Ngspice ASCII Rawfile Parser

A Ngspice ASCII rawfile parser written in Javascript. Dependent on Node.js.

Installation

npm install dragonman225/ngrp

Run the Example

npm run test

Take a look at parser.spec.js in folder test to see how it works.

API

Instance parser

async parser.load(path)

• Load Ngspice ASCII raw file asynchronously.

  • To change Ngspice rawfile format to ascii, add a line set filetype=ascii in your .spiceinit.

parser.summarize()

• Return a summary object of the parsed data.

parser.getResults()

• Return the parsed data in the following format.

• An array containing all plots (e.g. Operating Points, Transient Analysis). Each plot is an object.

  [
    {
      title: String, /* Title. Normally empty. */
      date: String, /* Date */
      name: String, /* Plotname. Name of the plot. */
      flags: String, /* Flags */
      nVariables: Integer, /* No. Variables */
      nPoints: Integer, /* No. Points */
      variables: [
        {
          index: Integer, /* The index of data values in "Point" array. */
          name: String, /* Name of the variable. */
          type: String /* Type of the variable, e.g. voltage, current. Ngspice sometimes gives wrong type. */
        }
      ],
      values: [
        [ Float ] /* An array of float numbers. */
      ]
    }
  ]

• Note

  For a variable :

  {
    index: 3,
    name: "xxx",
    type: "yyy"
  }

  Data of the variable are values[0][3], values[1][3], ... values[nPoints-1][3].

parser.getResultsCSV()

• Return CSV strings of all plots.

  [
      String, /* Plot 1 CSV string */
      String, /* Plot 2 CSV string */
      ...
  ]