landsat

Google Earth Engine: mask clouds and map a function over an image collection of different sensors

由 五迷三道 提交于 2019-12-24 06:18:36
问题 I want to combine all the Landsat sensors from 1985 up today in Google Earth Engine, remove the clouds and calculate the time-series of the NBR index. As a new GEE user I have the following: // find all data and filter them by date var lst5 = ee.ImageCollection('LANDSAT/LT5_SR').filterDate('1984-10-01', '2011-10-01'); var lst7 = ee.ImageCollection('LANDSAT/LE7_SR').filterDate('2011-10-01', '2013-04-07'); var lst8 = ee.ImageCollection('LANDSAT/LC8_SR').filterDate('2013-04-07', '2018-05-01');

How to iterate over and download each image in an image collection from the Google Earth Engine python api

由 ￣綄美尐妖づ 提交于 2019-12-09 01:21:30
问题 I am new to google earth engine and was trying to understand how to use the Google Earth Engine python api. I can create an image collection, but apparently the getdownloadurl() method operates only on individual images. So I am trying to understand how to iterate over and download all of the images in the collection. Here is my basic code. I broke it out in great detail for some other work I am doing. import ee ee.Initialize() col = ee.ImageCollection('LANDSAT/LC08/C01/T1') col.filterDate('1

地理空间数据云 Landsat 8 OLI_TIRS 影像数据下载详解

由 匿名 (未验证) 提交于 2019-12-03 00:39:02
　　2013年2月11号，NASA 成功发射了 Landsat 8 卫星，Landsat 8 上携带有两个主要载荷：OLI 和 TIRS 。其中 OLI（全称：Operational Land Imager ，陆地成像仪）由卡罗拉多州的鲍尔航天技术公司研制；TIRS（全称：Thermal Infrared Sensor，热红外传感器），由 NASA 的戈达德太空飞行中心研制。 OLI 陆地成像仪包括 9 个波段，空间分辨率为 30 米，其中包括一个 15 米的全色波段，成像宽幅为 185 x 185 km。 具体的 Landsat 8 波段等相关信息这里就不进行详细的介绍了，百度百科（ landsat8 地理空间数据云 美国地质勘探局官网 （USGS）获取。接下来就让我们步入正题： 　　4、在这里我就那阜阳市为例，进项遥感影像下载。在【高级搜索】弹窗中，我们需要对所下载的影像进行搜索，点击【数据集】，在弹出的小窗口中选择需要下载的卫星产品，在这里我选择Landsat 8 OLI_TIRS 卫星数字产品，选择好后点击【确定】；然后在【行政区】中选择所要下载影像所在的地区，选择好后地图会自动选择好地区；在【时间范围】中选择所要下载的影像时间（也可不选）；点击【搜索】后，在地图中会显示所有含有这个行政区范围的影像，如图所示： 　　5、点击行政区上面所要下载的缩略图

How to iterate over and download each image in an image collection from the Google Earth Engine python api

由 大憨熊 提交于 2019-12-01 01:06:38
I am new to google earth engine and was trying to understand how to use the Google Earth Engine python api. I can create an image collection, but apparently the getdownloadurl() method operates only on individual images. So I am trying to understand how to iterate over and download all of the images in the collection. Here is my basic code. I broke it out in great detail for some other work I am doing. import ee ee.Initialize() col = ee.ImageCollection('LANDSAT/LC08/C01/T1') col.filterDate('1/1/2015', '4/30/2015') pt = ee.Geometry.Point([-2.40986111110000012, 26.76033333330000019]) buff = pt
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