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giosans / multiregional-landslide-detection-article

code repository for the article "Multi-Regional Landslide Detection using Combined Unsupervised and Supervised and Machine Learning"
GNU General Public License v3.0
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Error: Cannot read property 'value' of undefined #2

Closed erin-ntnu closed 2 years ago

erin-ntnu commented 2 years ago

Hi!

After changing out the google fusion table for a .csv file, now I have a problem where it is bouncing back and forth between two lines where it is trying to calculate the end date.

I can't spot what the problem is. As far as I can see, all the variables and functions in that segment have been used previously in the code without getting that error. Are you able to see it?

https://code.earthengine.google.com/?scriptPath=users%2Ferinpilaar%2FPreprocessing_EL%3APreprocessing-EL

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giosans commented 2 years ago

Hey! May have to make it public cause I can't see it. It seems those variables don't have value property, so I'd debug the code by inspecting those ev_result and end_date_result and check what the properties are.

erin-ntnu commented 2 years ago

https://code.earthengine.google.com/?accept_repo=users/erinpilaar/Preprocessing_EL

Hi! Does this one work, I have allowed read access for all.

giosans commented 2 years ago

hey! It does work, though it's blank.

erin-ntnu commented 2 years ago

Uff.... Is there nothing under the Scripts tab? image

giosans commented 2 years ago

Hihi! Cant see your users/erinpillar/ folder at all. If not in the writer folder, I should at least see it in the reader folder. Cant remember how to share resources, sorry. This article may help you https://medium.com/google-earth/making-it-easier-to-reuse-code-with-earth-engine-script-modules-2e93f49abb13

erin-ntnu commented 2 years ago

Hey!

So for anyone else trying- I have made it run finally!

The problems were mainly to do with the formatting of the date and coordinates in the csv that I was trying to use instead of a Goggle Fusion table. My solution was to use a shapefile, I created one in ArcMap, with a date column 'event_date' written in the format yyyy-MM-dd'T'HH:mm:ss.SSSZ, e.g. 2019-07-30T00:00:00.000+0100.

There was also an issue with the ALOS_dem. I have a feeling that originally there was only one band in that dataset and now there are multiple. There were problems to reproject it because it was still behaving as an 'Image Collection', rather than as an Image. My solution was to upload my own DEM with a single band as a geotiff asset, and change the code references accordingly.