# Saving multiple functions in one file to visualize it

**URL:** <https://fenicsproject.discourse.group/t/saving-multiple-functions-in-one-file-to-visualize-it/5542>\
**Category:** I/O\
**Created:** [April 8, 2021, 6:16pm UTC](https://fenicsproject.discourse.group/t/saving-multiple-functions-in-one-file-to-visualize-it/5542 "2021-04-08T18:16:03Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![bhaveshshrimali](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/bhaveshshrimali/32/124_2.png) [@bhaveshshrimali](https://fenicsproject.discourse.group/u/bhaveshshrimali)\
**Post date:** [April 8, 2021, 6:34pm UTC](https://fenicsproject.discourse.group/t/saving-multiple-functions-in-one-file-to-visualize-it/5542/2 "2021-04-08T18:34:25Z")

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> I’d like to visualize multiple functions using a single xdmf file

Try

```python3
with XDMFFile(MPI.comm_world, 'filename.xdmf') as file:
    file.parameters.update(
    {
        "functions_share_mesh": True,
        "rewrite_function_mesh": False
    })
    file.write(u, 0.)
    file.write(rho, 0.)

```

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