Simulations under CR and DD models - part 1

First of two batches of .RData files of the trees simulation under the CR and DD models and the R-script that generated both batches.本数据集包含基于CR模型与DD模型的树木模拟实验所生成的两批.RData文件中的第一批，以及用于生成这两批文件的R脚本。