How to interpolate data as stairs

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Paul 2024-6-6

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https://ww2.mathworks.cn/matlabcentral/answers/2125986-how-to-interpolate-data-as-stairs

回答： Star Strider 2024-6-6

I have a struct (lets call it Turbine State) with both time and value data. The issue is there aren't enough data points captured with the range I want, so MATLAB intertpolates the missing data linearly between points.

i.e. shortly beore 14:10 the 'state' is 12 but this should remain 12 until it isn't anymore. so the state should remain 12 before just after 14:30 when it drops to -1. How do i make this a 'stairs' representation and not a liner interpolation?

Thanks :)

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Deepak Gupta 2024-6-6

I think you are directly using plot function on your data, instead you can use stairs function to plot staircase like plot.

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Answer 1

Star Strider 2024-6-6

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2125986-how-to-interpolate-data-as-stairs#answer_1468331

You answered your own question — stairs. Note that you can get the (x,y) coordinates as outputs from the stairs function if you wnt to use them with patch or other plots.