If the index shown on a choropleth map
has a composite nature and has been calculated on the basis of a set of subindices, the polylines from parallel coordinates may enable the users to get an insight into these subindices, and as demonstrated earlier, it can be straightforward.
We applied the same assumptions in our study to the design of class symbology on a tactile choropleth map
On a choropleth map
, those districts are larger and therefore attract more visual attention than is warranted by their limited population.
best demonstrate the changing prevalence of HIV among recruits from each district.
For the map outputs, two cartographical methods were used--diagram map and choropleth map
An isarithmic or choropleth map
can be used to map such data sets.
In all three conditions participants saw a two-second dynamic choropleth map
sequence consisting of an origin state and a destination state; however, the transition between scenes varied across conditions.
This work has the initial goal of comparing color highlighting to leader lines in two view combinations; choropleth map
linked to a scatterplot, and choropleth map
linked to a parallel coordinate plot (PCP).
We also recognize that the reliability of estimates may affect the robustness of choropleth map
To facilitate the interpretation of these potentially complex color and trend variations, bicomponent trend maps employ a "bicomponent trend matrix," which extends a standard bivariate choropleth map
legend by placing a time-series graph in each color cell of the legend to indicate how colors correspond to different trend types.
An expression of the magnitude of change is often presented through a choropleth map
that shows the percent of increase or decrease in population.
The choropleth map
is the timeless convention of representing population density from census counts.
However, in order to achieve visual and analytical comparability with population-based indicators, the temperature data from the thermal image was also aggregated to administrative boundaries (census tracts) and displayed as a choropleth map
Although the alternative problem is the traditional type of areal interpolation problem, three additional scenarios require the use of areal interpolation methods--including the overlay of a choropleth map
and an area class map, the overlay of two choropleth maps
, and the missing data problem in which values are known for some zones at a given scale but not for other zones (Mrozinski and Cromley 1999).
a change from a choropleth map
to a graduated circle map that should be reflected in all maps in a matrix) should be included.