psych

My question is concerned with the principal() function in psych package. set.seed(0) x <- replicate(8, rnorm(10)) pca.x <- principal(x, nf=4, rotate="varimax") I know if I want to see the loadings table, I can use loading.x <-loadings(pca.x) , than I will have the following results. > loading.x Loadings: RC1 RC3 RC4 RC2 [1,] -0.892 -0.205 0.123 [2,] 0.154 0.158 0.909 [3,] -0.660 0.255 -0.249 0.392 [4,] -0.352 0.412 0.614 -0.481 [5,] 0.950 -0.208 0.117 [6,] -0.302 0.111 0.860 [7,] 0.852 -0.195 -0.358 [8,] -0.109 0.903 0.265 RC1 RC3 RC4 RC2 SS loadings 2.323 1.934 1.373 1.342 Proportion Var 0

Ruby 1.9.3 defaults to using Psych for YAML. While the ruby-doc documentation for it is completely lacking , I was able to find one external piece of documentation that hinted that the indentation option is supported. This was borne out in testing: irb(main):001:0> RUBY_VERSION #=> "1.9.3" irb(main):002:0> require 'yaml' #=> true irb(main):003:0> [[[1]]].to_yaml #=> "---\n- - - 1\n" irb(main):009:0> [[[1]]].to_yaml indentation:9 #=> "---\n- - - 1\n" There are presumably more options supported. Specifically, I want to know how to change the line wrap width or disable it altogether. What are the

I am getting this error message: "It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby." I have tried entering this command: rvm pkg install libyaml and I am getting this error message: "Fetching yaml-0.1.4.tar.gz to /Users/luke/.rvm/archives Extracting yaml-0.1.4.tar.gz to /Users/luke/.rvm/src Error running 'tar xmzf /Users/luke/.rvm/archives/yaml-0.1.4.tar.gz -C /Users/luke/.rvm/src ', please read /Users/luke/.rvm/log/yaml/extract.log Configuring yaml in /Users/luke/.rvm/src/yaml-0.1.4. Error running ' .

I tried to get rvm uninstalled in order to use rbenv on my Mac. Everything works fine until ruby comes into play.. when using rbenv install 1.9.3-p194 it compiles it correctly, but after that I'd like to install bundler.. this produces the following error computer:~ computer$ gem install bundler /Users/computer/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>): mapping values are not allowed in this context at line 1 column 34 (Psych::SyntaxError) from /Users/computer/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/psych.rb:203:in `parse_stream' from /Users/computer/

This question is an exact duplicate of: Adding comment to YAML programmatically 1 answer I want to generate a YAML document with some comments between sequence elements but I can't really figure out how to do this. Any pointers? You can’t emit YAML documents containing comments with Psych. Psych basically dumps a Hash, and you can’t have comments in a Hash either. 来源： https://stackoverflow.com/questions/16889044/how-can-i-emit-comments-in-a-yaml-document-using-psych

I have a big string of formatted data (e.g. JSON) that I want to dump to YAML using Psych in ruby while preserving formatting . Basically, I want for JSON to appear in YAML using literal style : --- json: | { "page": 1, "results": [ "item", "another" ], "total_pages": 0 } However, when I use YAML.dump it doesn't use literal style. I get something like this: --- json: ! "{\n \"page\": 1,\n \"results\": [\n \"item\", \"another\"\n ],\n \"total_pages\": 0\n}\n" How can I tell Psych to dump scalars in wanted style? Solution: Big thanks to Aaron Patterson for his solution that I'm expanding on here