Plot with markers defined

Question

Ronald Niwamanya 2020-9-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/592186-plot-with-markers-defined

关闭： MATLAB Answer Bot 2021-8-20

plot_markers.fig

I am plotting the same function for different parameters. I dont want to repeat writing the functions so I use the for loop.

How can i define markers so that each line/curve (attached) has a different marker?.

Below is the sample code.

 clear, clc, close all 
x = (-2:0.4:2);
for a=[2,3,4]
    if a == 2
        power = 'Power=2';
    elseif a == 3
        power = 'Power=3';
    elseif a == 4
        power = 'Power=4'; 
    else 
        error('not-supported.')
    end        
       
y = x.^a;
plot(x,y,'-s','LineWidth',2,'DisplayName',sprintf(power));
hold on
grid on
legend

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KSSV 2020-9-11

What exactly you want to do?

Ronald Niwamanya 2020-9-11

Hi. I need to plot the above diagram but using different markers for each line. Is there a way I can do it so that I can just keep changing the parameter a and seeing the results?

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Answer 1

KSSV 2020-9-11

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/592186-plot-with-markers-defined#answer_493138

编辑：KSSV 2020-9-11

在 MATLAB Online 中打开

x = -2:0.4:2;
for a=  [2 3 4] ; 
    if a == 2
        M = {'-*r'} ; 
    elseif a == 3
        M = {'-db'} ;        
    elseif a == 4
        
        M = {'-ok'} ; 
    else 
        error('not-supported.')
    end              
y = x.^a;
plot(x,y,M);
hold on
grid on
end
legend

OR

 clear, clc, close all 
x = -2:0.4:2;
a=  [2 3 4] ; 
m = length(x) ;
n = length(a) ; 
y = zeros(m,n) ;
for i = 1:n
  y(:,i) = x.^a(i) ; 
end
plot(x,y) ; 
legend