### Embed using principal components

`pc -m# [-d# -q# -o` outfile`-l# -x# -c# -V# -h]` file

> `-m` initial embedding dimension
> `-d` delay for initial embedding (1)
> `-q` number of principal components (2)
> `-l` number of values to be read (all)
> `-x` number of values to be skipped (0)
> `-c` column to be read (1 or file,#)
> `-o` output file name, just `-o` means file`_pc`
> `-V` verbosity level (0 = only fatal errors)
> `-h` show this message

Reads data from file and writes the projections onto the largest `m` principal components as columns. Output file file`_pc`. For each principal component, the fraction of the variance (not rms amplitude) covered and the accumulative fraction of the variance covered keeping all components so far are printed on `stderr`.

See also svd

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