How to find and plot the absolut average error of a fittet curve to a Set of Data
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In a for Loop I have my Data:
x_relevant{i} = x{i}(idx_min{i}:idx_max{i})
y_relevant{i} = y{i}(idx_min{i}:idx_max{i})
plot(x_relevant{i},y_relevant{i},'color',c2{i},'Marker','.','linestyle','none')
hold on
And a fittet linear Regression:
p{i} = polyfit(x_relevant{i}, y_relevant{i},1)
fit = polyval(p{i},x_relevant{i})
plot(x_relevant{i},fit,'color',c{i},'LineWidth',2)
hold on
How do I find the Standard error of this fitted curve?
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回答 (1 件)
Ameer Hamza
2020 年 11 月 28 日
You can add the absolute error between actual datapoints and fitted curve like this
p{i} = polyfit(x_relevant{i}, y_relevant{i},1)
fit = polyval(p{i},x_relevant{i})
plot(x_relevant{i},fit,'color',c{i},'LineWidth',2)
hold on
plot(x_relevant{i},abs(fit-y_relevant{i}),'color',c{i},'LineWidth',2)
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