Dense Sensor Readings — Hexbin Plot Example

• The darkest hexagons trace a clear positive band — temperature and pressure rise together in this dataset.
• Density is highest in the middle of the range, where the sensor spent most of its time.
• The same 40 points as a scatter plot would already show overlap. At a few thousand points, hexbin becomes the only readable option.

Temperature,Pressure
18.2,1004
18.6,1006
19.1,1005
19.4,1008
19.8,1007
20.1,1009
20.4,1011
20.6,1010
20.9,1012
21.2,1011
21.4,1013
21.7,1014
22.0,1013
22.2,1015
22.5,1016
22.8,1015
23.1,1017
23.4,1018
18.9,1006
19.6,1008
20.2,1010
20.8,1011
21.5,1013
22.1,1014
22.7,1016
23.2,1017
19.3,1007
20.0,1009
20.7,1012
21.3,1012
22.4,1015
23.0,1016
19.9,1008
21.0,1011
21.9,1014
22.6,1015
20.5,1010
21.8,1013
22.3,1015
23.3,1018

Illustrative paired sensor readings. Replace with your own before publishing.