How do I make stairs lines transparent?

Hi all, I'm new to matlab and would be grateful for your help. I have two columns of data "m_53_rp100_rcp45" and "m_55_rp100". I have the code below to draw stairs lines. It gives the figure attached. I would like to make the red lines transparent so we can see the overlaps and black lines underneath.

figure

stairs(m_53_rp100_rcp45,':');

hold on

s = stairs(m_55_rp100,'r');

hold off

Answer 1

[Akira Agata]

Also, this link would be some help.

- Add Transparency to Graphic Objects

[Sisi]

Thank you Akira! I'm stuck on the same question as Walter - basically I don't know what to put in the x, y in the patch(x,y).My data basically contains two columns. Within each column data, i have 60,000 observations, each with a value between 1 and -1

Answer 2

[Walter Roberson]

There is no transparency setting for stair objects (or for line plots in general.) If you are using R2014b or later (as is very likely since you are new to MATLAB) then in order to get transparency you would have to create patch objects that look like lines; see https://www.mathworks.com/matlabcentral/answers/103074-how-can-i-set-the-transparency-of-line-objects-in-matlab-7-14-r2012a

[Sisi]

Hi Walter, many thanks for your reply! I've been playing with the patchline function and what confuses me is what to input in the xs and ys. I tried to put in the range of my data but it didn't work. I also tried the .color command adding a 4th element which didn't seem to matter to the transparency of the lines. For your info, my data basically contains two columns. Within each column data, i have 60,000 observations, each with a value between 1 and -1. Thanks again!

[Walter Roberson]

stairs plots have to draw with x y in the form

[x1 x2 x2 x3 x3 x4 x4 ...],
[y1 y1 y2 y2 y3 y3 y4 ...]