# xarray.coding.variables.CFMaskCoder

### *class* xarray.coding.variables.CFMaskCoder(decode_times=False, decode_timedelta=False)[[source]](https://github.com/pydata/xarray/blob/main/xarray/coding/variables.py#L279-L440)

Mask or unmask fill values according to CF conventions.

#### \_\_init_\_(decode_times=False, decode_timedelta=False)[[source]](https://github.com/pydata/xarray/blob/main/xarray/coding/variables.py#L282-L288)

### Methods

| [`__init__`](#xarray.coding.variables.CFMaskCoder.__init__)([decode_times, decode_timedelta])   |                                                   |
|-----------------------------------------------------------------------------------------------|---------------------------------------------------|
| `decode`(variable[, name])                                                                    | Convert a decoded variable to an encoded variable |
| `encode`(variable[, name])                                                                    | Convert an encoded variable to a decoded variable |