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[mathcad] RE: Mathcad 14 Results Display Errors

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[mathcad] RE: Mathcad 14 Results Display Errors
Author: Philip Oakley    Posted: Tue, 3 Jul 2007 21:45:00 +0100
Bill The problem would appear to be a new feature (V14), which is that the zero threshold can be set on every result equation. So you can't set a global value like you used to be able to do. So once you have a large sheet that is going wrong, you have to go round every result and change it's format (Format Result >> Tolerance tab) All you results are below the default 10^-15 value so display as zero. For those cases when you have an extra digit in the nth place, that is just binary rounding error [I assert that rather than checking it!] The other option is to add you preffered multiplier into the units place holder to get within 10^15 of your result. You should post this on the collab and to ptc support as a poor feature. Philip From: Bill Dumke "mailto:billd" Sent: 01 July 2007 4:30 AM To: Mathcad Discussion List Cc: Bill Dumke Subject: [mathcad] Mathcad 14 Results Display Errors I am having trouble with getting Mathcad 14 to display results correctly. In some cases, the exponential threshold does not work except when 17 decimal places are selected to be displayed, but even then additional numbers appear in the result at the 14th or 15th decimal places. I did a "mathcad /register" from the command line in the Mathcad 14 folder to re associate DLL files, but it did not help. Also did a repair of Mathcad 14 in Add or Remove Programs in Control Panel. That did not help either. See attached Mathcad 14 file. I hope the list still works. I have been getting 4 or 5 day delays on my submittals before they are posted on the Adeptscience web site.. Bill

[mathcad] Re: Mathcad 14 Results Display Errors
Author: Eden Mei    Posted: Sat, 7 Jul 2007 21:03:16 -0700
I'm unclear what the original problem is supposed to be. What did you think should be displayed? You have "Show trailing zeros" checked for all results and the number of zeros displayed correspond to the choice selected. If you reset the results settings, the results show up as "0", since the sheet default zero tolerance is 15. The "anomalous" 1 in the 15th decimal place is a consequence of selecting a number that is not exactly represented by binary fractions. TTFN, Eden From: Bill Dumke To: Mathcad Discussion List Cc: Bill Dumke Sent: Saturday, June 30, 2007 8:30 PM Subject: [mathcad] Mathcad 14 Results Display Errors I am having trouble with getting Mathcad 14 to display results correctly. In some cases, the exponential threshold does not work except when 17 decimal places are selected to be displayed, but even then additional numbers appear in the result at the 14th or 15th decimal places. I did a "mathcad /register" from the command line in the Mathcad 14 folder to re associate DLL files, but it did not help. Also did a repair of Mathcad 14 in Add or Remove Programs in Control Panel. That did not help either. See attached Mathcad 14 file. I hope the list still works. I have been getting 4 or 5 day delays on my submittals before they are posted on the Adeptscience web site.. Bill

[mathcad] Re: Mathcad 14 Results Display Errors
Author: Bill E Dumke    Posted: Mon, 9 Jul 2007 08:38:20 -0500
Eden, The whole point of scientific (and engineering notation) is the wide range over which numbers can be displayed with a specified number of significant digits. Mathcad's inability to correctly display very small numbers defeats the whole purpose of scientific and engineering notation. Bill ________________________________ From: eden mei "mailto:eden_mei" Sent: Saturday, July 07, 2007 11:03 PM To: Mathcad Discussion List Cc: Bill E Dumke Subject: [mathcad] Re: Mathcad 14 Results Display Errors I'm unclear what the original problem is supposed to be. What did you think should be displayed? You have "Show trailing zeros" checked for all results and the number of zeros displayed correspond to the choice selected. If you reset the results settings, the results show up as "0", since the sheet default zero tolerance is 15. The "anomalous" 1 in the 15th decimal place is a consequence of selecting a number that is not exactly represented by binary fractions. TTFN, Eden From: Bill Dumke "mailto:billd" To: Mathcad Discussion List "mailto:mathcad" Cc: Bill Dumke "mailto:bill.dumke" Sent: Saturday, June 30, 2007 8:30 PM Subject: [mathcad] Mathcad 14 Results Display Errors I am having trouble with getting Mathcad 14 to display results correctly. In some cases, the exponential threshold does not work except when 17 decimal places are selected to be displayed, but even then additional numbers appear in the result at the 14th or 15th decimal places. I did a "mathcad /register" from the command line in the Mathcad 14 folder to re associate DLL files, but it did not help. Also did a repair of Mathcad 14 in Add or Remove Programs in Control Panel. That did not help either. See attached Mathcad 14 file. I hope the list still works. I have been getting 4 or 5 day delays on my submittals before they are posted on the Adeptscience web site.. Bill ________________________________

[mathcad] Re: Mathcad 14 Results Display Errors
Author: Eden Mei    Posted: Wed, 11 Jul 2007 07:17:32 -0700
There have already been several postings explaining how to display such numbers in Mathcad. TTFN, Eden From: Bill E Dumke To: Mathcad Discussion List Sent: Monday, July 09, 2007 6:38 AM Subject: [mathcad] Re: Mathcad 14 Results Display Errors Eden, The whole point of scientific (and engineering notation) is the wide range over which numbers can be displayed with a specified number of significant digits. Mathcad's inability to correctly display very small numbers defeats the whole purpose of scientific and engineering notation. Bill

[mathcad] Re: Mathcad 14 Results Display Errors
Author: Tom Gutman    Posted: Wed, 11 Jul 2007 11:56:04 -0700
Mathcad has the ability to show all numbers representable in IEEE 64 bit format. That means numbers with magnitudes down to about 1E-300. Small enough for all practical uses. But Mathcad provides for the user to limit the display of small numbers. If you choose to set that limit at 1E-15 (the default) then small numbers display as zeros. If you choose to set that limit at 1E-307 (as I do) then all numbers will be shown as stored, no matter how small. The problem is your choice, not Mathcad's limitations. Tom Gutman From: Bill E Dumke "Bill.Dumke" To: Mathcad Discussion List "mathcad" Sent: Monday, July 9, 2007 6:38 AM Subject: [mathcad] Re: Mathcad 14 Results Display Errors Eden, The whole point of scientific (and engineering notation) is the wide range over which numbers can be displayed with a specified number of significant digits. Mathcad's inability to correctly display very small numbers defeats the whole purpose of scientific and engineering notation. Bill ________________________________ From: eden mei "mailto:eden_mei" Sent: Saturday, July 07, 2007 11:03 PM To: Mathcad Discussion List Cc: Bill E Dumke Subject: [mathcad] Re: Mathcad 14 Results Display Errors I'm unclear what the original problem is supposed to be. What did you think should be displayed? You have "Show trailing zeros" checked for all results and the number of zeros displayed correspond to the choice selected. If you reset the results settings, the results show up as "0", since the sheet default zero tolerance is 15. The "anomalous" 1 in the 15th decimal place is a consequence of selecting a number that is not exactly represented by binary fractions. TTFN, Eden From: Bill Dumke "mailto:billd" To: Mathcad Discussion List "mailto:mathcad" Cc: Bill Dumke "mailto:bill.dumke" Sent: Saturday, June 30, 2007 8:30 PM Subject: [mathcad] Mathcad 14 Results Display Errors I am having trouble with getting Mathcad 14 to display results correctly. In some cases, the exponential threshold does not work except when 17 decimal places are selected to be displayed, but even then additional numbers appear in the result at the 14th or 15th decimal places. I did a "mathcad /register" from the command line in the Mathcad 14 folder to re associate DLL files, but it did not help. Also did a repair of Mathcad 14 in Add or Remove Programs in Control Panel. That did not help either. See attached Mathcad 14 file. I hope the list still works. I have been getting 4 or 5 day delays on my submittals before they are posted on the Adeptscience web site.. Bill ________________________________ "mailto:leave-mathcad-87206D"

[mathcad] Re: Mathcad 14 Results Display Errors
Author: AUSTIN, Mike    Posted: Wed, 11 Jul 2007 12:49:07 +0100
Bill, In this respect, Mathcad 14 is an improvement on Mathcad 11.2, which displays all of the formats as zero! STRESSWORK Mike AUSTIN on behalf of AIRBUS-UK for Department - ESASU NTC D2 09J Phone: +44 (0)117 936 2688 Fax: +44 (0)117 936 5474 Mailto: "Mike.Austin" From: Bill E Dumke "mailto:Bill.Dumke" Sent: 09 July 2007 14:38 To: Mathcad Discussion List Subject: [mathcad] Re: Mathcad 14 Results Display Errors Eden, The whole point of scientific (and engineering notation) is the wide range over which numbers can be displayed with a specified number of significant digits. Mathcad's inability to correctly display very small numbers defeats the whole purpose of scientific and engineering notation. Bill _____ From: eden mei "mailto:eden_mei" Sent: Saturday, July 07, 2007 11:03 PM To: Mathcad Discussion List Cc: Bill E Dumke Subject: [mathcad] Re: Mathcad 14 Results Display Errors I'm unclear what the original problem is supposed to be. What did you think should be displayed? You have "Show trailing zeros" checked for all results and the number of zeros displayed correspond to the choice selected. If you reset the results settings, the results show up as "0", since the sheet default zero tolerance is 15. The "anomalous" 1 in the 15th decimal place is a consequence of selecting a number that is not exactly represented by binary fractions. TTFN, Eden From: Bill Dumke "mailto:billd" To: Mathcad Discussion List "mailto:mathcad" Cc: Bill Dumke "mailto:bill.dumke" Sent: Saturday, June 30, 2007 8:30 PM Subject: [mathcad] Mathcad 14 Results Display Errors I am having trouble with getting Mathcad 14 to display results correctly. In some cases, the exponential threshold does not work except when 17 decimal places are selected to be displayed, but even then additional numbers appear in the result at the 14th or 15th decimal places. I did a "mathcad /register" from the command line in the Mathcad 14 folder to re associate DLL files, but it did not help. Also did a repair of Mathcad 14 in Add or Remove Programs in Control Panel. That did not help either. See attached Mathcad 14 file. I hope the list still works. I have been getting 4 or 5 day delays on my submittals before they are posted on the Adeptscience web site.. Bill _____ This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. This e-mail and any attachment may contain confidential and/or privileged information. If you have received this e-mail and/or attachment in error, please notify the sender immediately and delete the e-mail and any attachment from your system. If you are not the intended recipient you must not copy, distribute, disclose or use the contents of the e-mail or any attachment. All e-mail sent to or from this address may be accessed by someone other than the recipient for system management and security reasons or for other lawful purposes. Airbus UK Limited is registered in England and Wales under company number 3468788. The company's registered office is at New Filton House, Filton, Bristol, BS99 7AR.

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