Analysis implemented on-the-fly in the MapBiomas Platform

Google Earth Engine scripts that reproduce the temporal analyses of land use and land cover offered on the fly by the MapBiomas Platform. Each script reads the MapBiomas Brazil Collection 10.1 coverage asset (one class per year, 1985–2024) and turns the history of every pixel into a map: how long it has been in a class, how often, how many classes it went through, or how it changed between two years.

Tip

Read the documentation in the wiki →

What each analysis computes, with worked examples, parameters and map layers.

Analyses

#	analysis	script
1	Class Age	analysis_1_age.js
2	Class Frequency	analysis_2_frequency.js
3	Number of Distinct Classes	analysis_3_number_of_classes.js
4	Number of Changes	analysis_4_number_of_changes.js
5	Stable Classes	analysis_5_stable.js
6	Class First Year	analysis_6_first_year.js
7	Class Last Year	analysis_7_last_year.js
8	Time Since Last Occurrence	analysis_8_time_since_last.js
9	Accumulated Class	analysis_9_accumulated.js
10	Transitions	analysis_10_transitions.js

Usage

Copy a script from codes/ into the Google Earth Engine Code Editor, set the parameters at the top (for example targetClass, the MapBiomas legend code of the class of interest) and click Run. The result is added to the map as a layer.

Repository

• codes/: one script per analysis, each self-contained
• docs/figures/: the figures used in the wiki, generated by running the scripts on example pixels (see Figures)