addCase                 Add observed case(s).
addDelauny              Add Delauny triangles.
addEuclideanPath        Add the path for the Euclidean distance between
                        cases and/or pumps.
addFrame                Add map border to plot.
addIndexCase            Highlight index case at 40 Broad Street.
addKernelDensity        Add 2D kernel density contours.
addLandmarks            Add landmarks to plot.
addMilePosts            Add distance or time based "mileposts" to a
                        walking neighborhood plot.
addNeighborhoodCases    Add observed cases by neighborhood.
addNeighborhoodEuclidean
                        Add expected Euclidean pump neighborhoods.
addNeighborhoodWalking
                        Add expected walking neighborhoods.
addPlaguePit            Add plague pit (Marshall Street).
addPump                 Add selected pump(s) to plot.
addRoads                Add all streets and roads to plot.
addSnow                 Adds Snow's graphical annotation of the Broad
                        Street pump walking neighborhood.
addVoronoi              Add Voronoi cells.
addWalkingPath          Add the shortest walking path between a
                        selected cases or pumps.
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: amend, augment and aid analysis of
                        John Snow's cholera map
classifierAudit         Test if case is orthogonal to segment.
deldirVertices          Extract vertices of Delauny triangles and
                        Dirichelet (Voronoi) tiles.
distanceTime            Convert distance to elapsed time.
euclideanPath           Compute path of the Euclidean distance between
                        cases and/or pumps.
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.
fixFatalities           Fix errors in Dodson and Tobler's digitization
                        of Snow's map.
landmark.squares        Centers of city squares.
landmarkData            Landmark data.
landmarks               Orthogonal projection of landmarks onto road
                        network.
mapRange                Compute xlim and ylim of Snow's map.
nearestPump             Compute shortest walking distances or paths.
neighborhoodData        Compute network graph of roads, cases and
                        pumps.
neighborhoodEuclidean   Compute Euclidean path pump neighborhoods.
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.
orthogonalProjection    Compute coordinates of orthogonal projection
                        from case to road segment.
pearsonResiduals        Compute Pearson Residuals (prototype)
plague.pit              Plague pit coordinates.
plot.classifier_audit   Plot result of classifierAudit().
plot.euclidean          Plot method for neighborhoodEuclidean().
plot.euclidean_path     Plot the path of the Euclidean distance between
                        cases and/or pumps.
plot.neighborhood_data
                        Plot method for neighborhoodData().
plot.profile_perspective
                        Plot method for profilePerspective().
plot.time_series        Plot aggregate time series data from Vestry
                        report.
plot.voronoi            Plot Voronoi neighborhoods.
plot.walking            Plot method for neighborhoodWalking().
plot.walking_path       Plot the walking path between selected cases
                        and/or pumps.
print.classifier_audit
                        Return result of classifierAudit().
print.euclidean         Print method for neighborhoodEuclidean().
print.euclidean_path    Print method for euclideanPath().
print.time_series       Print summary data for timeSeries().
print.voronoi           Print method for neighborhoodVoronoi().
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.
pumpLocator             Locate water pump by numerical ID.
pumps                   Dodson and Tobler's pump data with street name.
pumps.vestry            Vestry report pump 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.
segmentLength           Compute length of road segment.
segmentLocator          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.
simulateFatalities      Generate simulated fatalities.
snow.neighborhood       Snow neighborhood fatalities.
snowColors              Create a set of colors for pump neighborhoods.
snowMap                 Plot John Snow's cholera map.
snowNeighborhood        Plotting data for Snow's graphical annotation
                        of the Broad Street pump neighborhood.
streetHighlight         Highlight road by name.
streetLength            Compute length of selected street.
streetNameLocator       Locate road by name.
streetNumberLocator     Locate road by numerical ID.
timeSeries              Aggregate time series fatality data from the
                        Vestry report.
unitMeter               Convert nominal map distance to meters or
                        yards.
unstackFatalities       Unstack "stacks" in Snow's cholera map.
walkingPath             Compute the shortest walking path between cases
                        and/or pumps.
