File ‘orderbook/R/AllGenerics.R’:
  .onLoad calls:
    require(methods)

Package startup functions should not change the search path.
See section ‘Good practice’ in '?.onAttach'.

.animate.plot : new.yscale.components: no visible global function
  definition for ‘yscale.components.default’
.animate.plot: no visible global function definition for ‘barchart’
.combine.size: no visible global function definition for ‘aggregate’
.plot.ob : new.yscale.components: no visible global function definition
  for ‘yscale.components.default’
.plot.ob: no visible global function definition for ‘xyplot’
.plot.ob : <anonymous>: no visible global function definition for
  ‘panel.xyplot’
.plot.ob : <anonymous>: no visible global function definition for
  ‘panel.lines’
.plot.orders.ob : new.yscale.components: no visible global function
  definition for ‘yscale.components.default’
.plot.orders.ob: no visible global function definition for ‘xyplot’
.plot.orders.ob : <anonymous>: no visible global function definition
  for ‘panel.xyplot’
.plot.orders.ob : <anonymous>: no visible global function definition
  for ‘panel.lines’
.plot.side.ob : new.yscale.components: no visible global function
  definition for ‘yscale.components.default’
.plot.side.ob: no visible global function definition for ‘barchart’
.plot.side.ob: no visible global function definition for
  ‘trellis.focus’
.plot.side.ob: no visible global function definition for ‘grid.text’
.plot.side.ob: no visible global function definition for
  ‘trellis.unfocus’
.supply.demand.plot: no visible global function definition for ‘xyplot’
.supply.demand.plot : <anonymous>: no visible global function
  definition for ‘panel.xyplot’
.supply.demand.plot : <anonymous>: no visible global function
  definition for ‘panel.abline’
copy,orderbook: no visible global function definition for ‘hash’
reset,orderbook: no visible global function definition for ‘clear’
Undefined global functions or variables:
  aggregate barchart clear grid.text hash panel.abline panel.lines
  panel.xyplot trellis.focus trellis.unfocus xyplot
  yscale.components.default
Consider adding
  importFrom("stats", "aggregate")
to your NAMESPACE file.