<div dir="ltr"><div><div><div><div><div><div><div><div>Scott,<br><br></div>Streamlines are green by default as this is the default "Solid color" we set for this representation. You can change the coloring with any other array as usual.<br></div>Doesn't this work on your machine? I just tried Wavelet+Gradient and it works as expected (eg. I can color with RTData or a component of RTDataGradient).</div><div>With wich version of ParaView did you test?<br></div>The line width is set to 1 by default but this can be changed, changing the usual "Line Width" property.<br></div>I toggled the orientation axis on and off but didn't see any change. If they grew on your machine this is clearly a bug. <br><br></div>Regarding Dave's small CTH dataset, I resampled it to image. It works without applying the gradient but you need to reduce the Step Length to get something meaningful.<br></div>Not sure why you would apply a Gradient here as the data comes with a velocity field but when applying a gradient filter (by default on the Mass array), the<br></div>Stream Lines representation hangs - I guess because vector field is null. So clearly we should add a check to avoid this issue.<br><br></div>Best,<br><div><div><div><div><br></div></div></div></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><b>Joachim Pouderoux</b><font size="2">, <font size="1">PhD</font></font><br><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><font size="1"><i>Technical Expert - Scientific Computing Team</i></font><br><b><font size="1"><a href="http://www.kitware.fr" target="_blank">Kitware SAS</a></font></b><br></blockquote>
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<br><div class="gmail_quote">2017-09-12 14:04 GMT-04:00 Scott, W Alan <span dir="ltr"><<a href="mailto:wascott@sandia.gov" target="_blank">wascott@sandia.gov</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I played around with this plugin/filter a bit this morning, and am pretty confused. Let’s start with a question – what does this plugin do?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Lets start with my observations.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I loaded the plugin, and then tested with Wavelet/ Gradient filter/ Stream Lines.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Streamlines are green. Color can’t be changed. Is this a bug, or by design?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Streamlines default to really, really small.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">As I toggled the orientation axis on and off, the streamlines grew. Huh? Is this a bug, or by design?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I tried Dave’s Small CTH dataset, then Resample to Image, then Gradient. This crashed. This shouldn’t crash, should it?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Thanks for any insight,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Alan<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> ParaView [mailto:<a href="mailto:paraview-bounces@paraview.org" target="_blank">paraview-bounces@<wbr>paraview.org</a>]
<b>On Behalf Of </b>Wilhelm Lionel<br>
<b>Sent:</b> Tuesday, September 12, 2017 8:19 AM<br>
<b>To:</b> <a href="mailto:Paraview@paraview.org" target="_blank">Paraview@paraview.org</a><br>
<b>Subject:</b> [EXTERNAL] [Paraview] Rendering problem with the Streamline Representation plugin<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Dear Paraviewers,<u></u><u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">I found sevral rendering issues in the Streamline Representation plugin. In order the issue to be reproducible, I followed the "How to test ?" section on this page
<a href="https://blog.kitware.com/new-animated-stream-lines-representation-for-paraview-5-3/" target="_blank">
https://blog.kitware.com/new-<wbr>animated-stream-lines-<wbr>representation-for-paraview-5-<wbr>3/</a>. In order to see what I'm talking about, one can open Paraview (GUI) tools -> Python Shell -> run script -> PVstateSurfRepBug.py (I load the plugin in the script)<u></u><u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">1. The streamlines appear in green as default color. If I try to set their color to white in the GUI it does not work (Gradient proxy -> Coloring -> edit color map). The user must first set the color
as some other preset and then the GUI sets the DiffuseColor attribute to whatever the user choose.<u></u><u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">2. In addition to the gradient filter, if a slice filter is attached to the wavelet source, even if the streamlines should be displayed (because the slice plane is behind the streamlines) they do
always show. If the representation type of the slice is Point Gaussian, Surface or Surface with edges, they do not show but the other representation types work well
<u></u><u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">3. If I want to record an animation of the streamlines, the "Transparent Background" option leads to strange animation (with AVI format but not with OGG/Theora).<u></u><u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Despite these little bugs, I'd like to thank the developpers for this awsome plugin !! It realy helps to understand and interpret CFD results :)<u></u><u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Kindly,<u></u><u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Lionel Wilhelm<u></u><u></u></span></p>
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