从栅格数据创建斑块主题是创建一个新图层(主题)，每类像素簇被指定其面积和周长。

Create Patch theme Grid creates a new layer (theme), where each clump of like-classified pixels is assigned its own area and perimeter.

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从栅格数据创建斑块主题是创建一个新图层(主题)，每类像素簇被指定其面积和周长。

Create Patch theme from Grid creates a new layer (theme), where each clump of like-classified pixels is assigned its own area and perimeter.

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