any way to plot scatter-line with different symbol

Question

Yu Li 2019-2-28

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https://ww2.mathworks.cn/matlabcentral/answers/447530-any-way-to-plot-scatter-line-with-different-symbol

评论： Star Strider 2019-2-28

采纳的回答： Star Strider

is there anyway to draw a scatter-line figure with different symbol like below:

Thanks!

Yu

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Answer 1

Star Strider 2019-2-28

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https://ww2.mathworks.cn/matlabcentral/answers/447530-any-way-to-plot-scatter-line-with-different-symbol#answer_363199

编辑：Star Strider 2019-2-28

在 MATLAB Online 中打开

To reproduce that figure, try this:

x = 1:6;
y = 1:6;
figure
plot(x(1:4), y(1:4), '-ok', 'MarkerFaceColor','k')
hold on
plot(x(4:5), y(4:5), '-k')
plot(x(5:6), y(5:6), '-ok', 'MarkerFaceColor','w')
hold off
axis([0  7    0  7])

EDIT — Added plot image:

any way to plot scatter-line with different symbol - 2019 02 28.png

Experiment to get the result you want.

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Yu Li 2019-2-28

Thank you.

Bests,

Yu

Star Strider 2019-2-28

As always, my pleasure.

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Answer 2

dpb 2019-2-28

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Not by controlling the 'marker' properties in a single scatter call, no, unfortunately. Those are global for the object.

It's simple-enough to do with plot and/or line, however...

hL=plot(A,B,'-k');                          % draw the line, no markers full dataset
hold on                                     % prepare to augment the plot
ixOn=[1:3];                                 % set the subset of one marker type/fill
hS(1)=scatter(A(ixOn),B(ixOn),'filled');    % draw the filled markers
hS(2)=scatter(A(~ixOn),B(~ixOn));           % and the unfilled ones

"Salt to suit..."

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Yu Li 2019-2-28

perhaps it should be:

clear all
close all
clc
A=1:7;
B=1:7;
hL=plot(A,B,'-k');                          % draw the line, no markers full dataset
hold on                                     % prepare to augment the plot
ixOn=[1:3];                                 % set the subset of one marker type/fill
hS(1)=scatter(A(ixOn),B(ixOn),'filled');
hold on% draw the filled markers
hS(2)=scatter(A(4:7),B(4:7)); 

I personally think would be better if the line do not cross the scatter circle .

dpb 2019-2-28

Your choice...the one draws the line piecemeal with the markers; the other just goes ahead and draws the line itself in "one swell foop" and then adds the markers...

The former takes the extra segment to join the two line segments; the latter just picks the desired marker style for the points and adds them on top of the existing line.

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