我正在做一个非度量多维尺度分析。分析结果产生了两个收敛的解决方案,并且输出看起来都不错,但是当我制作压力图来检查数据时,我得到的 r 平方为 1,这是我以前从未见过的,并且在这意味着什么的文献。应力图将不包含在最终手稿中,否则输出和 ordiplot 看起来不错。有没有人遇到过这种情况或知道这可能意味着什么?我将在下面包含代码和后续图。
nmds.participant <- metaMDS(impact_dist, distance = "euclidian", k = 2, trymax = 50, autotransform = F)
nmds.participant
# Call:
# metaMDS(comm = impact_dist, distance = "euclidian", k = 2, trymax = 50, autotransform = F)
#
# global Multidimensional Scaling using monoMDS
#
# Data: impact_dist
# Distance: user supplied
#
# Dimensions: 2
# Stress: 7.216141e-16
# Stress type 1, weak ties
# Two convergent solutions found after 20 tries
# Scaling: centring, PC rotation
# Species: scores missing