 
   # mappers
   Bokeh.LinearMapper      = require("mapper/1d/linear_mapper")
+  Bokeh.LogMapper         = require("mapper/1d/log_mapper")
   Bokeh.CategoricalMapper = require("mapper/1d/categorical_mapper")
   Bokeh.GridMapper        = require("mapper/2d/grid_mapper")
   Bokeh.LinearColorMapper = require("mapper/color/linear_color_mapper")

  Bokeh.AdaptiveTicker           = require("ticking/adaptive_ticker")
  Bokeh.BasicTicker              = require("ticking/basic_ticker")
  Bokeh.BasicTickFormatter       = require("ticking/basic_tick_formatter")
  Bokeh.CategoricalTicker        = require("ticking/categorical_ticker")
  Bokeh.CategoricalTickFormatter = require("ticking/categorical_tick_formatter")
  Bokeh.CompositeTicker          = require("ticking/composite_ticker")

  Bokeh.DatetimeAxis    = require("renderer/guide/datetime_axis")
  Bokeh.Grid            = require("renderer/guide/grid")
  Bokeh.LinearAxis      = require("renderer/guide/linear_axis")
  Bokeh.LogAxis         = require("renderer/guide/log_axis")

  # overlays
  Bokeh.BoxSelection = require("renderer/overlay/box_selection")
