Plot smoothing line without points

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Max1234 2023-1-2

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https://ww2.mathworks.cn/matlabcentral/answers/1887322-plot-smoothing-line-without-points

评论： Star Strider 2023-1-3

Hey,

can i just plot the smoothing line without the scatter points? And is it possible to get just the Data of the smoothing line to plot more than one line in one figure?

Thank you!

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Cameron 2023-1-2

What do you mean by smoothing line? You can take the information from polyfit and use that if it's some polynomial fit, but I'm not sure what your model looks like. I'm also not sure what the second question means.

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采纳的回答

Star Strider 2023-1-2

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在 MATLAB Online 中打开

I am not certain what you wnat to do.

Taking a guess —

N = 20;

x = sort(randn(1,N));

y = randn(1,N);

xs = linspace(min(x), max(x), 10*N);

ys = interp1(x, y, xs, 'spline'); % Interpolate Using 'spline'

figure

subplot(2,1,1)

plot(x, y, '.')

hold on

plot(xs, ys)

hold off

grid

axis('padded')

title('With Points')

subplot(2,1,2)

plot(xs, ys)

grid

axis('padded')

title('Without Points')

To plot more than one line in one axes, use the hold function. To plot more than one axes in one figure, use subplot, tiledlayout, or stackedplot, depending on what you want to do. (I have illustrated a version all those here.)