Main Page/Research/Smart Maps/dwelling units

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Revision as of 00:59, 6 May 2010 by Phil Hurvitz (talk | contribs) (New page: Create a smart map raster that represents the count or density of dwelling units # decide on a cell size in advance ## if the cell size is 10 m, then the area of the cell is 100 m<sup>2<...)
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Create a smart map raster that represents the count or density of dwelling units

  1. decide on a cell size in advance
    1. if the cell size is 10 m, then the area of the cell is 100 m2 = 1076 ft2
  2. prepare parcel data with number of dwelling units per parcel (I used precision 18 scale 10)
  3. add a field for du_per_[cell] (e.g., du_per_10m_cell)
    1. calculate as dwelling_units * conversion / shape_area
      e.g., for 10 m2 cells, the conversion will be 1076
      to give the number of dwelling units per cell2
  4. convert to raster at 10 m spacing (32.808 ft), call it [du_per_cell]
  5. convert the raster to points
    now there is a data set of points where each point has the value of the number of dwelling units per cell/point
  6. simple density moving window analysis with 833 m (2734 ft) radius and population field = grid_code, units square meters