<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">Hi,</span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">I was visualising my wind velocity using glyphs and cloud water content at the same time. However, I notice that the direction where the clouds move do not match the direction the glyphs pointing. </span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">Below are the steps how I create the output:</span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">The data is a netcdf file with wind variable array "ua" (eastward_wind_speed), "va" (northward_wind_speed), and "wa" (wind_vertical_velocity). </span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">I used a cell_data_to_point_data filter to convert them into point data.</span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">Then I combined these 3 arrays using a Paraview calculator with the equation iHat*ua + jHat*va + kHat*wa.</span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">Then do a glyph filter to visualise the wind velocity.</span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">Attached image is the output I got.</span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">The blue isosurfaces are the cloud water content while the glyphs are the wind velocity. The problem is, the clouds are moving to the left, which does not match where the glyphs are pointing at.</span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">What would be the possible reason for this error? </span><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><br style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class=""><span style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(247, 247, 247);" class="">TIA</span><div class=""><img apple-inline="yes" id="2494D312-1CF4-4CB6-91DF-6EEE8CBDC03E" src="cid:A74333F5-3617-43DF-9D5F-1032A4A9802A@Home" class=""></div></body></html>