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kvos / CoastSat.slope

Beach-face slope estimation from satellite-derived shorelines, extension of the CoastSat toolbox.
http://coastsat.wrl.unsw.edu.au/
GNU General Public License v3.0
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Incorrect slope estimate #27

Closed mkewsds12 closed 4 months ago

mkewsds12 commented 1 year ago

Hi @kvos, it is a very nice job. I have some questions for you. Why is my estimated slope all one value (set maximum value)? Sometimes it calculates the correct value, sometimes it doesn't. This confuses me very much. I only extract one shoreline each year for analysis.

kvos commented 1 year ago

You need to use ALL the shorelines to have enough data to get an estimate of the beach-face slope. With one shoreline per year it will not be enough data to capture the tidal signal in the shoreline time-series.

mkewsds12 commented 1 year ago

Thanks for your answer, the problem has been solved！