plot bar with two colors
显示 更早的评论
hello,
i want to plot my bar in two colors conditions.if Tr<0 the color is red else the color is green. Ihqve tryed this but it didn't works.
can you help me please
T=readtable('file.xlsx');
A=T{:,:};
Tr=A(:,1);
EPR=A(:,2);
for i=1:length(A)
h=bar(Tr,EPR)
hold on
if (Tr<0)
barcolor='r';
else
barcolor='g'
end
end
采纳的回答
Andy
2020-10-22
figure();
hold on
for i=1:length(A)
if (Tr(i)<0)
h=bar(Tr(i),EPR(i),'r');
else
h=bar(Tr(i),EPR(i),'g');
end
end
hold off
1 个评论
Rik
2020-10-22
Just a note: it is bad design to use length for matrices. It is also probably not a good idea to create many bar objects, as that many graphics objects may cause performance issues.
更多回答（1 个）
If you insist on separate bar objects you can use the first part, if not, you can use the second part
figure(2),clf(2)%ensure a clean figure for this example
A=rand(10,2)*5-2.5;%generate random data
Tr=A(:,1);
EPR=A(:,2);
subplot(1,2,1)
%for i=1:length(A)
for n=1:size(A,1)% or since R2020b: n=1:height(A)
width=0.05;
h=bar(Tr(n),EPR(n),width);
hold on
if (Tr(n)<0)
h.FaceColor='r';
else
h.FaceColor='g';
end
end
subplot(1,2,2)
L=Tr<0;
EPR_part=EPR;EPR_part(~L)=NaN;% this step is only require to make the bars the same width
bar(Tr,EPR_part,'r'),hold on
EPR_part=EPR;EPR_part( L)=NaN;
bar(Tr,EPR_part,'g'),hold off
4 个评论
bekka mohamed
2020-10-22
Rik
2020-10-22
Did you run my code with the generated random data, or with only your own data? This code does what you describe when I run it on R2020b. What release are you using?
bekka mohamed
2020-10-22
bekka mohamed
2020-10-22
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