making beautiful maps - esri · 2013-08-01 · •show you some maps we have made • explain some...

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


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


Aileen Buckley

Bivariate choropleth maps


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


Esri UC2013 . Technical Workshop . Making Beautiful Maps


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)



Learn more!

• ArcUser, Winter 2013



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



Cross-variable mapping

• Simultaneously depict magnitude of variables within homogeneous area for multiple map themes - Bivariate mapping - Trivariate mapping



Early examples


Esri UC2013 . Technical Workshop . http://www.census.gov/population/www/cen2000/atlas/pdf/censr01-103.pdf Making Beautiful Maps


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



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



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



Bivariate renderer

• Download the .zip file and unzip it • Register the .dll


Directory and name of the file


Styles – based on Brewer’s color research



Brewer’s Color Schemes • Diverging color schemes

Brewer, Cynthia. 2005. Designing Better Maps, with permission form CaGIS and Esri Press



http://meyerweb.com/eric/tools/color-blend/ Making Beautiful Maps

Used to find intermediate colors


ArcMap styles



Kenneth Field

Napoleon’s March on Moscow


Kenneth Field

Dasymetric mapping


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 · 2013-08-01 · •show you some maps we have made • explain some...

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