Re: change the base of the Log[] used by LogLogPlot?

*To*: mathgroup at smc.vnet.net*Subject*: [mg112945] Re: change the base of the Log[] used by LogLogPlot?*From*: Brett Champion <brettc at wolfram.com>*Date*: Thu, 7 Oct 2010 03:36:30 -0400 (EDT)

On Oct 6, 2010, at 11:07 AM, Nasser M. Abbasi wrote: > On 10/6/2010 8:29 AM, Brett Champion wrote: >> On Oct 6, 2010, at 2:15 AM, Nasser M. Abbasi wrote: >> >>> Mathematica experts: >>> >>> I want to use LogLogPlot, say as in LogLogPlot[x,{x,.1,1}], but I >>> want >>> the Log to be in base 10, not in base e as the default used. >>> >>> Looking at the doc, I can't see it. No option to change the base. >>> >>> I can ofcourse build my own data, and use ListPlot, but LogLogPlot >>> handles the ticks better automatically and it samples better. Same >>> question applies for LogPlot, LogLinearPlot, ListLogPlot, >>> ListLogLinearPlot, etc... >>> >>> I am sure this is hidden somewhere in the documentation :) >>> >> > >> Nope. LogPlot uses Log. >> >> I'm curious as to why you want to switch to Log10 since the plot >> would >> end up looking exactly the same. >> > > > But not if x is linear and y is log, then the plot are not the same: > > ----loglinear------- > x = {1, 2, 3, 4}; > data1 = Table[{x, Log[10, x]}, {x, 1, 10}]; > data2 = Table[{x, Log[x]}, {x, 1, 10}]; > Show[{ListPlot[data1, PlotStyle -> Red, Joined -> True], > ListPlot[data2, Joined -> True]}] > --------------------- > > any way, not too important, just was wondering ;) My point is that these look the same: {ListPlot[data1, PlotStyle -> Red, Joined -> True], ListPlot[data2, Joined -> True]} (ignoring the ticks which get adjusted anyway.) Brett Champion Wolfram Research