Blackfriars Bridge is the only bridge in London to have a direct north south axis. The axial model explores this notion further by depicting the relationships between the differing axis which surround the site. Over the coming few days I will look to investigate axial lines against isovist grids, both of which will heavily influence the parameters I have to work between. Both were recently outlined by Lydia Heard on the city walker website;
'Axial lines should be used for intelligibility, global properties and movement; isovists for static local uses of space. Isovist grids, or visibility graphs, provide output that looks similar to that of axial line maps, but they really are measuring different things. Axial lines predict movement, or movement choices, which require some conscious thought. Isovists measure and predict behaviours which are more dependent upon environmental qualities, or perception and awareness'.
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