Display out-of-range points at plot boundary?

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Christopher Hunt 2022-5-2

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https://ww2.mathworks.cn/matlabcentral/answers/1710210-display-out-of-range-points-at-plot-boundary

回答： Prabin Shrestha 2022-10-3

I have a plot with a wide range of y-values. If I plot the entire range I lose a lot of detail I am after in the lower values. Is there a way to set a y-axis maximum, then have points with values above this maximum plotted on the upper y-boundary of the plot? Then I can annotate their actual values. I suppose I could put them in by hand with a graphic editor, but I'm hoping for a more elegant solution. See attached example plot for a rough sketch of what I am imagining. Many thanks in advance.

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Jonas 2022-5-2

编辑：Jonas 2022-5-2

在 MATLAB Online 中打开

so what about setting the y values which are greater than your specific y-value equal to your maximum? something like

ylim([0 myMax]); plotY=y; plotY(plotY>myMax)=myMax; plot(x,plotY,.....)?

Matt Butts 2022-5-2

Do you need this to be dynamic to the y axis range? Could you get away with applying a simple min(...) to your data prior to plotting? You could then use text(...) to add annotations for all points where y == myMaxValue.

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Answer 1

Prabin Shrestha 2022-10-3

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https://ww2.mathworks.cn/matlabcentral/answers/1710210-display-out-of-range-points-at-plot-boundary#answer_1065905

在 MATLAB Online 中打开

I workaround this using text (https://www.mathworks.com/help/matlab/ref/text.html) and scatter (https://www.mathworks.com/help/matlab/ref/scatter.html)

plotX: your x-axis values

plotY: your y-axis values

yLimVal: value you want to be limited in y-axis

fontSize: font size you want the text to be

ofBnd = plotY >= yLimVal;
scatter(plotX(ofBnd), ones(sum(ofBnd), 1)*yLimVal)
text(plotX(ofBnd), ones(sum(ofBnd), 1)*(yLimVal-0.1), ...
        num2str(plotY(fovObndInd)), 'HorizontalAlignment', 'center',...
        'fontWeight', 'bold', 'fontSize', fontSize)

This works for plots with positive y-values but can be extended to any range of y-values. You can experiment with the value you need to decrease (or increase if you use simialr approach in negative y-axis) from y-lim values in (yLimVal-0.1) for proper text location based on your range of y-limits.