QGIS: Representation of Election Data using 2.5D
á Add Vector layer (your us_election shapefile) to QGIS.
á Project the layer (use Albers Equal Area Conic or choose another projection system). Use a projection that displays your columns well.
Double click on the us_election layer or right click to get Layer Properties.
á In the Style window pick 2.5D this time instead of Graduated.
The 2.5D symbology will extrude a third dimension of your polygons.
á For Height choose your attribute column (e.g., Trump or Clinton)
á You can perform mathematical operations on the height to accentuate the way your data is displayed (e.g., Trump/100000).
á Experiment with different colors/styles. You can choose to add a shadow (e.g., 0.25) but remember; each time you change something the display will have to render again.
á Experiment with angle and rotation. Angle is in the 2.5D window. Rotation is at the bottom of your map data view.
á The projected coordinate system will affect the angle of the pillars. Try different projections (e.g., mercury sinusoidal)
á Save the QGIS project file often, as the program may crash trying to render your map.
Symbolize your 2.5D map with a graduated color ramp. You can initiate this after the 2.5D map starts displaying. Choose the PerTrump or PerClinton (percent) data, and an appropriate classification method. The map will start redrawing again.
á When your map is fully rendered, select Save as Image in the Project menu. Save as a TIFF image and put the 48 states map in Illustrator.
á Add neat line, title, legend, and name. Include information about the projection, classification, and display method.
á Print to tabloid paper; upload png and pdf to your page.