How to color individual points on errorbar plot?

Hi,

I want to color the individual points of this errorbar plot. I tried doing it in the following way but it doesn't work.

means=[1 1 2 3 4];
standarddeviation=[0.1 0.2 0.2 0.3 0.35];
color=['b' 'm' 'b' 'm' 'b'];
 errorbar(means, standarddeviation,'.','MarkerEdgeColor', color,'MarkerSize',20),;

I also tried plotting it in a for loop but that doesn't work at all.

means=[1 1 2 3 4];
standarddeviation=[0.1 0.2 0.2 0.3 0.35];
color=['m','m','k','g','r'];
for i = 1:numel(means)
 errorbar(means(i), standarddeviation(i),'.'),'MarkerEdgeColor', color(i),;
 hold on
end

Can someone help me fix this?

Answer 1

[Star Strider]

You need to plot with respect to an independent variable.

Try this:

means=[1 1 2 3 4];
standarddeviation=[0.1 0.2 0.2 0.3 0.35];
color=['m','m','k','g','r'];

figure
hold on
for i = 1:numel(means)
 errorbar(i, means(i), standarddeviation(i),'.','MarkerEdgeColor', color(i))
end
hold off
xlim([0 6])

I chose the loop index ‘i’ for the independent variable here.

.

[Nehal Trivedi]

Hello @Star Strider. I wanted to change the colour of the errorbar meaning I want the vertical lines in red colour and the plot in blue colour. I have written a code for it but not able to generate it. I am generating the data from excel. How can it be done?

clc
clear all

load('Calibration.mat')
Height= WorkoutData.TankHeightcm;
Voltage= WorkoutData.Average;
err= WorkoutData.StandardDeviation;
figure(1)
errorbar(Voltage,Height,err)
grid on
xlabel('Sensor reading [V]');
ylabel('Tank height [cm]');
legend('Tank 1','FontSize',8, 'Location','northeast');

[Nehal Trivedi]

I have generated this plot in Origin Pro. I wanted to generate in similar way.

[Star Strider]

The only way I can think of to do that is to plot the line first and then the errorbars (although it is possible to do that in reverse, depending on wwhat you want) —

x = 0:10:90;
y = linspace(1, 9, 10);
err = ones(size(x));

figure
plot(x, y, '-sb', 'MarkerFaceColor','b', 'MarkerEdgeColor','b')
hold on
errorbar(x, y, err, '.r', 'MarkerSize',1);
hold off
grid
axis([-10 100    -1  11])

In order to plot the errorbars without the connecting line, plot them using a marker. Here I chose a red dot, with the dot vanishingly small.

.