# tf.keras.backend.set_image_data_format

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|---|---|
| [![](https://www.tensorflow.org/images/tf_logo_32px.png) TensorFlow 2 version](https://www.tensorflow.org/api_docs/python/tf/keras/backend/set_image_data_format) | [![](https://www.tensorflow.org/images/GitHub-Mark-32px.png) View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v1.15.0/tensorflow/python/keras/backend_config.py#L110-L126) |

Sets the value of the image data format convention.

#### View aliases


**Compat aliases for migration**

See
[Migration guide](https://www.tensorflow.org/guide/migrate) for
more details.

[`tf.compat.v1.keras.backend.set_image_data_format`](https://www.tensorflow.org/api_docs/python/tf/keras/backend/set_image_data_format), \`tf.compat.v2.keras.backend.set_image_data_format\`

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    tf.keras.backend.set_image_data_format(
        data_format
    )

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| ## Arguments ||
|---|---|
| `data_format` | string. `'channels_first'` or `'channels_last'`. |

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Example: `python from keras import backend as K K.image_data_format() >>>
'channels_first' K.set_image_data_format('channels_last')
K.image_data_format() >>> 'channels_last'`

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| ## Raises ||
|---|---|
| `ValueError` | In case of invalid `data_format` value. |

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