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DisaVu

Check the main README.md of this repository for further details.

Installing Dependencies

Install Yarn by running:

npm install -g yarn

Once Yarn is set up correctly, install the project dependencies:

yarn install

Development

To start a development server on http://127.0.0.1:8080, simply run:

yarn serve

Building

To build for production/deployment, run:

yarn build

After the command completed successfully, you can find the production build in the ./dist folder. Note that the folder contains a file called disaster-zones.json. This file lists all the zones that should be listed on the website. You may want to edit this file and adjust its content to match the files available on the server.

The JSON file must be an array of objects following this structure:

[
    {
        "id": "d6be9a72-99d6-4c56-bd7f-f1dba4ba413a",
        "name": "Las Vegas",
        "center": {
            "lat": 36.1909007,
            "lng": -115.1270185,
            "zoom": 10
        },
        "beforeLayer": {
            "urlTemplate": "https://disavu.silentbyte.com/tiles/rgb/before/{z}/{x}/{y}.png?r=1&r_range=[0,255]&g=2&g_range=[0,255]&b=3&b_range=[0,255]",
            "attributionHtml": "&copy; <a href=\\\"https://www.maxar.com/open-data\\\">Maxar</a>"
        },
        "afterLayer": {
            "urlTemplate": "https://disavu.silentbyte.com/tiles/rgb/after/{z}/{x}/{y}.png?r=1&r_range=[0,255]&g=2&g_range=[0,255]&b=3&b_range=[0,255]",
            "attributionHtml": "&copy; <a href=\\\"https://www.maxar.com/open-data\\\">Maxar</a>"
        },
        "amenitiesUrl": "https://disavu.silentbyte.com/geoserv/geo/vegas/amenities",
        "affectedStructuresUrl": "https://disavu.silentbyte.com/geoserv/geo/vegas/structures-affected",
        "unaffectedStructuresUrl": "https://disavu.silentbyte.com/geoserv/geo/vegas/structures-unaffected",
        "heatmapUrl": "https://disavu.silentbyte.com/geoserv/geo/vegas/structures-affected/heatmap"
    }
]
Field Description
id A UUID that uniquely identifies the disaster zone.
name The name of the disaster.
center An object specifying the center of the disaster zone and the default zoom level.
beforeLayer An object specifying a Leaflet URL template and attribution for pointing to a tile server that provides satellite images from before the disaster. May be null.
afterLayer An object specifying a Leaflet URL template and attribution for pointing to a tile server that provides satellite images from before the disaster. May be null.
amenitiesUrl The URL where the amenities can be found. May be null.
affectedStructuresUrl The URL where the polygons for the affected structures can be found. May be null.
unaffectedStructuresUrl The URL where the polygons for the unaffected structures can be found. May be null.
heatmapUrl The URL where the heatmap for the disaster can be found. May be null.

Terracotta

If you know what a python virtual envrionment is, use it to install terracotta.

If you don't, then don't worry and just install it as you normally would.

sudo apt install python3-pip -y
pip3 install terracotta

On a beefy server (because this process is very memory intensive) run the stage_3 in data_gen. It will generate a GeoTIFF split into bands in a folder called processing. Once this is done:

Optimise your raster with

preproccess_combined terracotta optimize-rasters geotifs_intermediate/*.tif -o optimized/ --reproject
terracotta ingest optimized/{name}_band{band}.tif -o a.sqlite