separate rain events by specific dry period
조회 수: 1 (최근 30일)
이전 댓글 표시
Hi
I have hourly rain data for a period of 5 years
x = [0 0 0 0 0 2 4 5 14 10 16 0 0 0 0 0 24 33 22 0 0 2 3 5 0 0 0 0.........]
I need to group them considering that each rain event is separated by 3 hours of zero values or more
How could I get the numbers of rain events, their mean rain value and duration of each event?
댓글 수: 0
채택된 답변
Image Analyst
2022년 5월 12일
Try this, if you have the Image Processing Toolbox.
x = [0 0 0 0 0 2 4 5 14 10 16 0 0 0 0 0 24 33 22 0 0 2 3 5 0 0 0 0]
props = regionprops(x > 0, x, 'Area', 'MeanIntensity')
numberOfRainPeriods = length(props)
stormLengths = [props.Area] % In hours
meanRainPerHour = [props.MeanIntensity] % In mm or whatever.
integratedRainTotalsPerStorm = stormLengths .* meanRainPerHour % In mm or whatever.
You get
numberOfRainPeriods =
3
stormLengths =
6 3 3
meanRainPerHour =
8.5 26.333 3.3333
integratedRainTotalsPerStorm =
51 79 10
댓글 수: 3
Image Analyst
2023년 1월 7일
@Jovon Jacob give an example. Input, and output vectors. Best if you start your own thread and attach this code as your starting code.
Jovon Jacob
2023년 1월 8일
추가 답변 (0개)
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!