Peak detection in a Filled area 2-D plot

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masha ghasemi
masha ghasemi 2020-7-5
评论： Image Analyst 2020-7-5
Hello,
i've been working on "Filled area 2-D plot",
I have this image(that i attached) ....how can i detect maximum value of Y?
as you see in this image Y is 11.
Thanks a lot.
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masha ghasemi
masha ghasemi 2020-7-5
hello
i have an image from a face, i ploted this image using (Filled area 2-D plot),
i attached my result, i wanna find maximum Y from plot(as you see in this image is Y=11)
I coudnt use ''findpeaks'' because my output type from this kind of plot(Area) is 1*92 Area
Image Analyst
Image Analyst 2020-7-5
Give us data and code to reproduce that plot.

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回答（1 个）

Sumeet Singh
Sumeet Singh 2020-7-5
You can use findpeaks, available in Signal Processing Toolbox to find local maxima.
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Sumeet Singh
Sumeet Singh 2020-7-5
If data is available to you then you may try this code.
[max_col, rows] = max(data)
[peak, col_idx] = max(max_col) %peak -> peak value in data, col_idx -> column index of peak value
row_idx = rows(col_idx) %col_idx -> row index of peak value
Stacked value can be calculated by summing up the row containing peak value
masha ghasemi
masha ghasemi 2020-7-5
hello
i have an image from a face, i ploted this image using (Filled area 2-D plot),
i attached my result, i wanna find maximum Y from plot(as you see in this image is Y=11)
I coudnt use ''findpeaks'' because my output type from this kind of plot(Area) is 1*92 Area
please heeeelp me

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