title: Selecting a time period with window in R; format "dd/mm/yyyy h:m:s" (Windows 7)
body: <p>I have the following problem. I wanted to use the following code to select a specific time period for daily data, for instance this one:</p>
  
  <pre><code>window(Modellwind.zoo, start = as.Date("01/Jan/2001 12:00:00"), end = as.Date("4/Jan/2001 12:00:00"))
  </code></pre>
  
  <p>I get the following error message: <strong>Error in charToDate(x) : 
    character string is not in a standard unambiguous format</strong></p>
  
  <p>When I tried to find an acceptable time format with the function anydate, it didnt work either:</p>
  
  <pre><code>library(anytime)
  anydate("01/Jan/2001 12:00:00")
  </code></pre>
  
  <p>Using the following code:</p>
  
  <pre><code>window(Modellwind.zoo, start = as.Date("2001-01-01"), end = as.Date("2001-01-04")) 
  </code></pre>
  
  <p>Unfortunately, I'm getting the following error:</p>
  
  <pre><code> **Warning messages:
    1: In which(in.index &amp; all.indexes &gt;= start &amp; all.indexes &lt;= end) :
    Incompatible methods ("Ops.dates", "Ops.Date") for "&gt;="
    2: In which(in.index &amp; all.indexes &gt;= start &amp; all.indexes &lt;= end) :
    Incompatible methods ("Ops.dates", "Ops.Date") for "&lt;="**
  </code></pre>
  
  <p>The following code includes a sample of Modellwind.zoo.</p>
  
  <pre><code>structure(c(9.08093655399134, 6.51590181162631, 7.14637946155745, 
  1.43900253813098, 6.78880326680026, 14.3182887821646, 16.3360242476697, 
  16.1781018622214, 17.2200845065928, 15.6439142273171, 8.10504553259712, 
  3.78898221928137, 6.78608582121557, 7.18116948778303, 5.0299974451978, 
  3.49148782050232, 6.9941692218925, 8.45512766287497, 12.0693672354131, 
  11.987955907515, 10.3290912344961, 13.4506307038479, 21.7989491163794, 
  14.0085737502259, 14.5883127217965, 11.8048508250059, 24.7915690531695, 
  19.151192329502, 12.1739793389357, 11.9410486288817, 20.9967608089789, 
  15.2111025271479, 5.90129944159158, 2.42733488656831, 7.20743282263504, 
  22.737089035552, 14.8219437253637, 14.0558804343021, 8.98137356225915, 
  12.9592918632241, 18.4870237580719, 9.11790624009415, 2.27721679625411, 
  2.61125956054424, 3.26998407545227, 5.35392572192135, 4.95193258824599, 
  6.86224460928498, 9.06594694653957, 12.4505570716657, 12.740653858499, 
  15.8771799446521, 12.5618618366812, 3.58848453998801, 10.9966305297934, 
  4.86674413518877, 10.7031531327265, 16.2043681264107, 12.0587344974091, 
  2.10949588086561), index = structure(c(18659.5, 18660.5, 18661.5, 
  18662.5, 18663.5, 18664.5, 18665.5, 18666.5, 18667.5, 18668.5, 
  18669.5, 18670.5, 18671.5, 18672.5, 18673.5, 18674.5, 18675.5, 
  18676.5, 18677.5, 18678.5, 18679.5, 18680.5, 18681.5, 18682.5, 
  18683.5, 18684.5, 18685.5, 18686.5, 18687.5, 18688.5, 18689.5, 
  18690.5, 18691.5, 18692.5, 18693.5, 18694.5, 18695.5, 18696.5, 
  18697.5, 18698.5, 18699.5, 18700.5, 18701.5, 18702.5, 18703.5, 
  18704.5, 18705.5, 18706.5, 18707.5, 18708.5, 18709.5, 18710.5, 
  18711.5, 18712.5, 18713.5, 18714.5, 18715.5, 18716.5, 18717.5, 
  18718.5), .Dim = 60L, format = structure(c("dd/mm/yyyy", "h:m:s"
  ), .Names = c("dates", "times")), origin = c(12L, 1L, 1949L), class = c("chron", 
  "dates", "times")), class = "zoo")
  </code></pre>