# xarray.core.accessor_str.StringAccessor.isdecimal

#### StringAccessor.isdecimal()[[source]](https://github.com/pydata/xarray/blob/main/xarray/core/accessor_str.py#L926-L949)

Check whether all characters in each string are decimal.

* **Returns:**
  **isdecimal** ([array](https://numpy.org/doc/stable/glossary.html#term-array) of [`bool`](https://docs.python.org/3/builtins/functions.html#bool)) – Array of boolean values with the same shape as the original array.

### Examples

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```pycon
>>> da = xr.DataArray(["2.3", "123", "0"], dims="x")
>>> da
<xarray.DataArray (x: 3)> Size: 36B
array(['2.3', '123', '0'], dtype='<U3')
Dimensions without coordinates: x
>>> isdecimal = da.str.isdecimal()
>>> isdecimal
<xarray.DataArray (x: 3)> Size: 3B
array([False,  True,  True])
Dimensions without coordinates: x
```

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