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plotting - How to place more than one ChartLabel in a BarChart


I have the following data:


data = {{493, 416}, {1330, 1586, 1579, 1424, 1667, 1023, 665}, {1963, 
    428, 1797, 1832, 1697, 549, 526}, {1742, 2040, 1767, 1876, 1680, 

    668, 531}, {1751, 1565, 1577, 1693, 1691, 584, 523}, {1356}};

days = {{Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 
    Friday, Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 
    Friday, Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 
    Friday, Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 
    Friday, Saturday, Sunday}, {Monday}};

daysnum = {{1, 2}, {3, 4, 5, 6, 7, 8, 9}, {10, 11, 12, 13, 14, 15, 
    16}, {17, 18, 19, 20, 21, 22, 23}, {24, 25, 26, 27, 28, 29, 

    30}, {31}};

I want to plot a BarChart and to use more than one ChartLabel. I have created a handmade picture so that you can know what I mean.


enter image description here


How can I create a ChartLabel at the x-axis and at the center and the top of the BarChart?
Is it possible to color a ChartLabel according to the Bars colors?



Answer



The problem with the following is that you are loosing the depth of the initial list data since I only found a way to do it thanks to Flatten.


data = {{493, 416}, {1330, 1586, 1579, 1424, 1667, 1023, 665}, {1963, 
    428, 1797, 1832, 1697, 549, 526}, {1742, 2040, 1767, 1876, 1680, 

    668, 531}, {1751, 1565, 1577, 1693, 1691, 584, 523}, {1356}};

(* version 8 *)
col = Cases[BarChart@data, RGBColor[__], Infinity][[2 ;;]];
(* version 9 *)
(* col = Cases[BarChart@data, RGBColor[__], Infinity]; *)

days = {{Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 
    Friday, Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 
    Friday, Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 

    Friday, Saturday, Sunday}, {Monday, Tuesday, Wednesday, Thursday, 
    Friday, Saturday, Sunday}, {Monday}};
days = ToString /@ days[[#]] & /@ Range@Length@days;
days = Style[#, #2] & @@@ Thread[{Flatten@days, col}];

daysnum = {{1, 2}, {3, 4, 5, 6, 7, 8, 9}, {10, 11, 12, 13, 14, 15, 
    16}, {17, 18, 19, 20, 21, 22, 23}, {24, 25, 26, 27, 28, 29, 
    30}, {31}};
daysnum = ToString /@ daysnum[[#]] & /@ Range@Length@daysnum;


BarChart[Labeled[#, #2, Above] & @@@ 
    Thread[{Flatten[data, 1], Flatten[daysnum, 1]}],
  ChartLabels -> {Placed[Flatten@days, Axis, Rotate[#, Pi/2] &]}, 
  LabelingFunction -> (Placed[#, Center, Rotate[#, Pi/2] &] &),
  ImageSize -> 500, ChartStyle -> col, BarSpacing -> .2]

Mathematica graphics



About the version issue with col:


In version 8



Cases[BarChart[{{1, 2, 3}}], RGBColor[__], Infinity] // Length


4



while it apparently returns 3 in version 9.


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