# Errata to “Relation-Aware Isosurface Extraction in Multifield Data”

Suthambhara
Vijay , IEEE

Pages: pp. 709-710

In the article titled “Relation-Aware Isosurface Extraction in Multifield Data,” the graphs in Figs. 8b, 8c, and 8d contain errors due to a bug in the implementation. The correct graphs, together with the corrections to the corresponding caption and text, appear below. In Section 4.4,

Figure    Fig. 8. Universe Simulation. (a) Isotherm statistics. (b) The profile of $\psi$ plotted with $A = \{ {\rm{TCf}}, {\rm{H+}} \}$ . Most of the area under the curve is centered around the ionization temperature of hydrogen. Similar results are seen in (c) when $A = \{ {\rm{TCf}}, {\rm{He+}} \}$ . (d) The profile of $\psi$ with $A = \{ {\rm{TCf}}, {\rm{H_2}} \}$ . Hydrogen in the temperature range 72-14,000K is in either cool or shocked states. (e) Isotherm of universe at 3,000K, which lies in the range where hydrogen is in shocked state. (f) Isotherm of universe at 14,500K which lies in the range where hydrogen and helium are ionized. (g) Isotherm of universe at 19,500K which lies in the range where hydrogen is already ionized and there is no other significant event.

• The sentence “The profile peaks in the temperature range 14,000-16,000 K, which is the temperature range in which hydrogen is ionized” should read as “The profile peaks at approximately 10,000K.”
• The sentences “We get similar results for ionized helium ${\rm{(A = \{TCf, He+\})}}$ . In fact, we get a sharper spike in the range 14,000-15,000 K ( Fig. 8c)” should be replaced by the sentence “We get similar results for ionized helium ${\rm{(A = \{TCf, He+\})}}$ ( Fig. 8c).”

## REFERENCES

• 1. S. Nagaraj, and V. Natarajan, “Relation-Aware Isosurface Extraction in Multifield Data,” IEEE Trans. Visualization and Computer Graphics, vol. 17, no. 2, pp. 182-191, Feb. 2011.