Chain-of-programming (CoP): empowering large language models for geospatial code generation task. - Hou, Shuyang; Jiao, Haoyue; Shen, Zhangxiao; Liang, Jianyuan; Zhao, Anqi; Zhang, Xiaopu; Wang, Jianxun; Wu, Huayi (International Journal of Digital Earth, 2025)