How to make the marker width more thicker

I have plot the data but what i want is to make the marker more thicker, so that it can be more clearly visible . I have attached the code .i would be grateful if you could help me .Thank you in advance .

Answer 1

[Ive J]

Set LineWidth when calling plot function.

plot(rand(10, 1), rand(10, 1), 'bo','LineWidth', 2)

[Cris LaPierre]

See here:

"Line width, specified as a positive value in points, where 1 point = 1/72 of an inch. If the line has markers, then the line width also affects the marker edges."

[DEWDROP]

Thank you ,it worked

[Kamilu Sanusi]

@Ive J, Hi, I have a similar problem, but linewidth is not working for marker on pzmap, pls kindly assist and if i intend to connect the marker together, please how do I adjust my program to implement that? Thank you

[Ive J]

It's better to post a new question, but regardless you can access the ax children and modify the properties as desired:

H = tf([2 5 1],[1 3 5]);
pzmap(H)
grid on

ax = gca;
li = ax.Children(1).Children;
for k = 1:numel(li)
    li(k).LineStyle = "-";
    li(k).LineWidth = 2;
end

[Zach Leo]

What if we need thin line but thicker marker edges?

[Sivylla Paraskevopoulou]

The plot function provides the name-value arguments Marker, MarkerIndices, MarkerEdgeColor, MarkerFaceColor, and MarkerSize so that you can customize the appearance of markers. Use the name-value argument MarkerSize to change the size of the marker.

Answer 2

[Kamilu Sanusi]

@Ive J, Please I would like you to help me on this problem of mine, thank you

Given the following elements of matrix A, three matrices are intended to be generated using different variable D as D = 0, D = 4 and D = 70. The poles resulting from this matrices are to be plotted using different Marker, and the marker is inted to be bold, not necessarily big in size. I tried but im getting the error

''Assigning to 2 elements using a simple assignment statement is not supported. Consider using comma-separated list assignment''.

Any assistance would be highly appreciated.

Thank you

Ta1 = 24;  Ta2 = 27;  Ta3= 20;
H11 = -0.0641;  H12 = 0.0359;  
H21 = 0.1176;  H22 = -0.2057; 
H31 = 0.2077;  H32 = 0.1961; 
for D = [0 4 70]
    A = [0 0 1 0 -1;0 0 0 1 -1;(-H11/Ta1) (-H12/Ta1) (-D/Ta1) 0 0;...
        (-H21/Ta2) (-H22/Ta2) 0 (-D/Ta2) 0;(-H31/Ta3) (-H32/Ta3) 0 0 (-D/Ta3)];
    Eig = eig(A);
    a = Eig(1,1);
    b = Eig(2,1);
    c = Eig(3,1);
    d = Eig(4,1);
    e = Eig(5,1);
    s = tf('s');
    T = (1)/((s-a)*(s-b)*(s-c)*(s-d)*(s-e));
    ax = gca;
    
    P = pole(T);
    if D == 0
        pzmap(T)    
        PZP = findobj(ax, 'Tag', 'PZ_Pole')
        PZP.Marker = 'v';
        PZP.MarkerSize = 8;
        PZP.Color = 'r';
    end
    hold on
    if D == 7
        pzmap(T); 
        PZP = findobj(ax, 'Tag', 'PZ_Pole')
        PZP.Marker = 'd';
        PZP.MarkerSize = 8;
        PZP.Color = 'k';
    end
    hold on
    if D == 70
        pzmap(T);
        pzmap(T); 
        PZP = findobj(ax, 'Tag', 'PZ_Pole')
        PZP.Marker = '*';
        PZP.MarkerSize = 8;
        PZP.Color = 'y';
    end 
end                 

PZP = 
  Line (PZ_Pole) with properties:

              Color: [0 0.4470 0.7410]
          LineStyle: 'none'
          LineWidth: 0.5000
             Marker: 'x'
         MarkerSize: 7
    MarkerFaceColor: 'none'
              XData: [-0.1505 -0.0885 0.1505 0.0885 9.9556e-18]
              YData: [0 0 0 0 0]
              ZData: [1×0 double]

  Show all properties

PZP = 
  3×1 Line array:

  Line    (PZ_Pole)
  Line    (PZ_Pole)
  Line    (PZ_Pole)

Assigning to 3 elements using a simple assignment statement is not supported. Consider using comma-separated list assignment.

[Image Analyst]

Look at PZP. It's an array so you need to assign each one, one at a time. Perhaps like

for k = 1 : numel(PZP)
    PZP(k).Marker = '*';
    PZP(k).MarkerSize = 8;
    PZP(k).Color = 'y';
end

[Kamilu Sanusi]

@Image Analyst, please i got this error while using your suggeted input

Unrecognized function or variable 'PZP'.

Error in pzmap2 (line 168)

for k = 1 : numel(PZP)

Please ckindly help me effect the corrections in the code.

Thank you

[Anish Mitra]

Beginning in R2024b, the MarkerSize in a "pzplot" can be updated using the property.

PZPlot - Access pole-zero plot properties - MATLAB

pzp = pzplot(zpk(-1,[-2 -3],1));
pzp.Responses(1).MarkerSize = 10;

There are also properties on other linear analysis plots that allow customization of the style.

Customize Linear Analysis Plots at Command Line - MATLAB & Simulink