Asian Elephant observations

The dataset was derived with the *rgbif* R library by first using the function *occ_search()* and then filtering those rows which were considered bad data in this case, meaning the coordinates were not within Asia, and the column acceptedScientificName was not a name. The relevant rows of code start [here](https://github.com/tts/asianelephants/blob/main/preparedata.R#L13).

本数据集基于rgbif R库构建生成：首先调用occ_search()函数获取数据，随后对数据行进行筛选，剔除本研究中定义的劣质数据——具体包括坐标未处于亚洲范围内，以及acceptedScientificName字段非有效物种名称的数据行。相关代码的起始行位于[此处](https://github.com/tts/asianelephants/blob/main/preparedata.R#L13)。