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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

NMDS 分析的应力图

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