Connect points to the straight line

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Linda Scarzanella 2020-8-27

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评论： Star Strider 2020-8-28

Hi everybody,

How can I connect the points to the straight line in the figure ?

Thanks

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David Hill 2020-8-27

Are you talking about a stem() plot? Look at the stem() function.

Linda Scarzanella 2020-8-27

yes, I checked and it works for me! Do you know if there's a way to show the distance from the point to the line? (or the point value, cuz I'd like to have it directly on the plot)

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Star Strider 2020-8-27

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编辑：Star Strider 2020-8-27

在 MATLAB Online 中打开

Try this (with your own data):

x = 1:10;                                           % Create Data
y = 2.5*rand(size(x));                              % Create Data
stln = 0;
figure
plot(x, stln+zeros(size(x)), '-r')                 % Straight Line
hold on
plot(x, y, 'xk')                                    % Points
plot([x; x], [zeros(size(y))+stln; y], '-g')        % Connecting Lines
hold off
ptlbls = compose('  %2.1f', y);
text(x, y, ptlbls, 'HorizontalAlignment','left', 'VerticalAlignment','middle')
axis([0  11    -0.1  2.5])