# obspy.realtime.rttrace.RtTrace.trim

`RtTrace.``trim`(starttime=None, endtime=None, pad=False, nearest_sample=True, fill_value=None)

  Cut current trace to given start and end time.

  - Parameters: | starttime (`UTCDateTime`, optional) Specify the start time. endtime (`UTCDateTime`, optional) Specify the end time. pad (bool, optional) Gives the possibility to trim at time points outside the time frame of the original trace, filling the trace with the given `fill_value`. Defaults to `False`. nearest_sample (bool, optional) If set to `True`, the closest sample is selected, if set to `False`, the inner (next sample for a start time border, previous sample for an end time border) sample containing the time is selected. Defaults to `True`. Given the following trace containing 6 samples, “|” are the sample points, “A” is the requested starttime:
        |         |A        |         |       B |         |
        1         2         3         4         5         6
  `nearest_sample=True` will select samples 2-5, `nearest_sample=False` will select samples 3-4 only. fill_value (int, float or `None`, optional) Fill value for gaps. Defaults to `None`. Traces will be converted to NumPy masked arrays if no value is given and gaps are present.

  Note

  This operation is performed in place on the actual data arrays. The raw data is not accessible anymore afterwards. To keep your original data, use `copy()` to create a copy of your trace object.

  Example

      >>> tr = Trace(data=np.arange(0, 10))
      >>> tr.stats.delta = 1.0
      >>> t = tr.stats.starttime
      >>> tr.trim(t + 2.000001, t + 7.999999)
      <...Trace object at 0x...>
      >>> tr.data
      array([2, 3, 4, 5, 6, 7, 8])

### Thank you!

We would like to thank our contributors, whose efforts make this software what it is. These people have helped by writing code and documentation, and by testing. They have created and maintained this product, its associated libraries and applications, our build tools and our web sites.

#### Contributors

- Ackerley, Nick
- Allgeyer, Sebastien
- Ammon, Charles J.
- Antunes, Emanuel
- Arnarsson, Ólafur St.
- Bank, Markus
- Barsch, Robert
- Behr, Yannik
- Bernardi, Fabrizio
- Bernauer, Felix
- Bes de Berc, Maxime
- Beyreuther, Moritz
- Boltz, Shawn
- Bonaimé, Sébastien
- Carothers, Lloyd
- Chamberlain, Calum
- Chambers, Derrick
- Chen, Zhao
- Clark, Adam
- Danecek, Peter
- Egdorf, Sven
- Engels, Fabian
- Ermert, Laura
- Eulenfeld, Tom

- Fabbri, Tommaso
- Falco, Nicholas
- Fee, Jeremy
- Grellier, Clément
- Grunberg, Marc
- Hammer, Conny
- Heimann, Sebastian
- Heiniger, Lukas
- Hope, Gaute
- Igel, Heiner
- Inza, Adolfo
- Isken, Marius
- Ketchum, David
- Koymans, Mathijs
- Kremers, Simon
- Kress, Victor
- Krieger, Lars
- Krischer, Lion
- Kula, Damian
- Käufl, Paul
- Köhler, Andreas
- Lecocq, Thomas
- Leeman, John
- Legovini, Paride

- Lesage, Philippe
- Li, Yulin
- Lomax, Anthony
- Lopes, Rui L.
- MacCarthy, Jonathan
- Maggi, Alessia
- Martin, Henri
- Medlin, Andrew
- Megies, Tobias
- Meschede, Matthias
- Michelini, Alberto
- Miller, Nathaniel C.
- Morgenstern, Bernhard
- Nof, Ran Novitsky
- Panning, Mark P.
- Parker, Tom
- Pestourie, Romain
- Rapagnani, Giovanni
- Reyes, Celso
- Ringler, Adam
- Rothenhäusler, Nicolas
- Russo, Emiliano
- Sales de Andrade, Elliott

- Satriano, Claudio
- Saul, Joachim
- Scheingraber, Chris
- Schneider, Simon
- Sippl, Christian
- Snoke, Arthur
- Stange, Stefan
- Stähler, Simon C.
- Sullivan, Benjamin
- Tian, Dongdong
- Trabant, Chad
- Trani, Luca
- Uieda, Leonardo
- Walker, Andrew
- Walther, Marcus
- Wassermann, Joachim
- Williams, Mark C.
- Winkelman, Andrew
- Zaccarelli, Riccardo
- Zad, Seyed Kasra Hosseini
- Zhu, Lijun
- van Driel, Martin
- van Wijk, Kasper

#### Funds

ObsPy was partially funded by the

- German Science Foundation (DFG) via grant DFG IG 16/9-1
- German Ministry for Education and Research (BMBF), GEOTECHNOLOGIEN grant 03G0646H.
- NERA project (Network of European Research Infrastructures for Earthquake Risk Assessment and Mitigation) under the European Community's Seventh Framework Programme (FP7/2007-2013) grant agreement n° 262330
- Leibniz Institute for Applied Geophysics (LIAG)
- VERCE EU-FP7 project (no. 283543)