How to extract the scatter data based on a function
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I have a scatter data as attached image follows, how to sign the data outside the function line with '1' and the data under the function line with '0' then save it into one variable?
Antworten (1)
Image Analyst
am 18 Jul. 2018
I have no idea what "sign the data" with 0 or 1 means, but to get the data under and above/outside the function, try something like this
indexesUnderTheCurve = false(1, length(x));
for k = 1 : length(x)
thisX = x(k);
thisY = y(k);
curveY = YourFunction(thisX); % Plug the x into your custom function
if thisY < curveY
% Under the curve
indexesUnderTheCurve(k) = true;
end
end
xUnder = x(indexesUnderTheCurve);
yUnder = y(indexesUnderTheCurve);
xOver = x(~indexesUnderTheCurve);
yOver = y(~indexesUnderTheCurve);
5 Kommentare
Image Analyst
am 21 Jul. 2018
To help me from transferring all that code, can you attach your m-file?
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