[ot-users] How to define a gradient implementation (for FORM analysis) ?

jerome.de-lauzon at bureauveritas.com jerome.de-lauzon at bureauveritas.com
Thu Jan 30 11:13:29 CET 2014

Hello everyone,

I work in Bureau Veritas Research Department and I've recently started to 
use OpenTURNS.

I want to perform a FORM analysis with a NumericalMathFunction I've 
defined using a python function (derived from the OpenTURNSPythonFunction, 
as explained in user manual). In my case, it is a polynomial function.

When I run the analysis, I get the following warning message:
WRN - You are using a default implementation for the gradient. Be careful, 
your computation can be severely wrong!

Does anyone know if it is possible to define a gradient implementation 
using a python function ?

Best regards,

Jérôme de LAUZON
Research Departement/ Hydro-Structure Section
Tél. +33 (0)1 55 24 75 13
Fax. +33 (0)1 55 24 70 26
jerome.de-lauzon at bureauveritas.com

BUREAU VERITAS - Marine & Offshore Division
67/71, Boulevard du Château - 92571 Neuilly-Sur-Seine Cdx - France

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