<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Hello,</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default"><span style="font-family:tahoma,sans-serif">I am currently struggling with trying to diagnose small, but very noticeable differences between raster images (png workstation) created in </span><span style="font-family:tahoma,sans-serif">NCL 6.1.2 and the newest version 6.2.1, using the exact </span><span style="font-family:tahoma,sans-serif">same code and data files in both cases. Large-scale patterns in the data are consistent; however, something has changed between the two versions of NCL that make the data shift ever so slightly</span><font face="tahoma, sans-serif"> (see attached images).</font></div><div class="gmail_default"><font face="tahoma, sans-serif"><br></font></div><div class="gmail_default"><font face="tahoma, sans-serif">I've perused all the changes made in the the new version of NCL, and while it is hard to pinpoint the problem, could this be related to the change in how transparency is handled in raster contouring, or the raster contouring method itself? Searching the ncl-talk archives, I came across this statement from another raster image-related problem:</font></div><div class="gmail_default"><font face="tahoma, sans-serif"><br></font></div>
<div dir="ltr"><div class="gmail_default"><span style="color:rgb(0,0,0)"><font face="tahoma, sans-serif">"I think the problem is that the old workstation types do not understand transparency in colors."</font></span><br></div><div class="gmail_default"><span style="color:rgb(0,0,0)"><font face="tahoma, sans-serif"><br></font></span></div><div class="gmail_default"><span style="color:rgb(0,0,0)"><font face="tahoma, sans-serif">I have experimented with </font></span><font color="#000000" face="tahoma, sans-serif">res@cnMissingValFillColor to no avail. We have also looked at data resolution vs. screen resolution, and while that makes a difference within the figure, it does not solve the discrepancy between versions. Any insight regarding this issue is greatly appreciated.</font></div><div class="gmail_default"><font color="#000000" face="tahoma, sans-serif"><br></font></div><div class="gmail_default"><font color="#000000" face="tahoma, sans-serif">Andrea</font></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><span style="color:rgb(0,0,0);font-family:'Times New Roman';font-size:medium"><br></span></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><span style="color:rgb(0,0,0);font-family:'Times New Roman';font-size:medium"><br></span></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><font size="1" style="font-family:arial"><span style="color:rgb(102,102,102)">~~~</span><br style="color:rgb(102,102,102)"><b><span style="color:rgb(102,102,102)">Andrea M. Allan</span></b><br style="color:rgb(102,102,102)"><span style="color:rgb(102,102,102)">Postdoctoral Research Associate</span></font><div style="font-family:arial"><font size="1"><span style="color:rgb(102,102,102)">College of Earth, Ocean, and Atmospheric Sciences</span><br style="color:rgb(102,102,102)"><span style="color:rgb(102,102,102)">Oregon State University</span><br style="color:rgb(102,102,102)"><span style="color:rgb(102,102,102)">112 Burt Hall<br></span></font><span style="font-size:x-small"><a href="tel:541-737-3427" value="+15417373427" target="_blank">541-737-3427</a></span></div><div style="font-family:arial"><font size="1"><font color="#666666"><a href="mailto:aallan@coas.oregonstate.edu" target="_blank">aallan@coas.oregonstate.edu</a></font></font></div><div style="font-family:arial"><font size="1">~~~</font></div></div></div></div>