How do I make shaded error bar area instead of lines?

I have data as a neuronal response function listed as my first line of code which is the curve I get. I am trying to add shaded error bars that look similar to this:

My code is:

load('0_RF_PSD95-3_20111121-3.CNG.swc_Trials_120_length_2000_p_0.995_a_0.8_beta_0.6.mat')
SDdiff = std(diff(sort(Fsoma)));
figure; errorbar(h(2:end), diff(mean(Fsoma/500)), ...
    SDdiff(2:end)/500);
set(gca, 'XScale', 'log')

and my current figure/output is:

Does anyone know how to help me achieve something similar to the first figure? Thank you in advance.

[Dyuman Joshi]

One way to achieve this to have more number of data points for a range (to make it dense) and remove the error bar cap

x1 = 0:0.1:10;
numel(x1)

ans = 101

curves(x1)

x2 = 0:0.01:10;
numel(x2)

ans = 1001

curves(x2)

function curves(x)
figure
y = sin(x);

err = 0.1*abs(y)+0.1;

e = errorbar(x,y,err);

%Change the cap size to 0 to remove the cap on error bars
e.CapSize = 0;

hold on

%Add the original plot
plot(x,y,'k-');
end

[Adam Danz]

There's a well-supported function on the File Exchange that adds shaded error regions.

shadedErrorBar by @Rob Campbell

Answer 1

[Star Strider]

It would help to have your data.

Perhaps something like this —

x = logspace(-10, 5, 150).';                                        % Assume Column Variables
y = sin(2*pi*x/1E4)*0.1 + 0.5;
err = 0.01+rand(size(x))*0.05;

figure
errorbar(x, y, err)
set(gca, 'XScale', 'log')

figure
plot(x, y)
hold on
patch([x; flip(x)], [y-err; flip(y+err)], 'b', 'FaceAlpha',0.25, 'EdgeColor','none')
hold off
set(gca, 'XScale', 'log')

.

[Jric]

Thanks! I am unable to get the last figure.

This is my code and figure from it:

x=h;
y=mean(Fsoma)/500;
err=std(Fsoma); %this is the error
figure
errorbar(x, y, err)
set(gca, 'XScale', 'log')
hold on;
plot(x, y)
hold on
patch([x; flip(x)], [y-err; flip(y+err)], 'b', 'FaceAlpha',0.25, 'EdgeColor','none')
hold off
set(gca, 'XScale', 'log')

[Dyuman Joshi]

You need to provide the data for variables h and Fsoma, so that we can run your code and see what the problem is.

[Star Strider]

First, what @Dyuman Joshi wrote!

Second, I assumed column vectors in my example code (because most are). However if you are using row vectors, the patch call changes to:

patch([x flip(x)], [y-err flip(y+err)], 'b', 'FaceAlpha',0.25, 'EdgeColor','none')

.

[Jeffrey Warner]

Thanks a bunch. I was looking for a way to achieve this, i.e. shade the region between the error bars. This worked for my application.

[Star Strider]

@Jeffrey Warner —

My pleasure!

A Vote would be appreciated!

[Jazmin Ley]

This function works great:

https://www.mathworks.com/matlabcentral/fileexchange/26311-raacampbell-shadederrorbar