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Share a WKT configuration for Bonne projection in QGIS. For those needing to apply Bonne projection in QGIS, this reference may prove useful.

WKT File

PROJCRS["Bonne_WGS84",
    BASEGEOGCRS["WGS 84",
        DATUM["World Geodetic System 1984",
            ELLIPSOID["WGS 84",6378137,298.257223563,
                LENGTHUNIT["metre",1]],
            ID["EPSG",6326]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["Degree",0.0174532925199433]]],
    CONVERSION["unnamed",
        METHOD["Bonne",
            ID["EPSG",9827]],
        PARAMETER["latitude_of_origin",45,
            ANGLEUNIT["Degree",0.0174532925199433]],
        PARAMETER["Longitude of natural origin",0,
            ANGLEUNIT["Degree",0.0174532925199433],
            ID["EPSG",8802]]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1,
                ID["EPSG",9001]]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1,
                ID["EPSG",9001]]]]

Implementation Method

Reference: Adding Custom Projections in QGIS

The projected result after implementation is shown below:

Technical Issue

This WKT file was generated using Gemini. When modifying the longitude to 120 degrees, projection failed. We welcome input from community members who may identify the cause of this issue.