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- broken out of #1257 which was taken from the discussion of #1261
> Note that one thing I have not changed are the nH units for many parameters - they are given as 10^22 in the model.dat file but…
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In the following, the `guess` function gives a reasonable (but not great) result for the amplitude of the `powlaw1d` model (a Sherpa model), but completely ridiculous for the `xspowerlaw` model (XSPEC…
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**Describe the bug**
Installing from a fresh conda installation failed
**To Reproduce**
Steps to reproduce the behavior:
0. install miniconda and mamba
1. mamba create --name threeML -c conda…
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Found from adding typing rules (the error was that `mypy` noted that `len(self.channel)` was not guarded by a "but you may not have data" check):
```
% python
Python 3.11.4 (main, Jul 5 2023, 13:4…
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I am comparing XSPEC and Sherpa with a table model which, when I evaluate it directly, returns NaN values for some bins. It just so happens that these are all excluded apart from the first group, so w…
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Hello,
I recently updated the heasoft package (to version 6.32.1) on my Mac (12.6.6. Monterey). I am now noticing that when the heasoft is initialized in the bash, ixpeobssim fails.
Specifically…
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I wrote my XSPEC script to be entirely general, so I should finally allow people to take advantage of that (not that anyone uses my module but there you go...) and write the function that allows peopl…
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Many XSPEC models are now of the "C_" prefix variety - that is they are "native" C++ models. See https://heasarc.gsfc.nasa.gov/docs/xanadu/xspec/manual/node299.html#AppendixAddModels for a discussion …
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Hi!
I got a problem reading your model. My HEASOFT version is 6.31.1. Can you please provide some comments?
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Is this package still considered experimental? I would really like to switch astromodels over to this and have a common place to work on this as xspec continues to be a huge technical debt.