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ee.Image.atan2
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计算 image1 和 image2 中每对匹配波段的二维向量 [x, y] 所形成的角度。如果 image1 或 image2 只有一个波段,则会将其与另一张图片中的所有波段进行比较。如果图片具有相同数量的波段,但名称不同,则会按自然顺序成对使用。输出波段的命名方式为:如果两个输入的长度不同,则以较长的输入命名;如果长度相同,则以 image1 的顺序命名。输出像素的类型为浮点型。
用法 | 返回 |
---|
Image.atan2(image2) | 图片 |
参数 | 类型 | 详细信息 |
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此:image1 | 图片 | 从中获取左操作数波段的映像。 |
image2 | 图片 | 从中获取右操作数波段的映像。 |
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最后更新时间 (UTC):2025-07-26。
[null,null,["最后更新时间 (UTC):2025-07-26。"],[[["\u003cp\u003eCalculates the angle between two 2D vectors represented by corresponding band pairs from two input images.\u003c/p\u003e\n"],["\u003cp\u003eIf one image has a single band, it's compared against all bands of the other image; if both images have the same number of bands, they're compared pairwise.\u003c/p\u003e\n"],["\u003cp\u003eOutput image bands are named based on the input with more bands, prioritizing the first image's band names if band counts are equal.\u003c/p\u003e\n"],["\u003cp\u003eThe resulting image contains pixel values representing the calculated angles in floating-point format.\u003c/p\u003e\n"]]],[],null,["# ee.Image.atan2\n\nCalculates the angle formed by the 2D vector \\[x, y\\] for each matched pair of bands in image1 and image2. If either image1 or image2 has only 1 band, then it is used against all the bands in the other image. If the images have the same number of bands, but not the same names, they're used pairwise in the natural order. The output bands are named for the longer of the two inputs, or if they're equal in length, in image1's order. The type of the output pixels is float.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------|---------|\n| Image.atan2`(image2)` | Image |\n\n| Argument | Type | Details |\n|----------------|-------|---------------------------------------------------------|\n| this: `image1` | Image | The image from which the left operand bands are taken. |\n| `image2` | Image | The image from which the right operand bands are taken. |"]]