Flood Mapping - Part3 (Earth Engine Guided Project)
HTML-код
- Опубликовано: 22 дек 2020
- This guided project is part of the End-to-End Google Earth Engine course offered by Spatial Thoughts. spatialthoughts.com/courses/g...
This series of videos will take you through the entire process of building a script for visualizing and mapping floods using Sentinel-1 dataset.
Get the code from code.earthengine.google.com/?... 
Наука
Part 2 and Part 3 lines after selecting 'VH' are not the same sir. I am trying to perform a speckle filter on my images but it is returning an error" Line 43 toNatural is not defined". What should I do, I have been using my study area shapefile and learning from your videos
I appreciate your tutorial sir. however, after the second video (part 2), the visualization does not happen for me (the satellite filtered images do not show)... please help out, where could i have gone wrong?
Print the filtered collection. Likely it is empty. You need to change the filters to suitable values for your region. Make sure to use appropriate value of ASCENDING or DESCENDING pass (it depends on on the location). Sometimes the date range is too small to have any images (since Sentinel-1b is no longer operational, you get a new image every 22 days)
Thank you so much for the Tutorial. I am wondering why I am getting the message " toDB is not defined". If you please help me that would be so kind of you. Thanks (Biplab Biswas, Burdwan University)
Dear Biplab sir. The error message means you don't have the toDb() function in the script. In the source code, those functions are at the bottom of the script. Maybe you missed copy/pasting them? You can get the full source code from courses.spatialthoughts.com/end-to-end-gee.html#guided-projects
@@SpatialThoughts YES, I got it. Thank you so much.
video quality is very poor
The video quality ia fine. RUclips adjusts quality automatically based on your bandwidth. You can go to setting and manually set it to 1080p to watch it in HD.