A treemap recursively subdivides area into rectangles; the area of any node in the tree corresponds to its value. This example uses color to encode different packages of the Flare visualization toolkit. Treemap design invented by Ben Shneiderman. Squarified algorithm by Bruls, Huizing and van Wijk. Data courtesy Jeff Heer.
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--PART 2 | |
-- a. | |
# select all the tornadoes | |
SELECT * FROM tornados | |
# select the cartodb_id for all the tornadoes | |
SELECT cartodb_id FROM tornados | |
-- b. | |
# select the first tornado | |
SELECT * FROM tornados LIMIT 1 | |
# select the second tornado |
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