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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Barth, Hi James,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I’m using Kst (Windows Version Kst-2.0.8 Revision 29f1416) to plot live streaming data.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">A Windows data logger program reads data from PLC’s (~ 200-300 data points = columns) and writes a new dataset to a CSV
file each 1000ms –even 100ms will work. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">At the same time Kst Plot reads from this file without any problems.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I had the same problem when the CSV file writer from the datalogger program was not closed after each dataset. I guess
this is your problem!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">See attached screenshot of 30 days data plot with Kst.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">A new CSV file is generated every day, so even a period of several days can be displayed! <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">So you are right - Kst is a wonderful tool.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Joerg<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<P><FONT face="Arial" size="2"><IMG height="102" width="150" src="cid:CF66E0CAC98C4277@B2258EDBD07E7348" alt="Herrenknecht Tunnelling Systems"></FONT></P>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> Kst <kst-bounces@kde.org>
<b>Im Auftrag von </b>Barth Netterfield<br>
<b>Gesendet:</b> Montag, 16. Juli 2018 15:07<br>
<b>An:</b> kst@kde.org; JAMES WATT <jmsnwtt@gmail.com><br>
<b>Betreff:</b> Re: About live streaming data plot<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p>Hmmm...<o:p></o:p></p>
<p>This sounds like Windows race condition.<o:p></o:p></p>
<p>Alas, I only use Linux, so have no idea how to fix this. :-( I do know that people have successfully used kst real time in windows though.<o:p></o:p></p>
<p>Does anyone else on the list have any suggestions?<o:p></o:p></p>
<p>cbn<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 2018-07-15 11:02 PM, JAMES WATT wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello Kst experts, <o:p></o:p></p>
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<p class="MsoNormal">Kst is a such a wonderful tool for plotting live streaming data.<o:p></o:p></p>
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<p class="MsoNormal">It just works.<o:p></o:p></p>
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<p class="MsoNormal">I can validate it by opening a .txt data file by Notepad and change it on the fly and see the change is reflected within Kst.<o:p></o:p></p>
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<p class="MsoNormal">However, I have another application that generates to streaming data and export it to a .txt file in real time.<o:p></o:p></p>
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<p class="MsoNormal">Once I open Kst and set this file as the data source, the application prompts
<span style="font-family:"Verdana",sans-serif;background:#ECEDF3">'Could not write to file.(Cannot open file...The process cannot access the file because it is being used by another process.)'</span>
<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#222222;background:white">My question is why is Kst compatible with the plain Notepade.exe but not to the other application?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="background:white">If Kst only reads to a .txt file, can I set it to a more "recessive" mode so that the other application won't deem it as a writing race condition risk.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="background:white">Thank you for any comments.</span><o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<pre>-- <o:p></o:p></pre>
<pre>C. Barth Netterfield<o:p></o:p></pre>
<pre>416-845-0946<o:p></o:p></pre>
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