Computer code and datasets for reproducing the figures about the effect of sample size of leaf osmotic potential on its association with cotton yield

Computer code and data files for reproducing the figures of the manuscript entitled "Does sample size of leaf osmotic potential significantly affect the evidence of its association with cotton yield?" by X. Dong, D. A. Mott, Q. Zhou, and B. M. McKnight. Journal of Arid Emnvironments, 229 (2025) 105387. https://doi.org/10.1016/j.jaridenv.2025.105387 Figure 1 can be reproduced using gnuplot code "ssize_1.txt" and dataset "ssize_1.csv". Figures 2-3 can be reproduced using Minitab macro "ctleaf_1.mac" and data file "Sample_size_OP.csv". To run the macro, the contents of the data file "Sample_size_OP.csv" must first be copied into the current Minitab Worksheet.