quality of information carrier attribute An information carrier that can be measured, observed, or logged. Munzner T. Visualization analysis and design. Boca Raton: CRC Press, Taylor & Francis Group, CRC Press is an imprint of the Taylor & Francis Group, an informa business; 2015. 404 p. (A.K. Peters visualization series). This is also called a 'channel' by T. Munzner. "A channel is a way to control the appearance of marks independent of the dimensionality of the goemetric primitive." T. Munzner, Visualization analysis and design. Boca Raton: CRC Press, Taylor & Francis Group, CRC Press is an imprint of the Taylor & Francis Group, an informa business, 2015. mark