How to create an EE image from coordinates?

How to create an EE image from coordinates?

I could just copy paste the coordinates, e.g. ee.Image (cx).addBands (ee.Image (cy)), but the goal is to create an app in which the center point is defined by a click. So I want to be able to create an ee.Image from myPoint.coordinates.

How to visualize geometry in Google Earth Engine?

To visualize a geometry, add it to the map. For example: // Create a geodesic polygon. // Create a planar polygon. // Display the polygons by adding them to the map. For more on visualizing, see Feature and FeatureCollection Visualization.

How to get information from Google Earth Engine?

To access the information programmatically, Earth Engine provides several methods. For example, to get information about the polygon created previously, use: // Print polygon area in square kilometers. // Print polygon perimeter length in kilometers. // Print the geometry as a GeoJSON string.

How to create a geodesic polygon in Google Earth?

// Create a geodesic polygon. // Create a planar polygon. // Display the polygons by adding them to the map. For more on visualizing, see Feature and FeatureCollection Visualization. To view information about a geometry, print it.

What kind of geometries does Google Earth Engine support?

The GeoJSON spec describes in detail the type of geometries supported by Earth Engine, including Point (a list of coordinates in some projection), LineString (a list of points), LinearRing (a closed LineString ), and Polygon (a list of LinearRing s where the first is a shell and subsequent rings are holes).

How to create geometry programmatically in Google Earth?

To create a Geometry programmatically, provide the constructor with the proper list (s) of coordinates. For example: In the previous examples, note that the distinction between a LineString and a LinearRing is that the LinearRing is “closed” by having the same coordinate at both the start and end of the list.

How are pixels excluded from computation in Google Earth Engine?

Pixels equal to zero in the mask are excluded from computations and the opacity is set to 0 for display. The following example uses an NDWI threshold (see the Relational Operations section for information on thresholds) to update the mask on the NDWI layer created previously:

How are projections determined in Google Earth Engine?

Projections (left side of flow chart) of each operation are determined from the output. Curved lines indicate the flow of information to the reprojection: specifically, the output projection and scale. In Earth Engine, projections are specified by a Coordinate Reference System (CRS or the crs parameter of many methods).

How to determine the native resolution of a projection?

Note that by calling nominalScale () on the ee.Projection returned by projection (), you can determine the native resolution of the image. The native resolution is the nominal pixel scale in meters of the lowest level of the image pyramid.

How are images represented in Google Earth Engine?

As mentioned in the Get Started doc, raster data are represented as Image objects in Earth Engine. Images are composed of one or more bands and each band has its own name, data type, scale, mask and projection. Each image has metadata stored as a set of properties.

Do you need a geometry for a feature?

A Feature need not have a Geometry and may simply wrap a dictionary of properties. For example: // Create a dictionary of properties, some of which may be computed values. // Create a null geometry feature with the dictionary of properties. In this example, note that the dictionary supplied to the Feature contains a computed value.

What are the properties of a feature object?

Specifically, a Feature is an object with a geometry property storing a Geometry object (or null) and a properties property storing a dictionary of other properties. To create a Feature, provide the constructor with a Geometry and (optionally) a dictionary of other properties. For example: // Create an ee.Geometry.