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How do I connect points in a scatter plot with a line?

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Matt
Matt on 15 Jul 2014
Hi
I plot a scatter for multiple points and i want to connect them using line. Below is my code. The plot i get is only scatter, I cant connect them through a line. Any help appreciated!
x=[1,2,3,4,5,6,7,8,9];
y=[1,2,3,4,5,6,7,8,9];
hold all
for i=1:8
scatter(x(i),y(i),'X')
line(x(i),y(i))
end
Thanks
Matt

Accepted Answer

Ben11
Ben11 on 15 Jul 2014
Edited: MathWorks Support Team on 27 Nov 2018
If you want to plot both markers and a line, you can use the plot function and specify a line style that includes marker symbols and a line style, such as '-x'. For example, this code plots a line with crosses at the data points.
plot(x,y,'-x')
If you are trying to plot only the first eight points, then use this code instead:
plot(x(1:8),y(1:8),'-x')
If you are plotting from a cell array, then use this code instead:
plot(cell2mat(x(1:8)),cell2mat(y(1:8)),'-x')
  2 Comments
Ben11
Ben11 on 15 Jul 2014
Great! You can accept John's answer as I kind of use his to answer your question. Glad it helped!

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More Answers (2)

John D'Errico
John D'Errico on 15 Jul 2014
You asked this question before! In fact, you asked exactly that question, but for some reason nobody managed to give a good answer.
plot(x(1:8),y(1:8),'b-x')
There is NO need for a loop. The above single line will plot x marks at each point, and connect them with a line, all in blue.
If you prefer to plot the line in blue, and the x marks in red, this will do it:
plot(x(1:8),y(1:8),'b-',x(1:8),y(1:8),'rx')
  3 Comments
John D'Errico
John D'Errico on 18 Jan 2017
@ZETT: This is a TOTALLY different question. Ask it as a question. A separate and new question.

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Brian B
Brian B on 15 Jul 2014
Edited: Brian B on 15 Jul 2014
Don't use a for loop:
x=[1,2,3,4,5,6,7,8,9];
y=[1,2,3,4,5,6,7,8,9];
hold on
scatter(x,y,'X')
line(x,y)
or just
plot(x,y,'-o')
  1 Comment
John D'Errico
John D'Errico on 15 Jul 2014
Both of you have missed that for some reason, he wants to plot the first 8 elements.

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