Do you mean plotting via a software? You may want to try Mplus(http://www.statmodel.com/), LISREL(http://www.ssicentral.com/lisrel/), or Amos(http://www-03.ibm.com/software/products/en/spss-amos/), as well. They all have "User's Guide" documentation and some examples available on the website.
not a software for plotting but rather for processing Scanning Electron Micrographs such the estimation of the grain size, the pore size measeurements and so on...
I'm very sorry for misunderstanding the question you've asked. I considered the "SEM" as the abbreviation of "Structural Equation Modeling". My apology! Wish someone else could help you.