How can I show % values on the y axis of a plot?

问题:

In any Mathematica chart or plot how can I show % values on the y axis?

I may have data like this:

data = {{{2010, 8, 3}, 0.}, {{2010, 8, 31}, -0.052208}, {{2010, 9, 30}, 
  0.008221}, {{2010, 10, 29}, 0.133203}, {{2010, 11, 30}, 
  0.044557}, {{2010, 12, 31}, 0.164891}, {{2011, 1, 31}, 
  0.055141}, {{2011, 2, 28}, 0.114801}, {{2011, 3, 31}, 
  0.170501}, {{2011, 4, 29}, 0.347566}, {{2011, 5, 31}, 
  0.461358}, {{2011, 6, 30}, 0.244649}, {{2011, 7, 29}, 
  0.41939}, {{2011, 8, 31}, 0.589874}, {{2011, 9, 30}, 
  0.444151}, {{2011, 10, 31}, 0.549095}, {{2011, 11, 30}, 0.539669}};

DateListPlot@data

I just want the y axis to range from 0% to 60% instead of 0.0 to 0.6.

回答1:

Use FrameTicks -> {{left, right},{bottom, up}}

DateListPlot[data, 
             FrameTicks -> {{{{0.0, "0%"}, {0.1, "10%"}, {0.2, "20%"}, 
                              {0.3, "30%"}, {0.4, "40%"}, {0.5, "50%"}, 
                              {0.6, "60%"}}, None}, 
                            {Automatic, None}}]

The table for FrameTicks can be generated, e.g.,

Table[{k/10., ToString@(10 k) <> "%"}, {k, 6}]
(* Out[10] := {{0.1, "10%"}, {0.2, "20%"}, {0.3, "30%"}, {0.4, "40%"}, {0.5, "50%"}, {0.6, "60%"}} *)

If you need to make a lot of figures there is LevelScheme, a free package that makes producing good plots in Mathematica much easier, especially when it comes to tick marks.

EDIT: As per Jagra's suggestion here is a function that makes a tick specification list based on the data set and with desired tick steps. Assumptions are that the data structure is the always the same.

ticks[step_, data_] := {{Table[{k, ToString@IntegerPart@(100 k) <> "%"}, 
                               {k, 
                                Floor[Min@data[[All, 2]], step],
                                Ceiling[Max@data[[All, 2]], step], 
                                step}], None}, 
                         {Automatic, None}}; 

Now you can define a plotting function

plot = DateListPlot[#, FrameTicks -> ticks[.1, #]] &

and use it like this plot@data

Finally, since your question specifies any Mathematica plot, remember that FrameTicks works only on framed plots, for other plots use Ticks -> {{x ticks},{y ticks}}.

回答2:

You could try fiddling with FrameTicks:

回答3:

Assuming your y-axis values are given as ratios and you want them as percentages, the simplest solution is:

DateListPlot[{#1, 100 #2} & @@@ data]

回答4:

I do not see the graphics options, such a possibility, but you can create an intermediate function that will convert your number to the right. You're going to display the graph of this function. This can be done easily. Good luck!