issue_comments: 757791198

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https://github.com/pydata/xarray/issues/4784#issuecomment-757791198 https://api.github.com/repos/pydata/xarray/issues/4784 757791198 MDEyOklzc3VlQ29tbWVudDc1Nzc5MTE5OA== 10194086 2021-01-11T09:27:49Z 2021-01-11T09:27:49Z MEMBER

The scale factor is already a string in img.attrs

```python img.attrs["scale_factor"]

returns '0.0001'

```

The attrs are assigned without making any change

https://github.com/pydata/xarray/blob/5296ed18272a856d478fbbb3d3253205508d1c2d/xarray/backends/rasterio_.py#L337

So I think there is nothing going "wrong" - but maybe they should be converted anyways? I am not familiar with tif files - do they follow cf-conventions? Can they save meta only as string? Or is that wrong in your source file?

There is also

python img.attrs["scales"] (0.0001,)

https://github.com/pydata/xarray/blob/5296ed18272a856d478fbbb3d3253205508d1c2d/xarray/backends/rasterio_.py#L310

 
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