<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Hi Cathy,<div><br></div><div>I had a similar problem before. It might work to duplicate the variable and replace the categories you want to be transparent with missing values. That way they won’t be colored. </div><div><br></div><div>Good luck,</div><div>Toni</div><div><br><br><div id="AppleMailSignature" dir="ltr"><b class="" style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">Toni Klemm</b><b class="" style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;"><span class="">, </span><span class="">Ph.D.</span></b><div><span style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">Postdoctoral Research Associate</span></div><div><span style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">Department of Ecosystem Science and Management</span></div><div><span style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">College of Agriculture and Life Sciences</span></div><div><span style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">Texas A&M University, College Station, TX</span></div><div><span style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">Contributor to the </span><a href="https://www.eccforum.org/" class="" style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">Early Career Climate Forum</a></div><div><span class="" style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;"><a href="http://www.toni-klemm.de/" class="">www.toni-klemm.de</a> | </span><a href="https://twitter.com/ToniKlemm" class="" style="background-color: rgba(255, 255, 255, 0); font-size: 13pt;">@toniklemm</a></div><div><br></div></div><div dir="ltr"><br>On Jun 6, 2019, at 11:35 PM, Cathy Smith <<a href="mailto:cathy.smith@noaa.gov">cathy.smith@noaa.gov</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr"><span>NCLers</span><br><span></span><br><span>I am hoping I missed this in the doc. I'd like create a map that is colorfilled (either contour or raster). I would like the lowest 3 contour ranges to be transparent and the rest not. I can't figure out how to do this. I tried overlay and I wasn't able to not color part of a map so the overlay worked. Also, I don't see you can set an array of transparency for each color.</span><br><span></span><br><span>Any suggestions would be appreciated.</span><br><span></span><br><span>Cathy Smith</span><br><span></span><br><span>-- </span><br><span>----------------------------------------------</span><br><span>NOAA/ESRL PSD and CU CIRES</span><br><span>303-497-6263</span><br><span><a href="https://www.esrl.noaa.gov/psd/people/cathy.smith/">https://www.esrl.noaa.gov/psd/people/cathy.smith/</a></span><br><span></span><br><span>Emails about data/webpages may get quicker responses from emailing</span><br><span><a href="mailto:esrl.psd.data@noaa.gov">esrl.psd.data@noaa.gov</a></span><br><span></span><br><span>_______________________________________________</span><br><span>ncl-talk mailing list</span><br><span><a href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a></span><br><span>List instructions, subscriber options, unsubscribe:</span><br><span><a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a></span><br></div></blockquote></div></body></html>