Display text label on top of grouped bar plots

Question

Frederick Awuah-Gyasi 2022-9-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1798610-display-text-label-on-top-of-grouped-bar-plots

回答： Alan Stevens 2022-9-7

采纳的回答： Alan Stevens

在 MATLAB Online 中打开

Add column E as labels over the bars

Code below: related question

% Set up the problem by recreating the table.
A = [	'0'	'0'	'1'	'1'	'2'	'2'	'3'	'3']'; %%%%%%%%%%%%%%%
B = ['0'	'1'	'0'	'1'	'0'	'1'	'0'	'1']';
C = [2	11	32	33	38	31	47	39]';
D = [0.5	0.7	9.5	3.3	3.8	3.1	4.7	3.9]';
E = ["Q1" "Q2" "Q1" "Q4" "Q1" "Q1" "Q2" "Q1"]';
T = table(A,B,C,D,E);
% use sortrows to organize data in an expected format
T = sortrows(T,["B","A"]);
% extract x values, group names
x = str2num(unique(T.A));    %%%%%%%%%%%%%%%%%
b = unique(T.B);
% Reshape the data based on the number of unique values in A
CC = reshape(T.C,length(x),[]);
DD = reshape(T.D,length(x),[]);
EE = reshape(T.E,length(x),[]);
% plot
hold on
hb = bar(x,CC)
errorbar(x-0.15,CC(:,1),DD(:,1),'o','Color','k') %%%%%%%%%%%%%%
errorbar(x+0.15,CC(:,2),DD(:,2),'o','Color','k') %%%%%%%%%%%%%%
% legend(b)
% xtips2 = hb(2).XEndPoints;
% ytips2 = hb(2).YEndPoints;
% labels2 = string(EE(2).YData);
% 
% text(xtips2,ytips2,labels2,'HorizontalAlignment','center',...
%     'VerticalAlignment','bottom')
barWidth = hb.BarWidth;
numCol = size(CC,1);
cnt = 0;
for ii = EE'
    cnt = cnt + 1;
    xPos = linspace(cnt - barWidth/2, cnt + barWidth / 2, numCol+1);
    idx = 1;
    for jj = xPos(1:end-1)
        val = EE(cnt,idx);
        y = M(cnt,idx);
        text(jj, y + 1, num2str(val));
        idx = idx +1;
    end     
end
hold off