Errors with Continuity non-parametric SFH

[smlower]

I am using the Flexible Continuity SFH and run into an error when generating the SFRs with FSPS:

File "/home/s.lower/anaconda3/lib/python3.6/site-packages/fsps-0.3.0-py3.6-linux-x86_64.egg/fsps/fsps.py", line 871, in set_tabular_sfh

assert np.all(age[1:] > age[:-1]), "Ages must be increasing." AssertionError: Ages must be increasing.

Here is the photometry being used as well as the param_file. The galaxy is at redshift 0. I am using emcee v.2.2.1 and scipy v.1.2.1.

[smlower]

As a follow up, with the fixed time bin continuity SFH, prospector can run the fits, but the derived stellar masses seem to be fixed at 1e12 solar masses (i.e. the walkers do not deviate from 1e12 throughout the iterations).

[bd-j]

There are problems with the implementation of the Flexible Continuity SFH in the TemplateLibrary that will be a little tricky to fix, so I'd suggest skipping that for now.

If you look at the default "continuity_sfh" parameters -- i.e. via TemplateLibrary.describe("continuity_sfh") -- the prior for logmass is restricted to 7-12, so the sampler is getting stuck at the upper limit of the prior. You can shift this prior range by hand model_params["logmass"]["prior"] = priors.TopHat(mini=10, maxi=14). If you still run up against the prior it suggests a units or distance/normalization issue.

[smlower]

Ah - entirely obvious now with the fixed time bin issue (I was mixed up with how the Dirichlet SFH priors were set up). Thanks!

[bd-j]

I've noted the flex_continuity problem in a separate issue, so I'll close this since the other problem is resolved.