but couldn't find one. >

**References**:**Plotting: how does one reverse the time axis tick mark values?***From:*James Stein <james@stein.org>