显示数据集必须有一个有效的投影

Hello @sun2001 and welcome to the forums!

This error message is stating that your data need to have a projection defined. The most likely cause of this is that this input file does not have any spatial reference defined at all.

It is also possible that this input has a projection, but it’s a less commonly used one, but this is very unlikely.

Let us know how it goes,
James

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