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  Chart for SPC ?
Posted by Davidlks on May-16-2007 21:31
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Hi all,

I already email to ASE technical support but i haven't get a reply yet. So, i decide to ask you all whether is it suitable for me to use ChartDirector to develop SPC (Statistical Process Control). I am using Visual C++, i already try the trial in the web. It work quite satisfy but i wonder if i need add or edit the chart is it possible? i still got a few question before i can decide to purchase Chart Director, ASE technical support can you please email me to david@koki.com.sg or davidlks83@yahoo.com as soon as possible if you see the thread.

Thanks all.

Best regards,
David Lim

  Re: Chart for SPC ?
Posted by Peter Kwan on May-17-2007 03:17
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Hi David,

Quite a number of ChartDirector customers are using ChartDirector for SPC Charts.

Note that ChartDirector does not automatically perform SPC statistical computations. For example, ChartDirector does not automatically compute the XBar values or UCL/LCL. After your code compute these values, ChartDirector can be used to plot them as line charts with threshold lines.

The ChartDirector API is very comprehensive and flexible, and it should allow you to add more features to the charts. It you have any specific features in mind, I may suggest how to achieve it with ChartDirector.

The ASE support staff (which is me) should have already sent an email to you. Note that we operate in the US EST time zone.

Hope this can help.

Regards
Peter Kwan

  Re: Chart for SPC ?
Posted by Davidlks on May-17-2007 09:19
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Hi Peter,

Thanks a lots, i already receive your mail.

Best regards,
David

  Re: Chart for SPC ?
Posted by Davidlks on May-17-2007 09:20
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Hi Peter,

Thanks a lots, i already receive your mail.

Best regards,
David

  Re: Chart for SPC ?
Posted by William.Cook@vishay.com on Aug-26-2023 09:18
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Could you send me the info on using chart director for SPC chart.   I am specifically interested in how to draw spec limits on different type of charts like histograms, probability charts.    I have the charts but am not sure the best way to add limits lines on the charts.

  Re: Chart for SPC ?
Posted by Peter Kwan on Aug-26-2023 14:00
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Hi William.Cook,

You can use Axis.addMark to add vertical or horizontal mark lines at the position you want, and/or to use Axis.addZone, XYChart.xZoneColor and XYChart.yZoneColor to color specific data range. See:

The following are some examples:

https://www.advsofteng.com/doc/cdnet.htm#markzone.htm
https://www.advsofteng.com/doc/cdnet.htm#markzone2.htm
https://www.advsofteng.com/doc/cdnet.htm#yzonecolor.htm
https://www.advsofteng.com/doc/cdnet.htm#xzonecolor.htm

Some old examples I can find in this forum are as follows (which shows that ChartDirector has been used in Statistical Process Control for a long time):

https://www.chartdir.com/forum/download_thread.php?bn=chartdir_general&pattern=spc&thread=1145452835#N1145464327

https://www.chartdir.com/forum/download_thread.php?bn=chartdir_general&thread=1153402586#N1153427124

Best Regards
Peter Kwan