The method aims to identify important factors in screening experiments by aggregation over random models as studied in Singh and Stufken (2022) <doi:10.48550/arXiv.2205.13497>. This package provides functions to run the Gauss-Dantzig selector on screening experiments when interactions may be affecting the response. Currently, all functions require each factor to be at two levels coded as +1 and -1.

Compute text metrics (width, ascent, descent) using 'Cairo'
    and 'FreeType', independently of the active graphic device. Font
    lookup is delegated to 'systemfonts'. Additional utilities let users
    register 'Google Fonts' or bundled 'Liberation' fonts, check font
    availability, and assemble 'htmlDependency' objects so that fonts are
    correctly embedded in 'Shiny' applications, 'R Markdown' documents,
    and 'htmlwidgets' outputs such as 'ggiraph'.

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>.

Read and write 'GDX' files ('GAMS' data exchange) and convert
    parameters, sets and variables to data frames. Backed by the
    'GAMS'-maintained 'gamstransfer' package; no compiled code is shipped.
    See <https://www.gams.com/latest/docs/UG_GDX.html> for the 'GDX' format.

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.