Figure 1 from: Irawan D, Priyambodho A, Rachmi C, Wibowo D, Fahmi A (2016) Bibliometric study to assist research topic selection: a case from research design on Jakarta's groundwater (part 1). Research Ideas and Outcomes 2: e9841. https://doi.org/10.3897/rio.2.e9841

Figure 1 - Density map of the papers based on the key words (Red: dense paper population, green: less dense). Dataset is available as Suppl. material 1 (in Irawan et al. 2016).