Plotting a function -

*To*: mathgroup at smc.vnet.net*Subject*: [mg71642] Plotting a function -*From*: Craig Reed <tharkun860 at publicspam.com>*Date*: Sat, 25 Nov 2006 05:37:25 -0500 (EST)

Hi - I'm trying to get Mathematica 5.2 to graph a function which is the ratio of integers which have a '3' in them. Done in Exce3l, the graph of the first 32,000 data points has a fractal look to it, especially when done with a log scale. What I've tried is the following f[x_] := Boole[DigitCount[x, 10, 3]] g[x_] := Sum[f, {i, x}]/x Plot[g, {x, 1, 100}] I get 3 errors of "g is not a michine-size real number at" followed by 3 real numbers: 1.000004125 5.016125..... 9.39607..... What am I doing wrong? or perhaps what I should ask is, "Is there a better way?"