Hi,

I am using Eigen numerical library with Netbeans IDE to develop my code. As I worked through the examples I noticed some of the functions are not recognized by Netbeans. For instance:

1) When I want to set the elements of a 3by3 matrix to random numbers:

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 MatrixXd mm = MatrixXd::Random(3, 3);

The project compiles and runs fine, however NetBeans displays an error next to the line: Unable to resolve identifier Random.

2) Or when reading the size of a vector:

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int n = boundary.size();  // boundary is of type VectorXd

Again the project compiles fine, however Netbeans issues the same error again next to this line of code : Unable to resolve identifier size.



In the case of 1) I could solve the problem by writing:

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MatrixXd mm(3,3);
 mm.setRandom();

However in case of 2) I couldn't find an alternative function.

My question is: Why are certain functions of Eigen not identified by my IDE (Netbeans)? <- Is there something wrong with my installation of Eigen (I have installed Eigen on my Ubuntu 13.10 using cmake into the default directory (usr/local/include/eigen3/Eigen)) Or am I missing some settings in Netbeans?

Thank you for your help!

Kind regards,
Jurij Sodja

NetBeans's C++ parser is probably not perfect. Moreover in case of templates the IDE also has to instantiate them to resolve identifiers.

Hi!

Thank you for a bit of explanation!

In the mean time I have found out, that if I define the following in the beginning of the file:

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typedef MatrixBase<MatrixXd> MXD;

I can access the methods like Random() or random in the following manner:

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MatrixXd X = MXD::Constant(nely, nelx, volfrac);

Could you please explain a bit more by what you mean:

ggael wrote:in case of templates the IDE also has to instantiate them to resolve identifiers.

Can I configure NetBeans to do so? Or would you recommend some other IDE (like eclipse)?

Thank you very much for your help!

Best!
Jurij