Chandra X-Ray Observatory
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Last modified: 28 September 2015

URL: http://cxc.harvard.edu/sherpa/bugs/get_draws.html

Bugs: get_draws


Bugs

ValueError: sigma is not positive definite

The get_draws command may return with the error message

ValueError: sigma is not positive definite

There is a bug in the code that is performing an extra check on the data that may cause this exception to be thrown for certain datasets.

There is no simple work around.


Last modified: 28 September 2015
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