Tools are provided to compute metrics of formatted strings
    and to check the availability of a font.  Another set of functions is
    provided to support the collection of fonts from 'Google Fonts' in a
    cache. Their use is simple within 'R Markdown' documents and 'shiny'
    applications but also with graphic productions generated with the
    'ggiraph', 'ragg' and 'svglite' packages or with tabular productions
    from the 'flextable' package.

Detecting spatial associations via spatial stratified heterogeneity, accounting for spatial dependencies, interpretability, complex interactions, and robust stratification. In addition, it supports the spatial stratified heterogeneity family described in Lv et al. (2025)<doi:10.1111/tgis.70032>.

Interfaces GAMS data (*.gdx) files with 'data.table's using the GAMS R package 'gdxrrw'. The 'gdxrrw' package is available on the GAMS wiki: <https://support.gams.com/doku.php?id=gdxrrw:interfacing_gams_and_r>.

Some tools for developing general equilibrium models and some general equilibrium models. These models can be used for teaching economic theory and are built by the methods of new structural economics (see LI Wu, 2019, ISBN: 9787521804225, General Equilibrium and Structural Dynamics: Perspectives of New Structural Economics. Beijing: Economic Science Press). The model form and mathematical methods can be traced back to J. von Neumann (1945, A Model of General Economic Equilibrium. The Review of Economic Studies, 13. pp. 1-9), J. G. Kemeny, O. Morgenstern and G. L. Thompson (1956, A Generalization of the von Neumann Model of an Expanding Economy, Econometrica, 24, pp. 115-135) et al. By the way, J. G. Kemeny is a co-inventor of the computer language BASIC.

Implements common geostatistical methods in a clean, straightforward, efficient manner. The methods are discussed in Schabenberger and Gotway (2004, <ISBN:9781584883227>) and Waller and Gotway (2004, <ISBN:9780471387718>).

Evaluate and validate the Geboes score for histological assessment
  of inflammation in ulcerative colitis.  The original Geboes score from Geboes,
  et al. (2000) <doi:10.1136/gut.47.3.404>, binary version from Li, et al.
  (2019) <doi:10.1093/ecco-jcc/jjz022>, and continuous version from Magro, et
  al. (2020) <doi:10.1093/ecco-jcc/jjz123> are all described and implemented.