g1.types

g1.types(data) returns the column data types. For example:

var data = [
  { a: 1, b: 1.1, c: "c", d: "2014-04-04", e: true, f: new Date() },
  { a: 2, b: 2 },
];
g.types(data); // {"a":"number","b":"number","c":"string","d":"string","e":"boolean","f":"date"}
g1.types(data, { convert: true }); // {"a":"number","b":"number","c":"string","d":"date","e":"boolean","f":"date"}

g1.types options

types() accepts 2 parameters:

• data: a list of objects
• options: a dictionary that may contain these keys:
  • convert: converts values to the right type. For example, “1” is converted to 1. default: false
  • limit: number of rows to evaluate. default: 1000
  • ignore: list of values that should be ignored. default: [null, undefined]

Rules:

• Evaluate up to limit rows
• Ignore values that are keys in the ignore option. Only consider the rest
• If convert is false, then for each column:
  • If all values are Date objects -> date
  • Else if all values are numbers -> number
  • Else if all values are strings -> string
  • Else if all values are bools -> boolean
  • Else if there are no values or is undefined or null -> null
  • Else -> mixed
• Else if convert is true, then for each column:
  • If all values can be converted to Date -> date
  • Else if all values can be converted to numbers -> number
  • Else if all values are bools -> boolean
  • Else if there are no values or is undefined or null -> null
  • Else -> string