Plot connected vertical points with different marks

Question

Rub Ron 2021-8-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1437504-plot-connected-vertical-points-with-different-marks

评论： Image Analyst 2021-8-20

采纳的回答： Star Strider

I have a vector x=[ 1 2 3 4], and a matrix of size: 3x4.

I want to plot something like this:

Update: the number of vertical points can be different (in my example I used 3, but they can be from 2 to 5).

Update 2: "x" mark is not the center, it might happen than "x" mark is lower or higher than the other two points, for a particular x value.

Any ideas?

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Answer 1

Star Strider 2021-8-20

1
链接

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https://ww2.mathworks.cn/matlabcentral/answers/1437504-plot-connected-vertical-points-with-different-marks#answer_771294

在 MATLAB Online 中打开

Try something like this —

x=[ 1 2 3 4];

M = rand(3,4);

Mx = max(M);

Mn = min(M);

figure

plot(x, Mx, 'd')

hold on

plot(x, Mn, 'o')

plot([x; x], [Mx; Mn], '--k')

hold off

grid

xlim([0 5])

.I am not certain what the ‘x’ markers in the centres of the lines represent, so I did not include them. However they could llikely be added with one plot call.

.

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Star Strider 2021-8-20

在 MATLAB Online 中打开

@Rub Ron — My code can likely be adapted reasonably easily to any size matrix and compatible-size independent variable vector. It would help to have an actual matrix and to know what you want to display. The ‘x’ markers are then just another plot or scatter call within the hold block.

@Kevin Holly — Thank you!

Adding the ‘x’ markers to my previous code —

x=[ 1 2 3 4];

M = rand(3,4);

Mx = max(M);

Mn = min(M);

xv = rand(size(x));

figure

plot(x, Mx, 'd')

hold on

plot(x, Mn, 'o')

plot([x; x], [Mx; Mn], '--k')

plot(x, xv, 'xm', 'MarkerSize',10) % Added

hold off

grid

axis([0 5 0 1]) % Optional

.

Rub Ron 2021-8-20

@Kevin Holly thanks!

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Answer 2

Image Analyst 2021-8-20

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1437504-plot-connected-vertical-points-with-different-marks#answer_771289

在 MATLAB Online 中打开

Try this:

markerSize = 14;
lineWidth = 2;
x = [1 2 3 4]
y = 0.1 + 0.4 * rand(3, 4)
[rows, columns] = size(y)
for col = 1 : columns
	yTop = max(y(:, col));
	yBottom = min(y(:, col));
 	yMid = setdiff(y(:, col), [yTop; yBottom]);
	% Plot line
	plot([x(col), x(col)], [yBottom, yTop], 'b-', 'LineWidth', 3);
	hold on;
	% Plot markers
	plot(x(col), yTop, 'bd', 'LineWidth', lineWidth, 'MarkerSize', markerSize);
	plot(x(col), yBottom, 'bo', 'LineWidth', lineWidth, 'MarkerSize', markerSize);
	plot(x(col), yMid, 'bx', 'LineWidth', lineWidth, 'MarkerSize', markerSize);	
end
grid on;

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Rub Ron 2021-8-20

Hi, thank you. The number of vertical points can be different, from 2 to 5 (in my example I used 3). Can it be generalized? Sorry if I was not explicit.

Image Analyst 2021-8-20

Yeah, that was not specified. But it looks like you've accepted an answer so I guess you got it all figured out for the case of variable number of rows.

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