The x coordinate of the centre of mass is defined as \frac{∑(m_ix_i)}{∑(m_i)} where m_i is the biomass of the i^{th} branch and x_i is the x coordinate of the i^{th} branch. y and z coordinates are similarly computed. The centre of mass computation excludes branches to be pruned (ie: those whose toBePruned value is set to TRUE).
x协调中心的质量被定义为\frac{∑(m_ix_i)}{∑(m_i)}m_i是生物质的i^{th}分支和x_i是x的坐标i^{th}分支。 y和z坐标同样计算。中心的大规模的计算不包括的树枝修剪(即:那些toBePruned值设置为TRUE)。
用法----------Usage----------
centreOfMass(object)
参数----------Arguments----------
参数:object
A data frame of class vectors
一个数据框的类vectors
值----------Value----------
A vector holding x, y, z coordinates of the centre of mass
一个值保持x,y,z坐标中心的质量