marking a points in a curve that match condition
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Hello , i have a plot from two vectors X and Y how can i mark on the plot all the point in which the Y values are between 5 and 7?
thanks
1 Comment
Jan
on 16 Mar 2017
Please add some test data, which match your code. Currently the information is vague only and answering must be based on guessing.
Accepted Answer
Image Analyst
on 17 Mar 2017
Try this:
numPoints = 20;
offset = 0.05; % How much away from the marker the text should be.
x = sort(rand(1, numPoints));
y = 10 * rand(1, numPoints);
plot(x, y, 'g', 'LineWidth', 2);
hold on;
index = (5 < y & y < 7);
plot(x(index), y(index), 'or', 'LineWidth', 2);
grid on;
for k = 1 : length(y)
if index(k)
caption = sprintf('x=%.2f, y=%.2f', x(k), y(k));
text(x(k) + offset, y(k) + offset, caption, 'BackgroundColor', 'y');
end
end
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More Answers (1)
Jan
on 16 Mar 2017
x = 1:100;
y = rand(1, numel(x)) * 10;
plot(x, y, 'g');
hold('on');
index = (5 < y & y < 7);
plot(find(index), y(index), 'or');
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