r calibration:</p>
<p><code>popsize &lt;- list(
    Ecoregion = c(
      East = 750,
      Central = 500,
      West = 250),
    Type = c(
      Streams = 1150,
      Rivers = 350))
  </code></p>
<p>Example popsize for post-stratification using a data frame:</p>
<p><code>popsize &lt;- data.frame(
    Ecoregion = rep(c("East", "Central", "West"),
      rep(2, 3)),
    Type = rep(c("Streams", "Rivers"), 3),
    Total = c(575, 175, 400, 100, 175, 75))
  </code></p>
<p>Example popsize for post-stratification us