<div dir="ltr">Hi Kevin,<div>The problem is not that the continent color is "overwriting" the colors of your data. It's that the standard "AreaFill" plot requires there to be several adjacent grid points of non-missing data before it will draw anything. Isolated points of non-missing data are not drawn at all. </div><div>The simplest way to see all your data with the grey colored continents underneath is to set cnFillMode to "CellFill". This will draw every grid point. However, it will not be a smooth contour plot; each cell appears as a little rectangle. </div><div><br></div><div>If you want a smooth plot, I would recommend that you do not set the 0 values in your data to -999 and make it into a missing value. Instead, assuming you want your color bar to stay the same, try setting the 0 values to a value just below 0 (e.g. -0.1) and then set the first color of the level colors to transparent. This keeps the gradient close to what it would be naturally (as opposed to setting it to -999 which is very discontinuous relative to the rest of the data), but at the same time keeps it less than 0, so it falls below the minimum contour level and is given the color of the leftmost color in the color bar.</div><div><br></div><div>I am attaching a modified version of your script that illustrates my suggestions.</div><div> -dave</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 1, 2014 at 3:27 PM, kevin.lemorzadec <span dir="ltr"><<a href="mailto:kevin.lemorzadec@mun.ca" target="_blank">kevin.lemorzadec@mun.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Dear ncl users,<br><br></div>I am trying to colour the continent off an image with grey. I have done that in the past successfully but this time some of my data get overwritten by the continent colour and I can't figure out what is happening. Maybe one of you will catch something that I haven't as I have been using ncl only for a couple of days. <br clear="all"><div><div><div><div><br></div><div>In my script if I comment out :<br>Hplot@_FillValue = -999 <br></div><div>All my data are plotted but when I use it to fill the continent in grey some day are apparently masked.<br></div><div><br>I have attached my data file and my script to that email.<br>ncl Version 6.1.0<br></div><div><br></div><div>Thanks for any help<span class="HOEnZb"><font color="#888888"><br><br></font></span></div><span class="HOEnZb"><font color="#888888"><div>-- <br>Kevin Le Morzadec - Ph.D. candidate<br>
Dept of Physics and Physical Oceanography,<br>
Memorial University of Newfoundland, Canada<br>
Tel <a value="+17098648654">709-864-8654</a>
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