Bug #1492
LogParabola flux method returns nan
| Status: | Closed | Start date: | 06/30/2015 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assigned To: | - | % Done: | 0% | |
| Category: | - | |||
| Target version: | - | |||
| Duration: |
Description
Running on gammalib v0.10.0 on Ubuntu 14.04 the following lines:
import gammalib as gl
crab = gl.GModels("/home/buehler/Code/gammalib/test/data/model_point_logparabola.xml”)
crab[“Crab"].spectral().flux(gl.GEnergy(1,“TeV"),gl.GEnergy(10,“TeV”))
results in:
+++ WARNING in GIntegral::romberg(1e+06, 1e+07, 5): Integration uncertainty nan exceeds absolute tolerance of nan after 21 iterations. Result -nan is inaccurate.
This was very likely the cause of the problem I reported in ctools Issue #1447 https://cta-redmine.irap.omp.eu/issues/1447
Recurrence
No recurrence.
History
#1
Updated by Knödlseder Jürgen over 8 years ago
Can you check whether the problem still exists on the actual code?
Michael has reported a similar problem (#1556) which was traced back to the problem of invalid references. Michael’s problem has been fixed.
#2
Updated by Buehler Rolf over 8 years ago
Running on Version: 1.1.0.dev (22 November 2015) the problem is gone (no warning appears and the returned value looks reasonable)
#3
Updated by Knödlseder Jürgen over 8 years ago
- Status changed from New to Closed
Thus close the issue.