Hi,

I'd like to initialize a dynamic boolean Array and set it to true. At the moment I'm using:

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MatrixXf tmp = MatrixXf::Zero(p, K);
Array<bool, Dynamic, Dynamic> active = (tmp.array() == 0);

Is there a better way?

Also, how do I set an entire row of that Array to false?

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active.row(0) = false;

doesn't work.

Thanks.

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typedef Array<bool, Dynamic, Dynamic> ArrayXXb;
ArrayXXb active = ArrayXXb::Constant(p, K, false);   // create a p-by-K array and fill it with 'false'
ArrayXXb active2; active2.setConstant(p, K, false);  // alternative method
active.row(0).setConstant(false);                    // set first row to 'false'


See the Quick reference guide for a list of useful commands, including these.

thanks!