How can I replace the three YLABEL (degree of membership) to only one?

Dear Mathcoders,

I am digging into this issue, I just want to:

1. remove the three independent YLABELs (degree of membership)
2. then, re-write only one "degree of membership" that covers the three inputs
3. reduce the space among the three of them horizontally

Thank you in advance

Answer 1

[Johannes Hougaard]

I would think that you could just skip your ylabel and use an annotation textbox in stead

Moving your axes up and down is managed in the .Position(2) of your individual axes.

Does this work for you?

fh = figure;
ah(1) = subplot(3,1,1);
plot(linspace(-8*pi,pi*8,318),sin(linspace(-8*pi,pi*8,318)));
xlabel("Sine wave")
ah(2) = subplot(3,1,2);
plot(linspace(-8*pi,pi*8,318),cos(linspace(-8*pi,pi*8,318)));
xlabel("Cosine wave")
ah(3) = subplot(3,1,3);
plot(linspace(-8*pi,pi*8,318),cos(linspace(-16*pi,pi*16,318)));
hold on;
plot(linspace(-8*pi,pi*8,318),cos(linspace(-15*pi,pi*16,318)));
plot(linspace(-8*pi,pi*8,318),cos(linspace(-14*pi,pi*16,318)));
plot(linspace(-8*pi,pi*8,318),cos(linspace(-13*pi,pi*16,318)));
plot(linspace(-8*pi,pi*8,318),cos(linspace(-12*pi,pi*16,318)));
xlabel("Waves")
str = "This is a string"; % Define your ylabel
tb = annotation(fh,"textbox","position",[ah(1).Position(1)*0.8 0.18 0.5 0.3],...
    "EdgeColor",'none',"String",str,"Rotation",90,"FitBoxToText",'on','FontSize',18);
ah(1).Position(2) = ah(1).Position(2) - 0.03; % Move the top axis down a bit
ah(2).Position(2) = ah(2).Position(2) - 0.02; % Move the mid axis down a smaller bit
ah(3).Position(2) = ah(3).Position(2) - 0.01; % Move the bottom axis down a smaller bit still

[Tony Castillo]

Dear Johannes Hougaard,

Firstly, thank you for your help, but I receive an error message when applying your code. I apologize if I did not clarify that these figures come from an APP in MATLAB named Fuzzy Logic designer, I am trying to remove the ylabel self-created three-axis name for just one that as your plot covers the three of them.

clear all

clc

fh=figure;

fis=readfis('ABM_FL_MoM_Def.fis');

ah(1)=subplot(3,1,1);

plotmf(fis,'input',1)

ah(2)=subplot(3,1,2);

plotmf(fis,'input',2)

ah(3)=subplot(3,1,3);

plotmf(fis,'input',3)

hold on

str = "This is a string"; % Define your ylabel

tb = annotation(fh,"textbox","position",[ah(1).Position(1)*0.8 0.18 0.5 0.3],...

"EdgeColor",'none',"String",str,"Rotation",90,"FitBoxToText",'on','FontSize',18);

ah(1).Position(2) = ah(1).Position(2) - 0.03; % Move the top axis down a bit

ah(2).Position(2) = ah(2).Position(2) - 0.02; % Move the mid axis down a smaller bit

ah(3).Position(2) = ah(3).Position(2) - 0.01; % Move the bottom axis down a smaller bit still

Error using matlab.graphics.shape.TextBox
Unrecognized property Rotation for class TextBox.

Error in annotation (line 143)
        h = matlab.graphics.shape.TextBox(aargs{:});

Error in PlotMembership (line 19)
tb = annotation(fh,"textbox","position",[ah(1).Position(1)*0.8 0.18 0.5 0.3],...

[Tony Castillo]

I have been able to delete the former ylabel self-created three-axis name by using

set(gca, 'Ylabel',[])

Nonetheless, the error message continuos

Error using matlab.graphics.shape.TextBox
Unrecognized property Rotation for class TextBox.

Error in annotation (line 143)
        h = matlab.graphics.shape.TextBox(aargs{:});

Error in PlotMembership (line 22)
tb = annotation(fh,"textbox","position",[ah(1).Position(1)*0.8 0.18 0.5 0.3],...

[Johannes Hougaard]

What version of MATLAB are you running? As seen above the code is running in 2022a

[Tony Castillo]

Sorry, it is 2021a

[Johannes Hougaard]

Ah yeah...then I can replicate the error.

But unfortunately I can't fix it without updating to 2022a

[Tony Castillo]

I think you misuderstood what I wrote before. my version is 2021a, actually

[Johannes Hougaard]

Yeah, I got that - and when I ran the code in 2021a I could replicate the error you posted, but not in 2022a.

Apparently the 'rotation' property of a textbox annotation is a feature that has been introduced some time between the 2021a release and the 2022a release - and I couldn't find another way to rotate the textbox which would work in 2021a.

Maybe you could use 'text' in stead of annotation, but that takes an axes not a figure as its parent which may make the positioning impossible,

[Tony Castillo]

Ok, thanks!...