NAMESPACE

import(methods)
importFrom(graphics, plot)

importFrom(grid, addGrob)
importFrom(grid, gList)
importFrom(grid, gTree)
importFrom(grid, gpar)
importFrom(grid, grid.draw)
importFrom(grid, grid.layout)
importFrom(grid, grid.newpage)
importFrom(grid, grid.segments)
importFrom(grid, grid.text)
importFrom(grid, popViewport)
importFrom(grid, pushViewport)
importFrom(grid, rectGrob)
importFrom(grid, segmentsGrob)
importFrom(grid, textGrob)
importFrom(grid, viewport)
importFrom(grid, unit)

importFrom(lattice, barchart)

importFrom(nlme, getResponseFormula)
importFrom(nlme, getCovariateFormula)

importFrom("lattice", histogram, panel.histogram, xyplot)

importFrom("stats", "aggregate", "binomial", "fitted", "formula",
           "glm", "median", "qnorm", "quantile")
importFrom("utils",  "head", "tail")

export(
       "weight",
       "map.market"
       )

exportClasses(
              "portfolioBasic",
              "portfolio",

              "exposure",
              "performance",
              "contribution",

              "tradelist",
              "trades",
              "matchedPortfolio",
              "matchedPortfolioCollection",
              
              "portfolioBasicOrNull",
              "portfolioOrNull"
              )

exportMethods(
              "show",
              "summary",

              "plot",


              "initialize",
              "create",
              "calcWeights",
              "calcShares",
              "scaleWeights",
              "updatePrices",
              
              "balance",
              "exposure",
              "performance",
              "contribution",

              "portfolioDiff",
              "securityInfo",

              "matching",

              "all.equal",
              "+",
              "getYahooData",
              "mapMarket",
              
              "expose",

              "expandData"
              )