Processed data, analysis code, and editable project files supporting Figures 2–7 of "Evolution of oil-product spectroscopy and associated data-analysis algorithms: a bibliometric analysis and methodological synthesis of 23,386 publications (2011–2024)"

This dataset contains the processed data, editable Origin project files, VOSviewer map and network files, Python analysis and plotting scripts, verification reports, and final reference images supporting Figures 2–7 of a bibliometric analysis of 23,386 unique Web of Science records published from 2011 through 2024. The files support checks of annual and cumulative publication counts, logistic and Fisher–Pry analyses, country co-authorship, keyword co-occurrence, annual keyword frequencies, and normalized temporal changes in keyword frequency. Raw Web of Science records are not redistributed because access and reuse are governed by the applicable database licence.