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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Are you reading your data in with the Generic/CF reader and with “Spherical Coordinates” clicked on? If so, then the lat/lon/height coordinates are transformed to a sphere in the Cartesian
space and thus no longer align with the x, y, and z axes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">-Ken<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-family:Calibri;color:black">From:
</span></b><span style="font-family:Calibri;color:black">ParaView <paraview-bounces@paraview.org> on behalf of Henry Lau <henrylau9677@gmail.com><br>
<b>Date: </b>Friday, April 21, 2017 at 6:35 PM<br>
<b>To: </b>"paraview@paraview.org" <paraview@paraview.org><br>
<b>Subject: </b>[EXTERNAL] [Paraview] Wind Velocity does not match cloud movement<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:Verdana;background:#F7F7F7">Hi,</span><span style="font-size:10.0pt;font-family:Verdana"><br>
<br>
<span style="background:#F7F7F7">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>
<br>
<span style="background:#F7F7F7">Below are the steps how I create the output:</span><br>
<span style="background:#F7F7F7">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>
<span style="background:#F7F7F7">I used a cell_data_to_point_data filter to convert them into point data.</span><br>
<span style="background:#F7F7F7">Then I combined these 3 arrays using a Paraview calculator with the equation iHat*ua + jHat*va + kHat*wa.</span><br>
<span style="background:#F7F7F7">Then do a glyph filter to visualise the wind velocity.</span><br>
<br>
<span style="background:#F7F7F7">Attached image is the output I got.</span><br>
<span style="background:#F7F7F7">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>
<br>
<span style="background:#F7F7F7">What would be the possible reason for this error? </span><br>
<br>
<span style="background:#F7F7F7">TIA</span></span> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><img width="610" height="481" id="_x0032_494D312-1CF4-4CB6-91DF-6EEE8CBDC03E" src="cid:image001.png@01D2BAF6.F2C7B0A0"><o:p></o:p></p>
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