Trendline with Slope of zero
16 ビュー (過去 30 日間)
古いコメントを表示
Hello,
I have a vector of raw lamp radiance data, and a vector of the moving standard deviation of that data. I want to add a trendline for the range of the standard deviation in which the slope is zero, in order to show when the lamp is stable. I have used polyfit to place the trendline to the graph, but it is not perfectly straight over the entire range of data. Is there a function in MATLAB that does this for me, or do I just have to keep adjusting which range of data I would like to look at manually?
0 件のコメント
採用された回答
Image Analyst
2019 年 2 月 23 日
A line with slope zero will have a fixed constant y value. If you know that y value, you can draw a line there with line():
line(xlim, [y, y], 'LineWidth', 2, 'Color', 'r');
grid on;
Attach your data if you want more help so we can offer a solution with your exact data.
8 件のコメント
Image Analyst
2019 年 2 月 24 日
What I would do it fit this to "the rate equation" and decide how far below the theoretical assymptote defines "stable" for you. I attach a rate equation fitting. See if you can adapt it to your data and determine when the assymptote is. It should be around 0.14835.
その他の回答 (0 件)
参考
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!