Obtaining data used in Sherpa threads
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Sherpa Threads (CIAO 4.17 Sherpa)
Overview
Synopsis:
This thread lists instructions for obtaining the data used in each of the Sherpa thread examples.
Last Update: 10 Dec 2024 - reviewed for CIAO 4.17: Sherpa start-up banner updated
Getting Started
All the data used in the Sherpa threads are available in sherpa.tar.gz (243 MB tarred & gzipped). Download and unpack this file before continuing.
Move to the directory that contains the thread data:
unix% cd /localpath/sherpa unix% ls -1 2dpsf aciss_grating_sim aciss_sim basic confidence_manual expmap fakeit grating grating_hrcsletg guide lines_acishetg lines_acisletg manual_source pha_intro pha_regroup pileup plot pyblocxs setplot_manual simspec simultaneous sourceandbg spatial spectra user_model
Locate and move into the sub-directory for your specific thread and start a Sherpa session; e.g. for the Introduction to Fitting PHA Spectra thread:
unix% cd pha_intro unix% sherpa ----------------------------------------------------- Welcome to Sherpa: CXC's Modeling and Fitting Package ----------------------------------------------------- Sherpa 4.17.0 Python 3.11.6 | packaged by conda-forge | (main, Oct 3 2023, 10:40:35) [GCC 12.3.0] Type 'copyright', 'credits' or 'license' for more information IPython 8.30.0 -- An enhanced Interactive Python. Type '?' for help. IPython profile: sherpa Using matplotlib backend: tkagg sherpa> pwd /localpath/sherpa/pha_intro
The contents of this directory may be examined with the Unix command ls:
sherpa> ls 3c273.arf 3c273.rmf 3c273.pi 3c273_bg.pi
To view the contents of an ASCII file from within Sherpa, the Unix command more may be used; e.g.,:
sherpa> !more /localpath/sherpa/basic/data1.dat 0.5 1.6454 0.04114 1.5 1.7236 0.04114 2.5 1.9472 0.04114 3.5 2.2348 0.04114 4.5 2.6187 0.04114 5.5 2.8642 0.04114 6.5 3.1263 0.04114 7.5 3.2073 0.04114 8.5 3.2852 0.04114 9.5 3.3092 0.04114 10.5 3.4496 0.04114
Note that Unix commands issued in Sherpa must be preceded by the '!' symbol, except for cd, ls, and pwd.
History
| 14 Jan 2005 | reviewed for CIAO 3.2: no changes |
| 07 Jul 2005 | updated tarfile information |
| 21 Dec 2005 | reviewed for CIAO 3.3: no changes |
| 09 Feb 2006 | updated tarfile information |
| 01 Dec 2006 | updated for CIAO 3.4: Sherpa version |
| 09 Dec 2008 | updated for Sherpa 4.1 |
| 17 Dec 2009 | updated for CIAO 4.2; contents of sherpa.tar.gz updated |
| 13 Jul 2010 | contents of tarfile updated for CIAO 4.2 Sherpa v2 |
| 15 Dec 2010 | Sherpa start-up banner updated for CIAO 4.3 |
| 15 Dec 2011 | reviewed for CIAO 4.4: Sherpa start-up banner updated; new 'pyblocxs' directory added to Sherpa thread data tarfile |
| 13 Dec 2012 | reviewed for CIAO 4.5: Sherpa start-up banner updated |
| 03 Dec 2013 | reviewed for CIAO 4.6: Sherpa start-up banner updated |
| 25 Mar 2015 | reviewed for CIAO 4.7: Sherpa start-up banner updated |
| 14 Dec 2015 | updated for CIAO 4.8; no content change. |
| 06 Dec 2016 | reviewed for CIAO 4.9: Sherpa start-up banner updated |
| 12 Apr 2018 | updated for CIAO 4.10; no content change. |
| 11 Dec 2018 | updated for CIAO 4.11; no content change. |
| 29 Nov 2022 | reviewed for CIAO 4.15: Sherpa start-up banner updated |
| 20 Nov 2023 | reviewed for CIAO 4.16: Sherpa start-up banner updated |
| 10 Dec 2024 | reviewed for CIAO 4.17: Sherpa start-up banner updated |