---
description: Explore Ultralytics YOLO Docs for a deep understanding of log_scalars, on_batch_end & other callback utilities embedded in the tensorboard module.
keywords: Ultralytics, YOLO, documentation, callback utilities, log_scalars, on_batch_end, tensorboard
---

# Reference for `ultralytics/utils/callbacks/tensorboard.py`

!!! Note

    This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/tensorboard.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/tensorboard.py). If you spot a problem please help fix it by [contributing](/help/contributing.md) a [Pull Request](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/utils/callbacks/tensorboard.py) 🛠️. Thank you 🙏!

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## ::: ultralytics.utils.callbacks.tensorboard._log_scalars

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## ::: ultralytics.utils.callbacks.tensorboard._log_tensorboard_graph

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## ::: ultralytics.utils.callbacks.tensorboard.on_pretrain_routine_start

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## ::: ultralytics.utils.callbacks.tensorboard.on_train_start

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## ::: ultralytics.utils.callbacks.tensorboard.on_train_epoch_end

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## ::: ultralytics.utils.callbacks.tensorboard.on_fit_epoch_end

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