GEE reduceResolution
时间: 2023-08-15 13:13:45 浏览: 156
gee计算遥感生态指数代码
GEE (Google Earth Engine) is a cloud-based platform that allows users to analyze and visualize geospatial data. The `reduceResolution` function in GEE is used to aggregate or reduce the resolution of an image or a raster dataset.
The `reduceResolution` function takes several parameters, including the reducer type (e.g., mean, sum, max), the scale (pixel size) at which to aggregate the data, and an optional geometry to define the region of interest.
Here's an example of how to use `reduceResolution` in GEE:
```javascript
// Load an image
var image = ee.Image('image_id');
// Reduce the resolution of the image
var reducedImage = image.reduceResolution({
reducer: ee.Reducer.mean(),
maxPixels: 1024,
bestEffort: true
});
// Display the reduced resolution image
Map.addLayer(reducedImage);
```
In this example, we load an image and then use the `reduceResolution` function to compute the mean value of pixels within a certain scale. The `maxPixels` parameter limits the number of pixels processed, and `bestEffort` allows for an approximate result if needed.
Please note that this is a simplified explanation, and there are more advanced options and considerations when using `reduceResolution` in GEE. It's always a good idea to consult the official documentation or additional resources for more in-depth information.
阅读全文