How do I change the marker size for a plot?
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Im trying to set the marker size on a plot but having no luck, heres my code this works fine plot( x , x^2,'-k*',... x , x^3,'-ko',... x , x^4,'-k' ) but when i try and set marker size it does not plot( x , x^2,'-k*',... x , x^3,'-ko','MarkerSize',12,... x , x^4,'-k' ) what do I need to do?
采纳的回答
Oleg Komarov
2024-11-13
编辑：MathWorks Support Team
2024-11-13
20 个投票
You can change the marker size for a line plot by setting the “MarkerSize” property, either as a name-value pair or by accessing the “Line” object. Name-value pair: If you set this property as a name-value pair with the “plot” function, you must set it after all the x,y pairs. Name-value pair settings apply to all the plotted lines. To use a different marker size for each line, use separate “plot” commands. For example: plot(x,x^2,'-k*', 'MarkerSize',20) hold on plot(x,x^3,'-ko','MarkerSize',12) plot(x,x^4,'-k' ) hold off Accessing the “Line” object: Alternatively, return the “Line” objects as an output argument from the “plot” function and then set the “MarkerSize” property for each object separately. p = plot(x,x^2,'-k*', x,x^3,'-ko', x,x^4,'-k' ) p(1).MarkerSize = 20; p(2).MarkerSize = 12;
5 个评论
Wo Mazdas
2019-7-23
Wonderful, just what I was looking for.
Is there a way to set this globally at startup for all plots?
For e.g., for line width of plots, I found that adding the following line in startup.m does it. Is there a similar property for the default marker size?
set(groot,'defaultLineLineWidth',1.3);
Nvm, figured it out. The following works:
set(groot,'defaultLineMarkerSize',4);
Yoon
2024-11-19
marker shape
Well, normally I'd run this, but I guess that doesn't work either now.
% some fake data
x = 0:10;
y1 = x.^1.5;
y2 = x.^1.6;
% plot it by specifying combined marker and line style
hp1 = plot(x,y1,'o:'); hold on
% plot it by specifying marker style alone
hp2 = plot(x,y2,'marker','square')
% if you want to change the marker style, you can
% these are the supported values for the 'marker' property
set(hp2,'marker')
更多回答（3 个）
Jan
2011-4-30
plot(x, x^2,'-k*');
hold('on');
plot(x, x^3,'-ko','MarkerSize', 12);
plot(x, x^4,'-k');
2 个评论
Leo Simon
2014-5-22
For some obscure reason, MarkerSize is not consistently used. When you use scatter, you need to set 'SizeData' instead of 'MarkerSize'. Also, the scale of SizeData is different from that of MarkerSize' E.g.,
h = scatter(rand,rand,'b','filled'); set(h,'SizeData',96);
Michelle Hirsch
2016-1-29
The difference is subtle, but intentional. It stems from the different use cases.
MarkerSize is used to control the overall size of markers, just like the overall width of a line with LineWidth or font size. The units are in points, just like LineWidth.
Scatter is used to actually scale the marker sizes based on data. Specifically, the area of the marker is proportional to the value. This is why the units are in points squared.
Matt Fig
2011-4-30
1 个投票
To make this type of thing much easier, you could download this code so that all these options are available from a simple mouse click:
3 个评论
Oleg Komarov
2011-4-30
+1
Michelle Hirsch
2016-1-29
You can also enable a context menu for changing line and marker properties just by enabling plot edit mode. Click on the button in the Figure toolbar with an arrow on it, then right click on your line.
Frank Pierce
2016-9-1
yes
Hari Desanur
2016-11-15
The Marker Size property for a particular line can be set using line object handles. For example -
l = plot(x1,y1,'*-',x2,y2,'*-');
l(1).MarkerSize = 8; % set marker size of 8 for the first line (x1,y1)
l(2).MarkerSize = 12;
1 个评论
P_L
2019-4-18
Hi there and what if you wanted to chnage the colours of 'ko' data points so that they are filled for example with 'b'
Many thanks
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