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Esri UC2013 . Technical Workshop .
Technical Workshop
2013 Esri International User Conference July 8–12, 2013 | San Diego, California
Making Beautiful Maps Aileen Buckley and Kenneth Field
Esri UC2013 . Technical Workshop .
Agenda
• Show you some maps we have made • Explain some of the methods we used to make them • Share some resources with you • Aileen:
- Bivariate choropleth maps - Temporal maps
• Ken: - Minard flow map of Napoleon's March on Moscow - Dasymetric mapping for the U.S. presidential election
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Aileen Buckley
Bivariate choropleth maps
Esri UC2013 . Technical Workshop .
What are bivariate choropleth maps?
• Maps that simultaneously show two variables using the choropleth map method - Choropleth maps use polygon fills to represent
quantitative values - Greek χώρο– + πλήθ[ος]
- “choro” (area/region) + “pleth” = quantity/increase
Making Beautiful Maps
Esri UC2013 . Technical Workshop . Making Beautiful Maps
Esri UC2013 . Technical Workshop .
What are the considerations when you use choropleth maps?
• Choropleth maps give the impression of - Uniformity in data within the data collection units - Abrupt breaks that occur at the unit boundaries
• Use quantitative values that are spatially intensive (do not depend on the size of the unit area)
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Learn more!
• ArcUser, Winter 2013
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
The purpose of multivariate mapping
• To display more than one variable simultaneously • To allow for estimation of the degree or spatial pattern of cross-correlation between variables
• Effectiveness of a method is related to readability and accurate representation of the data
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Cross-variable mapping
• Simultaneously depict magnitude of variables within homogeneous area for multiple map themes - Bivariate mapping - Trivariate mapping
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Early examples
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Early examples
Making Beautiful Maps
Esri UC2013 . Technical Workshop . http://www.census.gov/population/www/cen2000/atlas/pdf/censr01-103.pdf Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Cross-variable mapping
• Limitations - Because the number of
classes the human eye can distinguish is limited, cross-variable mapping is generally restricted to combinations of either two or three variables
- Appropriate symbol (color) selection is important for map readability
• Advantages - This technique is useful for
simultaneously displaying a few variables (two or three)
• Recommendations - It is often useful to also
provide separate maps of each of the variables shown on the bi- or trivariate map
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Two ways to do this in ArcMap
• Bivariate renderer - Use this to render the
data on-the-fly - Use this to create a live
legend (linked to the renderer)
• Bivariate script tool - Use this to calculate the
quantile classes in the feature class
- Use the Match to Symbols in a Style renderer
- Use the LegendMaker.mxd to make the legend
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Two ways to do this in ArcMap
Exploration • Bivariate renderer
- Use this to render the data on-the-fly
- Use this to create a live legend (linked to the renderer)
Presentation • Bivariate script tool
- Use this to calculate the quantile classes in the feature class
- Use the Match to Symbols in a Style renderer
- Use the LegendMaker.mxd to make the legend
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Bivariate renderer
• Download the .zip file and unzip it • Register the .dll
Making Beautiful Maps
Directory and name of the file
Esri UC2013 . Technical Workshop .
Styles – based on Brewer’s color research
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Brewer’s Color Schemes • Diverging color schemes
Brewer, Cynthia. 2005. Designing Better Maps, with permission form CaGIS and Esri Press
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
http://meyerweb.com/eric/tools/color-blend/ Making Beautiful Maps
Used to find intermediate colors
Esri UC2013 . Technical Workshop . Making Beautiful Maps
Esri UC2013 . Technical Workshop .
ArcMap styles
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
ArcMap styles
Making Beautiful Maps
Esri UC2013 . Technical Workshop .
Kenneth Field
Napoleon’s March on Moscow
Esri UC2013 . Technical Workshop .
Kenneth Field
Dasymetric mapping
Esri UC2013 . Technical Workshop .
Please fill out the session evaluation
First Offering ID: 1189 Second Offering ID: 2107
Online – www.esri.com/ucsessionsurveys Paper – pick up and put in drop box
Thank you…
Making Beautiful Maps
Esri UC2013 . Technical Workshop . Making Beautiful Maps