var roi = /* color: #d63000 */ee.Geometry.Point([121.3664979892787, 37.45796001127996]);// Create a chart for SoilMoi100_200cm_inst trend in point 1.Map.centerObject(roi,7)var dataset = ee.ImageCollection('NASA/GLDAS/V021/NOAH/G025/T3H') .filterBounds(roi) .filterDate('2006-01-01', '2016-12-31') .select('SoilMoi100_200cm_inst');
var radius_lst = ee.List([250, 500, 1000, 1500, 2000]);
var colByRadius = ee.List(radius_lst).map(function (radius) {
var months = ee.List.sequence(1, 12); var start_year = 2006; var start_date = '2006-01-01'; var end_year = 2016; var end_date = '2016-12-31';
var years = ee.List.sequence( start_year, end_year);
var ptsbuff = ee.FeatureCollection(roi).map(function (radius, bounds) { return function(pt) { pt = ee.Feature(pt); return bounds ? pt.buffer(radius).bounds() : pt.buffer(radius); }; }(radius, false));
var byMonthYear = years.map(function (y) { return months.map(function(m) { var w = dataset.filter(ee.Filter.calendarRange(y, y, 'year')) .filter(ee.Filter.calendarRange(m, m, 'month')) .mean(); var pointMean = w.reduceRegion( {reducer:ee.Reducer.first(), geometry:ptsbuff, scale:500}); // set the dictionary as property and cast to an ee.Image, as setMulti returns an ee.Element. return ee.Feature(null).set("value", pointMean .get("SoilMoi100_200cm_inst")) .set("year",y) .set("month",m) .set("radius", radius);
}); }).flatten();
return byMonthYear;
}).flatten();
Export.table.toDrive({collection:ee.FeatureCollection(colByRadius), description:"csvExport"})
