Calculates Euclidean distance between ent and the other entities across the samples (columns) in the data frame ent_data
计算ent和整个样本(列)的数据框ent_data其他实体之间的欧几里德距离
用法----------Usage----------
exp_calcEuclideanDist(ent_data, ent)
参数----------Arguments----------
参数:ent_data
a data frame of experimental data, according to exploRase conventions
的实验数据的数据框,根据exploRase公约
参数:ent
the id of an entity that is compared to the entities in ent_data
一个实体的ID进行比较的实体ent_data