12/2/16

Physical trace on map from GPS track data

gps trackWith more and more people carrying personal tracking devices, a wealth of personal information is being collected that can be visualized or physicalized in different ways. The geospatial data that all of our phones – and more and more watches – collect is particularly amenable to rendering into physicalizations.

Below is a model of the path I took a few months ago as I ran a few errands around my home on Aquidneck Island. I made two stops and intentionally took a route that formed a loop with no overlapping segments. Continue reading

10/30/15

Elevation map of sea surface temperature shows Gulf Stream

Here is ansnapshot00other 3D map. This one shows differences in sea surface temperature (SST) along the East Coast of the U.S. The elevation differences highlights the Gulf Stream, a surface current that flows north along the western edge of the North Atlantic, transporting warm water northward from the tropics.

 

Continue reading

09/1/15

Napoleon’s march in 3d

minard1xI’ve been thinking about creating a 3D model of Minard’s famous chart depicting Napoleon’s 1812 invasion of Russia for quite a while. I finally gave it a shot over the weekend.

I could not be happier with the results. The first person I showed the model to said that she never really understood what Minard’s chart was showing until she saw it in 3D. Continue reading

08/31/15

More Wave Interferences Models

DSC_0078 The wave interference models I shared a few months ago followed two dimensional waves over time. (x and z axes represented space and the y axis represented time. As an extension of this work, I’ve started creating models of interaction patterns formed by circular waves.

The models in this post are snapshots showing interaction pattern formed by two longitudinal waves propagating over time.

Continue reading

06/30/15

Physical representation of a record breaking month of rain

AHPSMaypptdiffAccording to NOAA, this past May was the wettest month on record for the the US. The distribution of rain was not uniform. Parts of the central US received 2 to 3 times as much rain as usual while precipitation on the most of the East and West coasts was below average. Continue reading

07/24/14

The challenge of using area to communicate values in visualizations

Bubble charts are a popular way to present quantitative data. Often the area of the circles in the bubble chart are used to encode the value of a parameter. The larger the value, the greater the area, the bigger the circle. This makes intuitive sense and can be quite effective for rough comparisons. However, it is important to understand that we are not very good at estimating area and  these representations distorts the data because we are not very good at estimating area.
Continue reading

05/4/13

Carbon saving from existing federal policy is not good enough

The US Energy Information Administration’s April 30th Today In Energy post presented a graph similar to the one shown here. The figure compares CO2 emissions with and without the extension of policies that encourage conservation and promote low-carbon energy production. The figure shows that extending existing policies (orange line) reduces CO2 emissions relative to the reference, no extension case (blue line).
Continue reading