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How can I change the color of the slices in my pie chart?

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Rookie Programmer
Rookie Programmer am 12 Jul. 2023
Kommentiert: Voss am 12 Jul. 2023
How can I change the color of the slices in the pie chart?
*R_Pie(1).FaceColor = 'g' will change the color of the first slice but when running the line below it I get the error: " Unrecognized property 'FaceColor' for class 'matlab.graphics.primitive.Text' "
An example of my attempt is below.
TT = 10
RT = 25
TN = 2
RN = 3
R = [RT , RN]
T = [TT , TN]
subplot(2,2,1)
R_Pie = pie(R)
R_Pie(1).FaceColor = 'g'
R_Pie(2).FaceColor = 'r'
subplot(2,2,2)
T_Pie = pie(T)
T_Pie(1).FaceColor = 'g'
T_Pie(2).FaceColor = 'r'

Akzeptierte Antwort

Voss
Voss am 12 Jul. 2023
TT = 10;
RT = 25;
TN = 2;
RN = 3;
R = [RT , RN];
T = [TT , TN];
subplot(2,2,1)
R_Pie = pie(R)
R_Pie =
1×4 graphics array: Patch Text Patch Text
Notice the elements of R_Pie alternate Patch, Text, Patch, Text, ... Therefore, the second slice is the third element of R_Pie.
R_Pie(1).FaceColor = 'g';
R_Pie(3).FaceColor = 'r';
subplot(2,2,2)
T_Pie = pie(T)
T_Pie =
1×4 graphics array: Patch Text Patch Text
T_Pie(1).FaceColor = 'g';
T_Pie(3).FaceColor = 'r';
  2 Kommentare
Rookie Programmer
Rookie Programmer am 12 Jul. 2023
Bearbeitet: Rookie Programmer am 12 Jul. 2023
I have one more question:
I am trying to display the values of RT and RN above the percentage of each slice or in the legend.
How can I accomplish this?
The code below is attempting to display them above the percentage of each slice..., I get a box next to the percentage value.
Rtext = findobj(R_Pie, 'Type', 'text');
RpercentageValues = get(Rtext, 'String');
Rtxt = {[RT],[RN]}';
combindedtxt = vertcat(Rtxt,RpercentageValues);
Rtext(1).String = combindedtxt(1)
Rtext(2).String = combindedtxt(2)
The code below is attempting to sign the values in the legend
RLegend = {'RT:'[RT],'RN:'[RN]}
TLegend = {'TT:'[TT],'TN:'[TN]}
Voss
Voss am 12 Jul. 2023
Something like this?
TT = 10;
RT = 25;
TN = 2;
RN = 3;
R = [RT , RN];
T = [TT , TN];
subplot(2,2,1)
R_Pie = pie(R);
R_Pie(1).FaceColor = 'g';
R_Pie(3).FaceColor = 'r';
R_Pie(2).String = sprintf('RT: %d\n%s',RT,R_Pie(2).String);
R_Pie(4).String = sprintf('RN: %d\n%s',RN,R_Pie(4).String);
subplot(2,2,2)
T_Pie = pie(T);
T_Pie(1).FaceColor = 'g';
T_Pie(3).FaceColor = 'r';
T_Pie(2).String = sprintf('TT: %d\n%s',TT,T_Pie(2).String);
T_Pie(4).String = sprintf('TN: %d\n%s',TN,T_Pie(4).String);

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