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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.
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This is related to my attempts to improve our regrid code - e.g.
- #1482
- #1799
and other issues and PRs, but is a precursor to them (i.e. I strongly believe we need to answer this question …
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This is with XSPEC convolution models, but it should also apply for non-XSPEC cases. Probably only 1D as the 2D case "must" be supported, at least for the convolve-by-image rather than convolve-by-mod…
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I should say at the beginning that I've done my testing with the changes from https://github.com/xspec/xspec/issues/1917.
The stylesheet has the following content:
There are 7 global variables at …
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Suggestion from user:
One thing I wouldn’t mind having is the ability to change the boundaries of multiple parameters at once. Currently, if I’m not mistaken, you must change these a parameter at a…
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Lindsay has requested that this be a capability we enable in the long run.
In addition, a fittable scaling factor between different spectra to account for idiosyncrasies of the different instrument…
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In Sherpa we ignore the fluxError component, but we should probably support it for the small (?) number of models that use it.
It would complicate things - e.g. maybe we'd want to return some form …
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I'm fitting X-ray data (PHA) files, fitting just a constant:
```
load_data("pha2.gz")
load_arf(1, "leg_-1.arf.gz")
load_rmf(1, "leg_-1.rmf.gz")
set_analysis("wave")
ignore(None, 21.5)
ignore(22…
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In a chi^2 statistic, the goodness of fit can be derived analytically from the chi^2 value and the number of DOF. That's not true for many of our other statistics (cash, WSTAT, etc.). However, in prin…
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## Summary
Sometimes datasets have metadata associated with it that sets how a model is evaluated and I'm not aware of a good way to accommodate that in Sherpa. There are several ways around that, bu…