Open Google Earth Engine (OEEL) - generate constant images in matrixUnit(...)

Commonly used constant image GEE codes:

In GEE, you can generate a constant image using:

  1. Use ee.Number to generate a numeric constant image:
var constantImage = ee.Image.constant(100);

This will generate an image with all pixel values ​​at 100.

  1. Use ee.Image.constant to generate an image with constant values:
var constantImage = ee.Image.constant({
  bands: ['constant_band'],
  value: 100
});

This will generate an image with a band called 'constant_band' where all pixels have a value of 100.

  1. Generate a constant image using spatial resolution and projection information:
var constantImage = ee.Image.constant(0)
  .toInt()
  .reproject({
    crs: 'EPSG:4326',
    scale: 30
  });

This will generate an integer image with all pixel values ​​0, using the WGS84 projection and a spatial resolution of 30 meters.

oeel.Array.matrixUnit(...)

oeel.Array.matrixUnit(n, m, i, j)

matrixUnit.

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転載: blog.csdn.net/qq_31988139/article/details/131364595