Normalized Term Heatmaps


Enter a search term:
Max number to plot:

Search for terms in tweets to visualize the tweets' locations as a heatmap.

Use the mouse to pan and zoom the map.

Max number to plot controls the number of tweets sampled for plotting. Larger values will provide more accurate heatmaps, but increase plotting time.

Heatmaps in this view are normalized, showing how many tweets match the query compared to the total number of tweets from the same geographic area. The normalization is performed by dividing the Earth into into small rectangular sections and calculating the total number of tweets in each section. The weight of each tweet is then set to be a ratio to the total number of tweets in its section.

Only tweets that have an associated GPS location (about 10% of collected tweets, see the full paper for details) are plotted.