UCR Star reveals Google Maps poor quality in Beijing, China (Or may be not!)

We used to hear stories about some mapping applications failing due to poor data quality. However, it makes a big difference when you find major failure of the most prevalent mapping application in the country with the biggest user base. The story is that while exploring some datasets in UCR Star, I found the following view of building in Beijing, China.

Visualize your ideas using Rasem

A major part of a researchers' work is to write papers and articles that describe their work and make posters and presentations to better communicate their ideas. We all believe that "A picture is worth a thousand words" and we are always looking for better ways to visualize our ideas. In this blog article, I present Rasem, a library that I built as I started my PhD and used it in many of my papers and presentation to build nice visualizations like the ones shown below.

HadoopViz: Extensible Visualization of Big Spatial Data

With huge sizes of spatial data, a common functionality that users are looking for is to visualize this data to see how it looks like. This gives users the power of quickly exploring new datasets with huge sizes. For example, the video below summarizes 1 trillion points that represent the temperature of every 1 km2 on the earth surface on every day from 2009 to 2014 (total of six years).