addCase                 Add observed case(s) to plot.
addDelaunay             Add Delaunay triangles.
addEuclideanPath        Add Euclidean path from case/landmark to
                        nearest or selected pump. (prototype)
addIndexCase            Highlight index case at 40 Broad Street.
addKernelDensity        Add 2D kernel density contours.
addLandmarkSquares      Add Golden and Soho Squares to plot.
addLandmarks            Add landmarks to plot.
addNeighborhoodCases    Add observed neighborhood cases.
addNeighborhoodEuclidean
                        Add expected Euclidean pump neighborhoods.
addNeighborhoodSnow     Adds Snow's graphical annotation of the Broad
                        Street pump walking neighborhood.
addNeighborhoodWalking
                        Add walking neighborhoods.
addPlaguePit            Add plague pit (Marshall Street).
addPump                 Add selected pump(s) to plot.
addRoads                Add all streets and roads to plot.
addVoronoi              Add Voronoi cells.
addWalkingPath          Add walking path from case/landmark to nearest
                        or selected pump. (prototype)
addWhitehead            Add Rev. Henry Whitehead's Broad Street pump
                        neighborhood.
anchor.case             Anchor or base case of each stack of
                        fatalities.
border                  Numeric IDs of line segments that create the
                        map's border frame.
caseLocator             Locate case by numerical ID.
cholera-package         cholera
euclideanPath           Compute Euclidean path coordinates from
                        observed case/landmark to nearest/selected
                        pump.
fatalities              Amended Dodson and Tobler's cholera data.
fatalities.address      "Unstacked" amended cholera data with address
                        as unit of observation.
fatalities.unstacked    "Unstacked" amended cholera fatalities data
                        with fatality as unit of observation.
frame.data              Map frame data c("x", "y") and c("lon", "lat").
frame.sample            Partitioned map frame points (segment
                        endpoints).
frame.segments          Dodson and Tobler's "Map Frame" street data
                        transformed into road segments.
isoVertices             Isochrone and isodistance vertices (prototype)
landmark.squares        Centers of city squares.
landmarks               Landmark coordinates.
latlong.ortho.addr      Orthogonal projection of observed address
                        (latlong) cases onto road network.
latlong.ortho.pump      Orthogonal projection of 13 original pumps
                        (latlong).
latlong.ortho.pump.vestry
                        Orthogonal projection of the 14 pumps from the
                        Vestry Report (latlong).
latlong.regular.cases   "Expected" cases (latlong).
latlong.sim.ortho.proj
                        Road "address" of simulated (i.e., "expected")
                        cases (latlong).
mapRange                Compute xlim and ylim of Snow's map.
meter.to.yard           Meter to yard conversion factor.
neighborhoodEuclidean   Compute Euclidean path pump neighborhoods.
neighborhoodSnow        Compute Snow's graphical annotation of Broad
                        Street pump neighborhood.
neighborhoodVoronoi     Compute Voronoi pump neighborhoods.
neighborhoodWalking     Compute walking path pump neighborhoods.
ortho.proj              Orthogonal projection of observed cases onto
                        road network.
ortho.proj.pump         Orthogonal projection of 13 original pumps.
ortho.proj.pump.vestry
                        Orthogonal projection of the 14 pumps from the
                        Vestry Report.
pearsonResiduals        Compute Pearson Residuals (prototype)
plague.pit              Plague pit coordinates.
plot.euclidean          Plot method for neighborhoodEuclidean().
plot.euclideanLatlong   Plot method for euclideanLatlong()
plot.euclidean_path     Plot the path of the Euclidean distance between
                        cases and/or pumps.
plot.iso_vertices       Plot method for isoVertices().
plot.profile_perspective
                        Plot method for profilePerspective().
plot.snow               Plot method for neighborhoodSnow().
plot.soho_graph         Plot method for sohoGraph().
plot.time_series        Plot aggregate time series data from Vestry
                        report.
plot.voronoi_latlong    Plot method for voronoiLatlong()
plot.voronoi_nominal    Plot Voronoi neighborhoods.
plot.walking            Plot method for neighborhoodWalking().
plot.walking_path       Plot the walking path between selected cases
                        and/or pumps.
print.euclidean         Print method for neighborhoodEuclidean().
print.euclideanLatlong
                        Print method for neighborhoodEuclidean(latlong
                        = TRUE).
print.euclidean_path    Print method for euclideanPath().
print.iso_vertices      Print method for isoVertices().
print.time_series       Print summary data for timeSeries().
print.voronoi_latlong   Print method for voronoiLatlong().
print.voronoi_nominal   Print method for voronoiNominal().
print.walking           Print method for neighborhoodWalking().
print.walking_path      Print method for walkingPath().
profile2D               2D Profile .
profile3D               3D Profile.
pumpCase                Extract numeric case IDs by pump neighborhood.
pumpData                Compute pump coordinates.
pumpFatalities          Compute fatalities by pump.
pumpLocator             Locate water pump by numerical ID.
pumps                   Dodson and Tobler's pump data with street name.
pumps.vestry            Vestry report pump data.
rd.sample               Sample of road intersections (segment
                        endpoints).
rectangle.filter        Rectangular filter data.
regular.cases           "Expected" cases.
road.segments           Dodson and Tobler's street data transformed
                        into road segments.
roadSegments            Reshape 'roads' data frame into 'road.segments'
                        data frame.
roads                   Dodson and Tobler's street data with appended
                        road names.
segmentHighlight        Highlight segment by ID.
segmentLocator          Plot/Locate road segment by ID.
sim.ortho.proj          Road "address" of simulated (i.e., "expected")
                        cases.
sim.pump.case           List of "simulated" fatalities grouped by
                        walking-distance pump neighborhood.
sim.walking.distance    Walking distance to Broad Street Pump (#7).
simulateFatalities      Project simulated fatalities onto road network
snow.neighborhood       Snow neighborhood fatalities.
snowColors              Create a set of colors for pump neighborhoods.
snowMap                 Plot John Snow's cholera map.
sohoGraph               Compute network graph of roads and embed cases,
                        landmarks and pumps (prototype).
streetHighlight         Highlight road by name.
streetLength            Compute length of selected street.
streetNameLocator       Locate street(s) by name(s).
streetNames             Street names (alphabetized).
streetNumberLocator     Locate street by its numerical ID.
summary.euclidean       Summary method for neighborhoodEuclidean().
summary.voronoi_nominal
                        Summary method for voronoiNominal().
tanakaContourPlot       Tanaka contour plot.
timeSeries              Aggregate time series fatality data from the
                        Vestry report.
unstackFatalities       Unstack "stacks" in Snow's cholera map.
voronoi.polygons        Coordinates of Voronoi polygon vertices for
                        original map.
voronoi.polygons.vestry
                        Coordinates of Voronoi polygon vertices for
                        Vestry Report map.
voronoiPolygons         Extract vertices of Delaunay triangles and
                        Dirichelet (Voronoi) tiles.
walkingPath             Compute walking path from case/landmark to
                        nearest or selected pump.
