[HN Gopher] Show HN: Forest Watch
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       Show HN: Forest Watch
        
       Keep track of forests in your area by viewing changes in tree cover
       over time.  I've build this as a demo of what you can do with the
       ArcGIS library and the geo data that is offered by Global Forest
       Watch and Esri. Don't forget to click the history button.  Works
       best on desktop!  The demo is build with React and open source:
       https://github.com/vnglst/koenvangilst.nl/tree/main/app/(bla...
        
       Author : vnglst
       Score  : 48 points
       Date   : 2024-03-06 18:01 UTC (4 hours ago)
        
 (HTM) web link (koenvangilst.nl)
 (TXT) w3m dump (koenvangilst.nl)
        
       | TuringNYC wrote:
       | Thanks for sharing this! Question, I looked thru the code and
       | didnt see the code for actually pulling the historical images,
       | did you do that manually via GFW/Esri?
       | 
       | I was helping with a project for the Audubon Society some years
       | back and we were pulling these images via ESA sweeps, which were
       | all available via AWS (puller pays, which was quite inexpensive).
       | However, it required some complex geometry and post-processing.
       | Did you have to do something similar?
        
         | vnglst wrote:
         | It's using the Wayback Imagery from ArcGIS. I'm loading the
         | layers based on a list of ids (url in the config).
         | 
         | There's also some logic involved in making sure the user only
         | sees the layers with new data in it. That's running on the
         | client and it's quite heavy.
         | 
         | https://livingatlas.arcgis.com/wayback/#active=37965&mapCent...
        
       | istinetz wrote:
       | I want to help increase the coverage, what can I do?
        
         | vnglst wrote:
         | Eating less meat (especially beef) is a good start. This is a
         | mayor cause of deforestation in the Amazon. In Papua, Indonesia
         | it's palm oil.
        
       | vnglst wrote:
       | Sorry folks, it seems like the Global Forest Watch layer has
       | stopped working. That's the layer in pink that was indicating
       | loss of tree cover. Might be the Hackernews effect.
        
         | yreg wrote:
         | PSA: Everything currently loads for me, but it takes a long
         | time (up to a few minutes). If you want to check it out, stop
         | moving around and wait a bit.
        
       | yreg wrote:
       | This looks neat!
       | 
       | It seems that the gain/loss layers do render, but it can
       | currently take a very long time. The user doesn't see whether
       | data is still fetching or if there are no changes/data for the
       | displayed region. Perhaps you could reflect this in the UI
       | somehow?
       | 
       | I will make sure to check it out later, once it's no longer being
       | hugged.
       | 
       | I also wanted to ask for a 'go to my location' button, only to
       | find out that it is there in the bottom right corner. Perhaps it
       | would be useful to make it more prominent?
        
         | vnglst wrote:
         | Great feedback, going to take a look thanks!
        
       | jaxgeller wrote:
       | At the end of the year, the EU will require importers of certain
       | commodities (coffee, cocoa, cattle, palm oil, etc) to have
       | evidence the commodity was not grown on deforested land. It's
       | called the EUDR[1], and I don't think a lot of importers are
       | ready for it.
       | 
       | The crux of the issue is each importer requires verifiable
       | satellite evidence. I could see suppliers using this site to
       | generate their compliance statements!
       | 
       | [1].
       | https://environment.ec.europa.eu/topics/forests/deforestatio...
        
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       (page generated 2024-03-06 23:00 UTC)