Hello again,<br><br>What do you mean by "not ideal", doesn't it look like expected, or doesn't it work?<br><br>I'm not sure if you need the Delauny triangulation if you start with a structured grid. I think the points in the grid should have coordinates time/index/0, the stock price should go as an array into the pointdata if you want to use warpscalar. I never worked with structured grids before (only unstructured) so I can only guess.<br>
<br>Try to read the reference (<a href="http://www.vtk.org/doc/release/5.8/html/">http://www.vtk.org/doc/release/5.8/html/</a>) to get an idea what you need to specify. I think if you do not really know how your data structure should look like it's easier to construct it in memory and then use a writer class instead of constructing the datafile by hand.<br>
<br>Kind regards,<br>Johannes Strecha.<br><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Dec 4, 2012 at 10:55 PM, boyeggplant110 <span dir="ltr"><<a href="mailto:boyeggplant110@gmail.com" target="_blank">boyeggplant110@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks for your reply.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> I want to use vtk to construct a program to visualize the stock price. The stock price is static here, not time varying. I want to do something like the attachment. I want to order the stock by x-coordinates so the x-coordinates is stock index(or stock name),y-coodinates is time, and z-coordinates is price. <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I want to use height field to implement this.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I use vtkDelaunay2D and vtkWarpScalar to handle my dataset but the result is not ideal<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Do you have any suggestions?<u></u><u></u></span></p><p class="MsoNormal"><img src="cid:image001.jpg@01CDD237.D4D2EE40" height="288" width="576"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><b><span style="color:#595959">JIE LI</span></b><span style="color:#595959"><u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="color:#595959">Master of Science in Statistics</span></b><span style="color:#595959"><u></u><u></u></span></p><p class="MsoNormal"><b><span style="color:#595959">Division of Statistics + Scientific Computation </span></b><span style="color:#595959"><u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="color:#595959">The University of Texas at Austin| 1 <span style="background:white">University</span> Station G2500| Austin, TX 78712</span></b><span style="color:#595959"> <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Johannes Strecha [mailto:<a href="mailto:j.strecha@gmail.com" target="_blank">j.strecha@gmail.com</a>] <br>
<b>Sent:</b> 2012</span><span style="font-size:10.0pt;font-family:宋体" lang="ZH-CN">年</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">12</span><span style="font-size:10.0pt;font-family:宋体" lang="ZH-CN">月</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">4</span><span style="font-size:10.0pt;font-family:宋体" lang="ZH-CN">日</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> 13:04<br>
<b>To:</b> boyeggplant110; <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br><b>Subject:</b> Re: [vtkusers] How to convert point data into proper datatype in vtk?<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Hello,<br><br>sorry, haven't got the time to check your specific file. Here is a description of the legacy vtk file format:<br><a href="http://www.vtk.org/VTK/img/file-formats.pdf" target="_blank">http://www.vtk.org/VTK/img/file-formats.pdf</a><br>
<br>I try to avoid constructing such files by hand. If you know (or want to learn) python you can construct your dataset in memory (by calling *.InsertNextPoint(...) or so, depends on your data structure). On the plus-side you get to know the vtk data structures really well and you can use one of the numerous writer-classes to write your datafiles as xml or legacy-files, with or without compression, ...<br>
<br>3 things: there's a surplus U in structured_grid & I'm not too sure how stock prices can be visualized by a structured grid, but maybe you thought of something special. Have you had a look at gnuplot or matplotlib? They can do simple visualizations very good, maybe using vtk is a bit of an overkill.<br>
<br>Kind regards,<br>Johannes Strecha.<u></u><u></u></p><div><p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p><div><p class="MsoNormal">On Tue, Dec 4, 2012 at 4:49 PM, boyeggplant110 <<a href="mailto:boyeggplant110@gmail.com" target="_blank">boyeggplant110@gmail.com</a>> wrote:<u></u><u></u></p>
<div><div><p class="MsoNormal">Hi all,<u></u><u></u></p><p class="MsoNormal">I have a problem about how to convert point data to proper data type in vtk. I have a dataset including stock prices. So I have 3 variables: stock price, time, and stock index. I want visualize the dataset but it doesn’t work when I want to construct a structured grid vtk file(as following). I wonder if my method to convert the data is right.<u></u><u></u></p>
<p class="MsoNormal">Example :<u></u><u></u></p><p class="MsoNormal"># vtk DataFile Version 2.0<u></u><u></u></p><p class="MsoNormal">test data<u></u><u></u></p><p class="MsoNormal">ASCII<u></u><u></u></p><p class="MsoNormal">
DATASET STRUCUTURED_GRID<u></u><u></u></p><p class="MsoNormal">DIMENSIONS 30 30 30<u></u><u></u></p><p class="MsoNormal">POINTS 30 float<u></u><u></u></p><p class="MsoNormal">1 1 36.32 <u></u><u></u></p>
<p class="MsoNormal">1 2 36.61 <u></u><u></u></p><p class="MsoNormal">1 3 36.48 <u></u><u></u></p><p class="MsoNormal">1 4 36.64 <u></u><u></u></p>
<p class="MsoNormal">1 5 35.78 <u></u><u></u></p><p class="MsoNormal">1 6 35.94 <u></u><u></u></p><p class="MsoNormal">1 7 37.04 <u></u><u></u></p>
<p class="MsoNormal">1 8 36.97 <u></u><u></u></p><p class="MsoNormal">1 9 37.65 <u></u><u></u></p><p class="MsoNormal">1 10 37.63 <u></u><u></u></p>
<p class="MsoNormal">2 1 76.78 <u></u><u></u></p><p class="MsoNormal">2 2 75.58 <u></u><u></u></p><p class="MsoNormal">2 3 79.05 <u></u><u></u></p>
<p class="MsoNormal">2 4 80.28 <u></u><u></u></p><p class="MsoNormal">2 5 78.64 <u></u><u></u></p><p class="MsoNormal">2 6 78.95 <u></u><u></u></p>
<p class="MsoNormal">2 7 82.58 <u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">The first column is stock index, second is time, third is price.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">Thanks in advance!<u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal"><b><span style="color:#595959">JIE </span></b><u></u><u></u></p>
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