Add a scale bar to my plot

Hello, I was just wondering if there would be any way to replace the axis line for some sort of a scale bar. I am quite convinced there is no built command for this in matlab, so I was wondering how you guys would tweak the plot in order to get this. Just for the sake of illustration, this is what I have:

This is (sort of) what I wanted to obtain:

Thank you in advance for your collaboration!

Answer 1

[Star Strider]

This was an interesting project!

You will probably have to experiment to get exactly the effect you want, but this will get you going:

% Create Data —
t = linspace(10,34);           % ‘t’ (ms)
y = [20+5*sin(2*pi*3*t/24)+2*randn(1,100);  60+5*cos(2*pi*3*t/24)+2*randn(1,100)];

figure(1)
plot(t, y)
hold on
plot([12; 12], [-40; -20], '-k',  [12; 22], [-40; -40], '-k', 'LineWidth', 2)
hold off
axis([[10  34]    -60  140])
text(11.8,-30, '10 mA', 'HorizontalAlignment','right')
text(17,-45, '10 ms', 'HorizontalAlignment','center')
% set(gca, 'XTick', [10:2:34], 'XTickLabel',  {[] 12:2:32 []})    % Used temporarily to get the ‘text’ positions correct
set(gca, 'Visible', 'off')

Produces:

[Philipe]

Dear Star Strider,

Brilliant! By the looks of it this is exactly what I wanted. I haven't tested yet, but I will as soon as possible. Thank you for the quick reply!

[Star Strider]

My pleasure!

Answer 2

[chen xinfeng]

Hi, maybe you can try this Code .

The SCALEBAR is dragable & resizeable , both GUI-operate & Commandline-operate are supported.

<<www-mathworks-com-matlabcentral-answers-uploaded_files-58857-687474703a2f2f7374617469632e7a7962756c756f2e636f6d2f6368656e78696e66656e672f6a7362347676756f3262706e746d347767326136693731652f696d6167655f316172756a397573623174337074723231386562726b3031397333392e706e67.png>>

[Jose Rego Terol]

HI Chen,

Your scalebar is amazing. There is something I want to change. when I pan the plot, the bar moves with the plot. How can I keep it steady?

Answer 3

[Lee Key]

Hi,

How to add a scale bar to a map (plot) with lat and long cordinates?

[Sim]

https://it.mathworks.com/help/map/graphic-scales.html

[Star Strider]

Sim — Thank you. I do not have the Mapping Toolbox, so could have responded here.