@quartic/bokehjs/src/coffee/models/formatters/numeral_tick_formatter.coffee

Interactive, novel data visualization

import * as Numbro from "numbro"

import {TickFormatter} from "./tick_formatter"
import * as p from "core/properties"

export class NumeralTickFormatter extends TickFormatter
  type: 'NumeralTickFormatter'

  @define {
    # TODO (bev) all of these could be tightened up
    format:   [ p.String, '0,0'   ]
    language: [ p.String, 'en'    ]
    rounding: [ p.String, 'round' ]
  }

  doFormat: (ticks, loc) ->
    format = @format
    language = @language
    rounding = switch @rounding
      when "round", "nearest"   then Math.round
      when "floor", "rounddown" then Math.floor
      when "ceil",  "roundup"   then Math.ceil

    labels = ( Numbro.format(tick, format, language, rounding) for tick in ticks )
    return labels