Raluca Nicola RalucaNicola

How do I search for data?

Search by ${topic} geodata on Google
Go to a page I already know with data links:
- Natural Earth: http://www.naturalearthdata.com/downloads/
- Esri Living Atlas: https://livingatlas.arcgis.com/en/ (mostly for data published as esri services)
- This awesome list of public geodata: https://freegisdata.rtwilson.com/ (unfortunately hard to keep up to date)
Search for open data portals of the location I am interested in (most big cities have an open data portal)
- Recently found: Esri Open Data & A map of open data portals
Other repos/lists with data:

Get the index of the layer you want to modify. To do that, run this snippet in the console:

view.map.allLayers.forEach(function(layer, index) {
  console.log(layer.title, "->", index);
});

Set the halo color, transparency and size by running the changeHalo function in the console.

Message of the map: figure out what are the high density population areas in the US.

Why would I use 3D? it looks more appealing, the user is excited to explore the map in 3D

Additional problems in 3D:

harder to navigate
- solution: navigation widgets; much more intuitive using touch navigation!
hard to compare heights
solution: mapping the same variable on both color and height;

All these commands can be followed along using this repository:

I might not know the exact name of the branch, but I do know it contains some word

Maybe I don't have all the branches in sync with the remote repo, so I need to fetch them:

Level of detail

For maps we would rather use:

Some concepts behind creating multiscale maps would be:

	const webscene = new WebScene({
	ground: {
	opacity: 0 // set transparent ground
	}
	});

	const view = new SceneView({
	container: "viewDiv",
	map: webscene,
	qualityProfile: "high",