Hi,

Is it not possible to do call transposeInPlace() on an ArrayXXd type? For example, I have the following:

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Eigen::ArrayXXd m(3, 3);
m << 1,2,3,
     3,4,5,
     6,7,8;
m.transposeInPlace();


which results in the following compiler error:

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In file included from <snip>Eigen/Core:300:
<snip>Eigen/src/Core/Transpose.h:263:18: error: no member named
      'triangularView' in 'Eigen::Array<double, -1, -1, 0, -1, -1>'
      m.template triangularView<StrictlyUpper>().swap(m.transpose());


However, this approach works fine:

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m = m.transpose().eval();


I'm running 3.1.3 and compiling using Clang 3.2. Is this by design, a bug, or user/compiler error/misunderstanding?

Thanks!
Solan

our mistake, that's fixed (see below). In the meantime, m.matrix().transposeInPlace() should do the job.

https://bitbucket.org/eigen/eigen/commits/ba4230d2908e/
Changeset: ba4230d2908e
User: ggael
Date: 2013-06-24 13:35:13

https://bitbucket.org/eigen/eigen/commits/7232dbc34e1a/
Changeset: 7232dbc34e1a
Branch: 3.1
User: ggael
Date: 2013-06-24 13:35:13
Summary: fix compilation of ArrayBase::transposeInPlace
(transplanted from ba4230d2908e89e9b6af6e49d796415c70de0dd5)

Great! Thanks!