title: R forecast.holtwinters in forecast package not found
body: <p>I am trying to use the forecast.holtwinters function and when I try to run it:</p>
  
  <pre><code>dftimeseriesforecast &lt;- forecast.HoltWinters(data, h=65)
  </code></pre>
  
  <p>I get this error:</p>
  
  <blockquote>
    <p>Error: could not find function "forecast.HoltWinters"</p>
  </blockquote>
  
  <p>I have also tried this:</p>
  
  <pre><code> dftimeseriesforecast= forecast::forecast.HoltWinters(data, h=65)
  </code></pre>
  
  <p>But I get this error message:</p>
  
  <blockquote>
    <p>Error: 'forecast.HoltWinters' is not an exported object from 'namespace:forecast'</p>
  </blockquote>
  
  <p>I look at this list of functions in the forecast package using this code:</p>
  
  <pre><code>ls("package:forecast")
  </code></pre>
  
  <p>and this returns:</p>
  
  <blockquote>
    <p>[1] "%>%"               "accuracy"          "Acf"               "arfima"            "Arima"             "arima.errors"      "arimaorder"        "auto.arima"<br>
     [9] "autolayer"         "baggedETS"         "bats"              "bizdays"           "bld.mbb.bootstrap" "BoxCox"            "BoxCox.lambda"     "Ccf"<br>
    [17] "checkresiduals"    "croston"           "CV"                "CVar"              "dm.test"           "dshw"              "easter"            "ets"<br>
    [25] "findfrequency"     "forecast"          "forecast.ets"      "fourier"           "fourierf"          "gas"               "geom_forecast"     "GeomForecast"<br>
    [33] "getResponse"       "ggAcf"             "ggCcf"             "gghistogram"       "gglagchull"        "gglagplot"         "ggmonthplot"       "ggPacf"<br>
    [41] "ggseasonplot"      "ggsubseriesplot"   "ggtaperedacf"      "ggtaperedpacf"     "ggtsdisplay"       "gold"              "holt"              "hw"<br>
    [49] "InvBoxCox"         "is.acf"            "is.Arima"          "is.baggedETS"      "is.bats"           "is.constant"       "is.ets"            "is.forecast"<br>
    [57] "is.mforecast"      "is.nnetar"         "is.nnetarmodels"   "is.splineforecast" "is.stlm"           "ma"                "meanf"             "monthdays"<br>
    [65] "msts"              "na.interp"         "naive"             "ndiffs"            "nnetar"            "nsdiffs"           "Pacf"              "remainder"<br>
    [73] "rwf"               "seasadj"           "seasonal"          "seasonaldummy"     "seasonaldummyf"    "seasonplot"        "ses"               "sindexf"<br>
    [81] "snaive"            "splinef"           "StatForecast"      "stlf"              "stlm"              "taperedacf"        "taperedpacf"       "taylor"<br>
    [89] "tbats"             "tbats.components"  "thetaf"            "trendcycle"        "tsclean"           "tsCV"              "tsdisplay"         "tslm"<br>
    [97] "tsoutliers"        "wineind"           "woolyrnq"   </p>
  </blockquote>
  
  <p>Does anyone know what is going on? I've used this before and had no problems.  I'm using forecast version 8.1.</p>