# Time vs. slowness

**URL:** https://discourse.obspy.org/t/time-vs-slowness/1556
**Category:** Related: rf
**Created:** [November 17, 2022, 11:37am UTC](https://discourse.obspy.org/t/time-vs-slowness/1556 "2022-11-17T11:37:18Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Qian](https://discourse.obspy.org/letter_avatar_proxy/v4/letter/q/b782af/32.png) [@Qian](https://discourse.obspy.org/u/Qian)
#### Post date: [November 17, 2022, 11:37am UTC](https://discourse.obspy.org/t/time-vs-slowness/1556/1 "2022-11-17T11:37:18Z")

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![q](https://discourse.obspy.org/uploads/default/original/1X/f11df0a99034d7fcbcc6c8941cd9b73cc323f64e.png)

Hi Mr. Tom Richter.

I am working with your scripts to generate stacks of RF. I want to generate a stacked section, but instead of time vs. distance, I want to plot time vs. slowness (as in the figure). Do you thing that it could be done using: get\_profile\_boxes(latlon, 0, slowness, width=400)?

Do you think it is feasible to do PRF and SRF with short period instruments?

Cheers!

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### Author: ![trichter](https://discourse.obspy.org/user_avatar/discourse.obspy.org/trichter/32/226_2.png) [@trichter](https://discourse.obspy.org/u/trichter)
#### Post date: [November 18, 2022, 1:17pm UTC](https://discourse.obspy.org/t/time-vs-slowness/1556/2 "2022-11-18T13:17:23Z")

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Hi,

unfortunately no. It is not possible to plot out of the box a profile versus slowness instead of distance. Your picture also shows a migrated section. A migration code is not yet included in the package.

What is the corner frequency/period of your instruments? I think a corner period above 1s might be OK.

Best