How to start with empty SparseMatrix and add rows

[cogmission1]

the code:

public Matrix insertRow(int i, Vector row) {

        if (i >= rows || i < 0) {

            throw new IndexOutOfBoundsException("Illegal row number, must be 0.." + (rows - 1));

        }

        Matrix result = blankOfShape(rows + 1, columns);

        for (int ii = 0; ii < i; ii++) {

            result.setRow(ii, getRow(ii));

        }

        result.setRow(i, row);

        for (int ii = i; ii < rows; ii++) {

            result.setRow(ii + 1, getRow(ii));

        }

        return result;

    }

Doesn't allow you to start with an empty matrix and add rows to it. I won't every know the size of my matrix upon creation!? :-)

Thanks,

David

[Vladimir Kostyukov]

Hello, David,

Do you mind filing a Github issue with a reproducer?

--

Thanks,

Vladimir Kostyukov