[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[],["This Landsat 7 dataset, provided by USGS, contains annual composites from 1999 to 2017, derived from orthorectified scenes using top-of-atmosphere (TOA) reflectance. Each year's composite includes all scenes, selecting the \"greenest\" pixel based on the highest Normalized Difference Vegetation Index (NDVI). The USGS has discontinued producing this pre-collection dataset, advising users to switch to Collection 1. The data is public domain and requires USGS acknowledgement when used.\n"]]