create hexagonal grid with a central cell

Dear all, I want to create a n-tier hexagonal grid with a central cell. Could you please help. Best regards

[Tejas]

The following are some useful links that can help you:

1) A similar question was asked here .

2) File Exchange Submission - hexagonalGrid - creates hexagonal grid points starting from the origin.

>> pts = hexagonalGrid([0 0 12 12], [0 0], 2)
>> scatter(pts(:,1),pts(:,2))