title: How do I set width of candles in candle chart using plot.xts?
body: <p>I have simple OHLC data in and XTS </p>
  
  <pre><code>SF &lt;- structure(c(1.064, 1.07, 1.071, 1.08, 1.08, 1.076, 1.078, 1.08,
  1.08, 1.082, 1.081, 1.082, 1.074, 1.07, 1.073, 1.075, 1.081,
  1.084, 1.092, 1.091, 1.097, 1.095, 1.099, 1.094, 1.096, 1.097,
  1.096, 1.096, 1.097, 1.091, 1.078, 1.083, 1.088, 1.084, 1.081,
  1.095, 1.096, 1.085, 1.074, 1.075, 1.073, 1.07, 1.068, 1.072,
  1.084, 1.08, 1.081, 1.077, 1.081, 1.083, 1.084, 1.083, 1.082,
  1.082, 1.075, 1.074, 1.075, 1.092, 1.086, 1.092, 1.093, 1.098,
  1.102, 1.103, 1.099, 1.098, 1.1, 1.101, 1.098, 1.098, 1.1, 1.092,
  1.084, 1.087, 1.088, 1.084, 1.096, 1.099, 1.097, 1.086, 1.078,
  1.076, 1.076, 1.073, 1.064, 1.069, 1.071, 1.077, 1.075, 1.074,
  1.078, 1.078, 1.08, 1.079, 1.078, 1.073, 1.068, 1.07, 1.069,
  1.074, 1.08, 1.083, 1.089, 1.09, 1.096, 1.094, 1.092, 1.092,
  1.094, 1.094, 1.09, 1.092, 1.088, 1.08, 1.076, 1.078, 1.081,
  1.079, 1.08, 1.09, 1.084, 1.072, 1.073, 1.069, 1.066, 1.07, 1.067,
  1.072, 1.08, 1.079, 1.076, 1.077, 1.08, 1.08, 1.082, 1.081, 1.081,
  1.074, 1.072, 1.073, 1.074, 1.081, 1.084, 1.091, 1.092, 1.097,
  1.097, 1.099, 1.095, 1.095, 1.097, 1.097, 1.096, 1.094, 1.091,
  1.08, 1.083, 1.086, 1.083, 1.082, 1.095, 1.096, 1.086, 1.074,
  1.075, 1.073, 1.071, 1.072), .Dim = c(42L, 4L), .Dimnames = list(
  NULL, c("Open", "High", "Low", "Close")), index = structure(c(1353427200,
  1353513600, 1353600000, 1353859200, 1353945600, 1354032000, 1354118400,
  1354204800, 1354464000, 1354550400, 1354636800, 1354723200, 1354809600,
  1355068800, 1355155200, 1355241600, 1355328000, 1355414400, 1355673600,
  1355760000, 1355846400, 1355932800, 1356019200, 1356278400, 1356451200,
  1356537600, 1356624000, 1356883200, 1357056000, 1357142400, 1357228800,
  1357488000, 1357574400, 1357660800, 1357747200, 1357833600, 1358092800,
  1358179200, 1358265600, 1358352000, 1358438400, 1358697600), tzone = "", tclass = c("POSIXct",
  "POSIXt")), .indexCLASS = c("POSIXct", "POSIXt"), tclass = c("POSIXct",
  "POSIXt"), .indexTZ = "", tzone = "", class = c("xts", "zoo"))
  
  plot.xts(SF, type='candles')
  </code></pre>
  
  <p>The candles are coming out very thin. How do I make them wider?</p>
  
  <p>By looking into source code of plot.xts I see that xts internal function plot.ohlc.candles is called to plot OHLC data as candles, to which  ... is passed. H</p>
  
  <pre><code>plot.ohlc.candles(x, bar.col = bar.col, candle.col = candle.col, 
              ...)
  </code></pre>
  
  <p>However, if I try to set argument width=0.5 in my plot.xts function call, I get warnings that width is not graphic parameter </p>
  
  <pre><code>Warning messages:
  1: In plot.window(...) : "width" is not a graphical parameter
  2: In plot.xy(xy, type, ...) : "width" is not a graphical parameter
  3: In axis(1, at = xycoords$x, labels = FALSE, col = "#BBBBBB", ...) :
    "width" is not a graphical parameter
  4: In axis(1, at = xycoords$x[ep], labels = names(ep), las = 1, lwd = 1,  :
    "width" is not a graphical parameter
  5: In axis(2, ...) : "width" is not a graphical parameter
  6: In title(width = 0.5) : "width" is not a graphical parameter
  There were 12 warnings (use warnings() to see them)
  &gt; warnings()
  Warning messages:
  1: "width" is not a graphical parameter
  2: "width" is not a graphical parameter
  3: "width" is not a graphical parameter
  4: "width" is not a graphical parameter
  5: "width" is not a graphical parameter
  6: "width" is not a graphical parameter
  7: "width" is not a graphical parameter
  8: "width" is not a graphical parameter
  9: "width" is not a graphical parameter
  10: "width" is not a graphical parameter
  11: "width" is not a graphical parameter
  12: "width" is not a graphical parameter
  </code></pre>
  
  <p>I am unable to use quantmod or xtsExtra since I am trying to plot two different plots (one timeseries and other normal XY line graph) side by side.</p>