在R或Rstudio中敲入代码出现警告:
install.packages("PCNM")
Warning in install.packages :
package ‘PCNM’ is not available (for R version 3.2.2)
后来在 R-Forge网站http://r-forge.r-project.org/R/?group_id=195找到PCNM程序包,但网站页面显示如下:
MEM spatial eigenfunction and principal coordinate analyses
Spatial eigenfunction analysis by principal coordinates of neighbour matrices (PCNM) and principal coordinate analysis. | |
Version: 2.1-4 | Last change: 2015-07-13 14:41:21+02 | Rev.: 128 | |