I have used
QGIS Vector->ResearchTools-> Vector Grid to create a 1 lat x 1 long grid for the landpolygon shapefile (from osm).
Now, I am interested in creating dynamic grid for the original landpolygon shapefile, i.e., close to the coastal-lines grid size should be .001 lat x .001 long and in the other areas existing grid size.
I need the coastal lines to be .001x.001 and in other areas 1x1. So the grid size is different in a single shape file.