How-To

Time series

Series difference

Given a time series of observations, calculate the differences between observations at a regular step. Similar to Python Pandas Series.diff

TODO: could be simplifed for brevity - are the two below different cases - option for forward or backward difference

GEE JS Example 1

GEE JS Example 2

Landsat

Correction

Minnaert terrain correction

Implementation where Minnaert constant k is calculated per pixel as a function of slope.

TODO: Sun azimuth and zenith angles are taken from image metadata, so represent nadir position and are held constant. Could adjust for every pixel.

GEE JS

Landsat7 SLC-off gap filling

GEE JS

TODO:

Feature Collection

Generate regular grid intersecting a geometry

Author: Gennadii Donchyts

https://code.earthengine.google.com/ff50a3e4745b1e732b1b7ac8a12623b6

Also implemented in users/gena/packages:grid library

var g = require('users/gena/packages:grid')
var dx = 0.45
var dy = 0.45
var grid = g.generateGridForGeometry(region.bounds(), dx, dy)

Example of its use in dividing an image for export

Author: marortpab

https://code.earthengine.google.com/3a413327f67acc350bec59ba5ce1cb3c

TODO: make reproducable - calls user asset(s)

Charts

Scatterplot

3-band

Author: Gennadii Donchyts

https://code.earthengine.google.com/252fda4ed0340c3e926096b01668576b

2-band with color for group

Author: barbosaale

https://code.earthengine.google.com/41f4c83698112405fcaf591ed9145a25

TODO: make reproducable - calls user asset(s)

UI

ui.Label

Adjust the position of a label within a panel using textAlign style property

https://code.earthengine.google.com/b4c03edade9ab3509d0e8a9b5a4e09b1