On 05/05/2018 09:11 AM, Zhao Yidong wrote:
The Point I send into the function locates in the reference space ( [-1,
1]x[-1, 1] ),
By the way, in deal.II the reference cell is [0,1]x[0,1]. So even bilinear
shape functions will be negative if you evaluate them at (-1,-1), for example.
Best
W.
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Wolfgang Bangerth email: [email protected]
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