Figures & data
Table 1. Keyword extraction set in the field of digital earth.
Table 2. Research subject categories selected through the web of science.
Figure 1. Publications by year from 1998 to 2015 (October).
Table 3. Top 20 countries in digital earth research by publications.
Figure 2. Comparison of publications among the top five countries.
Figure 3. Top 10 subject categories of journals in digital earth.
Table 4. Top 10 active journals related to digital earth.
Table 5. Citation of publications from 1998 to 2014.
Table 6. Top 20 cited papers on digital earth by author.
Table 7. Top 20 major research institutes in digital earth.
Figure 4. Collaboration network of the top 20 research institutes in digital earth.
Figure 5. Top 20 funding agencies with publications.
Table 8. Top 30 keywords with publication number.
Figure 6. (a) Keyword clustering and (b) research hotspots of digital earth by keywords.
