[[["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 dataset contains annual Normalized Difference Vegetation Index (NDVI) composites from Landsat 7 Level L1T orthorectified scenes, using top-of-atmosphere reflectance. Data spans from 1999-01-01 to 2017-01-01, with a 30-meter pixel size, and NDVI values ranging from -1 to 1. Composites are made from all annual scenes, with the most recent pixel value used. The USGS is the data provider and this collection is complete. It is deprecated, and users are advised to switch to an alternative dataset.\n"]]