DC offset removal problem using HP filter

Hi everyone,
I have acquired a strain gauge signal that has a dc offset in the signal due to the effect of gravity on the load, which needs to be removed... I could average the baseline and substract this from the signal; but I thought a highpass filter with a cutoff of 0.5Hz (signal sample rate is 2kHz) would also work...However, the filtered signal looks very strange (unfiltered signal on left; filtered signal on right... Any ideas why? Code with filter specs is attached.
Any comments greatly appreciated
Regards,
Jack
Attachments:
HP Filter.vi ‏20 KB

Hi Lyn,
Please see attached data file... Data were in .lvm; but i saved as .xlsx as i don't think I can attached .lvm files to the forum?
Raw, uncorrected load cell data in a column B ("Force (Filtered)") ... I would have though't that running a zero phase a 0.5Hz HP filter (by filtering forwards and backwards) would be a much simplier option for removing the effect of gravity of the leg at rest on the strain guage than finding a quiet period in the at rest signal, averaging it, then offsetting that value from the entire signal by substraction.... Perhaps not?
Thanks for taking the time to look at this for me.
Regards,
Jack
Attachments:
Load Cell Example data.xlsx ‏1260 KB

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<administrative_information>
    <creation_date>2005-07-04</creation_date>
Consequently, the file "show_card.xsl" is the responsible XSLT stylesheet, which looks like this:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:p2p="http://www.portal.p2p.com">
<xsl:output method="html"/>
<xsl:template match="p2p:commodity">
    <html>
    <body>
      <h2>XSLT Test</h2>
      Creation Date: <xsl:value-of select="p2p:administrative_information/p2p:creation_date"/>
    </body>
    </html>
</xsl:template>
</xsl:stylesheet>
The problem in the XSLT stylesheet is, that I want to access the XML document elements using their namespace. And this is exactly what does not work for me. On the other hand, if I remove the reference to the namespace:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:p2p="http://www.portal.p2p.com">
<xsl:output method="html"/>
<xsl:template match="commodity">
    <html>
    <body>
      <h2>XSLT Test</h2>
      Creation Date: <xsl:value-of select="administrative_information/creation_date"/>
    </body>
    </html>
</xsl:template>
</xsl:stylesheet>
the stylesheet works fine, but for some technical reasons, which I don't want to explain here, I have to use the namespace when accessing the XML document elements.
For technical reasons, I cannot change the format of the Schema document and also cannot change the format of the generated XML document. The only file I can change and control is the XSLT stylsheet.
My question is now, in the case described above, if there is any way to use the namespace in the sytlesheet when accessing the XML elements?
Any help is appreciated.
Cheers,
Adam Kreuschner

duggal.ashish wrote:
3. Some XML files contain a "iso-8859-1" character with character code 146 which appears like apostrophes but actually it is : -  and the problem is that words like cant are shown as can?t by database.http://en.wikipedia.org/wiki/ISO8859-1
Scroll down in that page and you'll see that the character code 146 -- which would be 92 in hexadecimal -- is in the "unused" area of ISO8859-1. I don't know where you got the idea that it represents some kind of apostrophe-like character but it doesn't.
Edit: Actually, I do know where you got that idea. You got it from Windows-1252:
http://en.wikipedia.org/wiki/Windows-1252
Not the same charset at all.

Replacement Path variable cannot be used in filter

After creating a variable of type replacement path with query I get the error message:
Errors: Variable ... cannot be used in 'Filter' 'Default Values'; remove
Does anyone know what is causing this message and how to prevent it?
Thanks.
Regards,
József.

Thanks for your response Bhargava,
Your answer did help me find the solution. When using a replacement path variable with query, you can only use the variable in the Characteristic Restrictions part of the Filters (not in the Default Values).
The characteristic itself can still be used for navigation.
p.s. Found that when copying a query some links to structures, like restricted key-figures, are kept in the metadata repository, even after removing them from the query. This can also cause error messages.
Regards,
József.

Validate xslt against JDK5 so we can remove the 'Use SAP XML Toolkit' flag

We are working on PI7.1 and have hit an issue with an XSLT mapping. We were getting an error when testing that said:
TransformerException during XSLT processing:
javax.xml.transform.TransformerException: com.sun.org.apache.xalan.internal.xsltc.TransletException: com.sun.org.apache.xalan.internal.xsltc.TransletException: java.io.FileNotFoundException
We found a few threads on SDN pointing us to using the 'Use SAP XML Toolkit' flag, which we'd not even noticed before. Ticking this flag did get us around the problem. Further investigation suggested to us, however, that this flag will not be available in future releases, so I guess our best solution would be to try and resolve the issues in our mapping against the current version of java (JDK5). When we use other tools such as XMLSPY they do not detect a problem with the XSLT. Can anyone point me to a tool that would enable us to validate our XSLT file against JDK5, which will provide us with error messages that will enable us to fix the error and therefore remove the 'Use SAP XML Toolkit' flag?
thanks,
Malcolm.

> Can anyone point me to a tool that would enable us to validate our XSLT file against JDK5, which will provide us with error messages that will enable us to fix the error and therefore remove the 'Use SAP XML Toolkit' flag?
I am sorry to have to say that even inside SAP nobody can answer this question.
In principle it will work when it is pure XSLT 1.1 but some commands from XSLT 2.0 might work also.

Safari crashes or will not quit also the same problem using Yahoo Mail

Iv been having a problem using Safari & Yahoo Mail. When opening specific e-mails or opening attachments withing the e-mail, Safari will crash. Not once or twice, but 2, 3, 4 or more times. Each time I send in a report to Apple telling them what is happening. I do not have the same problem if I use "Camino" with Yahoo Mail.
I'm also having problems in that there are times when Safari seems to just be sitting there and not opening a page or will not quit when I hit the "Quit Safari" button. It will just sit there and if I bring up the "Force Quit Application" it shows that Safari is (not responding). Then I have to Force Quit Safari to get it to do something.
Know this is really 2 situations, but does it mean that Safari is corrupted? Is it possible to have to much in Safari? To many bookmarks, to many RSS, things like that? Does Safari have it's own max like your HD?

Morning Maria,
Thanks for the help. I'll try to post the thing I found in the crash log, but it seems to be rather large. Checked and re-checked, but what I'm posting is the only thing that started or stopped like you said at the end. The entire thing runs for pages and pages. Remember I said that it's been an on going problem where Safari will crash 2,3,4 or more times in a 5 minute period. I send a report when ever that report window pops up. That adds up to a lot, LOL.
If I understand you right as well. You're saying that the Safari cache folder should show a big flat ZERO if the cache is emptied and then I go back to check the folder. Does that mean then that when I empty the cache from Safari>Empty Cache ... that it isn't doing exactly everything? So that I will have to start going to Preferences to do it or to remove that folder more?
BTW, does it hurt if I would remove and trash all those crash report logs that are in the files? Right now it shows 10.8MB in there.
Okay, not that this will help, but here is what I found on the Safari crash log:
Host Name: Macintosh
Date/Time: 2007-04-22 09:56:44.165 -0500
OS Version: 10.4.9 (Build 8P135)
Report Version: 4
Command: Safari
Path: /Applications/Safari.app/Contents/MacOS/Safari
Parent: WindowServer [58]
Version: 2.0.4 (419.3)
Build Version: 1
Project Name: WebBrowser
Source Version: 4190300
PID: 206
Thread: 0
Exception: EXCBADACCESS (0x0001)
Codes: KERNINVALIDADDRESS (0x0001) at 0x14218191
Thread 0 Crashed:
0 com.apple.WebCore 0x95d5e458 RenderArena::allocate(unsigned long) + 48
1 com.apple.WebCore 0x95d5f498 khtml::RenderStyle::operator new(unsigned long, RenderArena*) + 28
2 com.apple.WebCore 0x95d6ff80 khtml::CSSStyleSelector::styleForElement(DOM::ElementImpl*, khtml::RenderStyle*, bool) + 264
3 com.apple.WebCore 0x95d6fd70 DOM::NodeImpl::createRendererIfNeeded() + 104
4 com.apple.WebCore 0x95d6fcf0 DOM::ElementImpl::attach() + 24
5 com.apple.WebCore 0x95d6ed88 KHTMLParser::insertNode(DOM::NodeImpl*, bool) + 2440
6 com.apple.WebCore 0x95d6cfa0 KHTMLParser::parseToken(khtml::Token*) + 612
7 com.apple.WebCore 0x95d6a084 khtml::HTMLTokenizer::processToken() + 460
8 com.apple.WebCore 0x95d6b9c0 khtml::HTMLTokenizer::parseTag(khtml::TokenizerString&) + 6256
9 com.apple.WebCore 0x95d6990c khtml::HTMLTokenizer::write(khtml::TokenizerString const&, bool) + 928
10 com.apple.WebCore 0x95da34c4 khtml::HTMLTokenizer::timerEvent(QTimerEvent*) + 244
11 com.apple.WebCore 0x95da3384 -[KWQObjectTimerTarget sendTimerEvent] + 80
12 com.apple.Foundation 0x92be5f68 __NSFireTimer + 116
13 com.apple.CoreFoundation 0x907f2578 __CFRunLoopDoTimer + 184
14 com.apple.CoreFoundation 0x907deef8 __CFRunLoopRun + 1680
15 com.apple.CoreFoundation 0x907de4ac CFRunLoopRunSpecific + 268
16 com.apple.HIToolbox 0x9329bb20 RunCurrentEventLoopInMode + 264
17 com.apple.HIToolbox 0x9329b1b4 ReceiveNextEventCommon + 380
18 com.apple.HIToolbox 0x9329b020 BlockUntilNextEventMatchingListInMode + 96
19 com.apple.AppKit 0x937a0ae4 _DPSNextEvent + 384
20 com.apple.AppKit 0x937a07a8 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 116
21 com.apple.Safari 0x00006740 0x1000 + 22336
22 com.apple.AppKit 0x9379ccec -[NSApplication run] + 472
23 com.apple.AppKit 0x9388d87c NSApplicationMain + 452
24 com.apple.Safari 0x0005c77c 0x1000 + 374652
25 com.apple.Safari 0x0005c624 0x1000 + 374308
Thread 1:
0 libSystem.B.dylib 0x9000b6e8 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b63c mach_msg + 60
2 com.apple.CoreFoundation 0x907deba8 __CFRunLoopRun + 832
3 com.apple.CoreFoundation 0x907de4ac CFRunLoopRunSpecific + 268
4 com.apple.Foundation 0x92bf2170 -[NSRunLoop runMode:beforeDate:] + 172
5 com.apple.Foundation 0x92bf20a8 -[NSRunLoop run] + 76
6 com.apple.WebKit 0x95b86e30 +[WebFileDatabase _syncLoop:] + 176
7 com.apple.Foundation 0x92be31a0 forkThreadForFunction + 108
8 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 2:
0 libSystem.B.dylib 0x9000b6e8 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b63c mach_msg + 60
2 com.apple.CoreFoundation 0x907deba8 __CFRunLoopRun + 832
3 com.apple.CoreFoundation 0x907de4ac CFRunLoopRunSpecific + 268
4 com.apple.Foundation 0x92c0a6a8 +[NSURLConnection(NSURLConnectionInternal) _resourceLoadLoop:] + 264
5 com.apple.Foundation 0x92be31a0 forkThreadForFunction + 108
6 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 3:
0 libSystem.B.dylib 0x9000b6e8 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b63c mach_msg + 60
2 com.apple.CoreFoundation 0x907deba8 __CFRunLoopRun + 832
3 com.apple.CoreFoundation 0x907de4ac CFRunLoopRunSpecific + 268
4 com.apple.Foundation 0x92c0b7e8 +[NSURLCache _diskCacheSyncLoop:] + 152
5 com.apple.Foundation 0x92be31a0 forkThreadForFunction + 108
6 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 4:
0 libSystem.B.dylib 0x9001fc2c select + 12
1 com.apple.CoreFoundation 0x907f1434 __CFSocketManager + 472
2 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 5:
0 libSystem.B.dylib 0x9002c768 semaphorewait_signaltrap + 8
1 libSystem.B.dylib 0x9003124c pthreadcondwait + 480
2 com.apple.Foundation 0x92bea30c -[NSConditionLock lockWhenCondition:] + 68
3 com.apple.Syndication 0x9b13142c -[AsyncDB _run:] + 192
4 com.apple.Foundation 0x92be31a0 forkThreadForFunction + 108
5 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 6:
0 libSystem.B.dylib 0x9002c768 semaphorewait_signaltrap + 8
1 libSystem.B.dylib 0x9003124c pthreadcondwait + 480
2 com.apple.Foundation 0x92bea30c -[NSConditionLock lockWhenCondition:] + 68
3 com.apple.AppKit 0x9383d708 -[NSUIHeartBeat _heartBeatThread:] + 324
4 com.apple.Foundation 0x92be31a0 forkThreadForFunction + 108
5 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 7:
0 libSystem.B.dylib 0x90055648 semaphoretimedwait_signaltrap + 8
1 libSystem.B.dylib 0x90071e88 pthreadcond_timedwait_relativenp + 556
2 ...ple.CoreServices.CarbonCore 0x90bf74b8 TSWaitOnSemaphoreCommon + 176
3 ...ple.CoreServices.CarbonCore 0x90bf730c AsyncFileThread(void*) + 56
4 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 8:
0 libSystem.B.dylib 0x9000b6e8 machmsgtrap + 8
1 libSystem.B.dylib 0x9000b63c mach_msg + 60
2 ...romedia.Flash Player.plugin 0x061bb688 nativeShockwaveFlashTCallFrame + 1368296
3 libSystem.B.dylib 0x9002c0a8 pthreadbody + 96
Thread 0 crashed with PPC Thread State 64:
srr0: 0x0000000095d5e458 srr1: 0x000000000200f030 vrsave: 0x00000000fff00000
cr: 0x28024224 xer: 0x0000000000000004 lr: 0x0000000095d5f498 ctr: 0x0000000095fdf664
r0: 0x0000000095d5f498 r1: 0x00000000bfffe070 r2: 0x0000000005e9d4ac r3: 0x0000000014218191
r4: 0x000000000000003c r5: 0x0000000000000000 r6: 0x0000000000000001 r7: 0x0000000000000001
r8: 0x0000000005f02e81 r9: 0x0000000008119a40 r10: 0x0000000005f00e7d r11: 0x0000000005e9d470
r12: 0x0000000095fdf664 r13: 0x0000000000000000 r14: 0x0000000000000001 r15: 0x0000000000000001
r16: 0x0000000000000000 r17: 0x0000000000000000 r18: 0x00000000000064d7 r19: 0x0000000000000000
r20: 0x000000001017d27b r21: 0x00000000873141c0 r22: 0x0000000000000054 r23: 0x0000000000412a00
r24: 0x0000000000000000 r25: 0x0000000000000001 r26: 0x0000000008119a40 r27: 0x0000000008119a40
r28: 0x0000000000000000 r29: 0x0000000000000001 r30: 0x0000000007b91090 r31: 0x0000000095d6fe84
Binary Images Description:
0x1000 - 0xdcfff com.apple.Safari 2.0.4 (419.3) /Applications/Safari.app/Contents/MacOS/Safari
0x3734000 - 0x3736fff com.apple.textencoding.unicode 2.0 /System/Library/TextEncodings/Unicode Encodings.bundle/Contents/MacOS/Unicode Encodings
0x3fbb000 - 0x4023fff com.DivXInc.DivXDecoder 6.4.0 /Library/QuickTime/DivX Decoder.component/Contents/MacOS/DivX Decoder
0x5f05000 - 0x6219fff com.macromedia.Flash Player.plugin 9.0.28 (1.0.4f22) /Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player
0x8fe00000 - 0x8fe52fff dyld 46.12 /usr/lib/dyld
0x90000000 - 0x901bdfff libSystem.B.dylib /usr/lib/libSystem.B.dylib
0x90215000 - 0x9021afff libmathCommon.A.dylib /usr/lib/system/libmathCommon.A.dylib
0x9021c000 - 0x90269fff com.apple.CoreText 1.0.3 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreText.framework/Versions/A/CoreText
0x90294000 - 0x90345fff ATS /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ATS.framework/Versions/A/ATS
0x90374000 - 0x9072ffff com.apple.CoreGraphics 1.258.61 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/CoreGraphics
0x907bc000 - 0x90895fff com.apple.CoreFoundation 6.4.7 (368.28) /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x908de000 - 0x908defff com.apple.CoreServices 10.4 (???) /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x908e0000 - 0x909e2fff libicucore.A.dylib /usr/lib/libicucore.A.dylib
0x90a3c000 - 0x90ac0fff libobjc.A.dylib /usr/lib/libobjc.A.dylib
0x90aea000 - 0x90b5afff com.apple.framework.IOKit 1.4 (???) /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x90b70000 - 0x90b82fff libauto.dylib /usr/lib/libauto.dylib
0x90b89000 - 0x90e60fff com.apple.CoreServices.CarbonCore 681.10 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore
0x90ec6000 - 0x90f46fff com.apple.CoreServices.OSServices 4.1 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServi ces.framework/Versions/A/OSServices
0x90f90000 - 0x90fd1fff com.apple.CFNetwork 4.0 (129.20) /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwo rk.framework/Versions/A/CFNetwork
0x90fe6000 - 0x90ffefff com.apple.WebServices 1.1.2 (1.1.0) /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/WebServ icesCore.framework/Versions/A/WebServicesCore
0x9100e000 - 0x9108ffff com.apple.SearchKit 1.0.5 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchK it.framework/Versions/A/SearchKit
0x910d5000 - 0x910fffff com.apple.Metadata 10.4.4 (121.36) /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Metadata
0x91110000 - 0x9111efff libz.1.dylib /usr/lib/libz.1.dylib
0x91121000 - 0x912dcfff com.apple.security 4.6 (29770) /System/Library/Frameworks/Security.framework/Versions/A/Security
0x913db000 - 0x913e4fff com.apple.DiskArbitration 2.1 /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x913eb000 - 0x913f3fff libbsm.dylib /usr/lib/libbsm.dylib
0x913f7000 - 0x9141ffff com.apple.SystemConfiguration 1.8.3 /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfi guration
0x91432000 - 0x9143dfff libgcc_s.1.dylib /usr/lib/libgcc_s.1.dylib
0x91442000 - 0x914bdfff com.apple.audio.CoreAudio 3.0.4 /System/Library/Frameworks/CoreAudio.framework/Versions/A/CoreAudio
0x914fa000 - 0x914fafff com.apple.ApplicationServices 10.4 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Application Services
0x914fc000 - 0x91534fff com.apple.AE 1.5 (297) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ AE.framework/Versions/A/AE
0x9154f000 - 0x91621fff com.apple.ColorSync 4.4.9 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ColorSync.framework/Versions/A/ColorSync
0x91674000 - 0x91705fff com.apple.print.framework.PrintCore 4.6 (177.13) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ PrintCore.framework/Versions/A/PrintCore
0x9174c000 - 0x91803fff com.apple.QD 3.10.24 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ QD.framework/Versions/A/QD
0x91840000 - 0x9189efff com.apple.HIServices 1.5.3 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ HIServices.framework/Versions/A/HIServices
0x918cd000 - 0x918f1fff com.apple.LangAnalysis 1.6.1 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ LangAnalysis.framework/Versions/A/LangAnalysis
0x91905000 - 0x9192afff com.apple.FindByContent 1.5 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ FindByContent.framework/Versions/A/FindByContent
0x9193d000 - 0x9197ffff com.apple.LaunchServices 182 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ LaunchServices.framework/Versions/A/LaunchServices
0x9199b000 - 0x919affff com.apple.speech.synthesis.framework 3.3 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ SpeechSynthesis.framework/Versions/A/SpeechSynthesis
0x919bd000 - 0x91a03fff com.apple.ImageIO.framework 1.5.4 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/ImageIO
0x91a1a000 - 0x91ae1fff libcrypto.0.9.7.dylib /usr/lib/libcrypto.0.9.7.dylib
0x91b2f000 - 0x91b44fff libcups.2.dylib /usr/lib/libcups.2.dylib
0x91b49000 - 0x91b67fff libJPEG.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libJPEG.dylib
0x91b6d000 - 0x91c24fff libJP2.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libJP2.dylib
0x91c73000 - 0x91c77fff libGIF.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libGIF.dylib
0x91c79000 - 0x91ce1fff libRaw.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libRaw.dylib
0x91ce6000 - 0x91d23fff libTIFF.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libTIFF.dylib
0x91d2a000 - 0x91d43fff libPng.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libPng.dylib
0x91d48000 - 0x91d4bfff libRadiance.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libRadiance.dylib
0x91d4d000 - 0x91e2bfff libxml2.2.dylib /usr/lib/libxml2.2.dylib
0x91e4b000 - 0x91e4bfff com.apple.Accelerate 1.2.2 (Accelerate 1.2.2) /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
0x91e4d000 - 0x91f32fff com.apple.vImage 2.4 /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.fr amework/Versions/A/vImage
0x91f3a000 - 0x91f59fff com.apple.Accelerate.vecLib 3.2.2 (vecLib 3.2.2) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/vecLib
0x91fc5000 - 0x92033fff libvMisc.dylib /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libvMisc.dylib
0x9203e000 - 0x920d3fff libvDSP.dylib /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libvDSP.dylib
0x920ed000 - 0x92675fff libBLAS.dylib /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libBLAS.dylib
0x926a8000 - 0x929d3fff libLAPACK.dylib /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libLAPACK.dylib
0x92a03000 - 0x92af1fff libiconv.2.dylib /usr/lib/libiconv.2.dylib
0x92af4000 - 0x92b7cfff com.apple.DesktopServices 1.3.6 /System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/Desk topServicesPriv
0x92bbd000 - 0x92de8fff com.apple.Foundation 6.4.8 (567.29) /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x92f15000 - 0x92f33fff libGL.dylib /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
0x92f3e000 - 0x92f98fff libGLU.dylib /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib
0x92fb6000 - 0x92fb6fff com.apple.Carbon 10.4 (???) /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
0x92fb8000 - 0x92fccfff com.apple.ImageCapture 3.0 /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/ImageCapture. framework/Versions/A/ImageCapture
0x92fe4000 - 0x92ff4fff com.apple.speech.recognition.framework 3.4 /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SpeechRecogni tion.framework/Versions/A/SpeechRecognition
0x93000000 - 0x93015fff com.apple.securityhi 2.0 (203) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SecurityHI.fr amework/Versions/A/SecurityHI
0x93027000 - 0x930aefff com.apple.ink.framework 101.2 (69) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Ink.framework /Versions/A/Ink
0x930c2000 - 0x930cdfff com.apple.help 1.0.3 (32) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Help.framewor k/Versions/A/Help
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Problem using the Write to SGL VI and Read from SGL VI

Hello Sir, I have a problem using the Write to SGL VI. When I am trying to write the captured data using DAQ board to a SGL file, I am unable to store the data as desired. There might be some problem with the VI which I am using to write the data to SGL file. I am not able to figure out the minor problem I am facing. I am attaching a zip file which contains five files.
1) Acquire_Current_Binary_Exp.vi -> This is the VI which I used to store my data using Write to SGL file.
2) Retrive_BINARY_Data.vi -> This is the VI which I used to Read from SGL file and plot it
3) Binary_Capture -> This is the captured data using (1) which can be plotted using (2) and what I observed is the plot is different and also the time scare is not as expected.
4) Unexpected_Graph.png is the unexpected graph when I am using Write to SGL and Read from SGL to store and retrieve the data.
5) Expected_Graph.png -> This is the expected data format I supposed to get. I have obtained this plot when I have used write to LVM and read from LVM file to store and retrieve the data.
I tried a lot modifying the sub VI’s but it doesn’t work for me. What I think is I am doing some mistake while I am writing the data to SGL and Reading the data from SGL. Also, I don’t know the reason why my graph is not like (5) rather I am getting something like its in (4). Its totally different. You can also observe the difference between the time scale of (4) and (5).
Have a Good Day
Regards,
Krishna
Attachments:
LABVIEW_Files.zip ‏552 KB

As already discussed a while ago, your binary data does not contain timing information. You need to tell it the scan rate so it can reconstruct the time axis correcty.
From the data, it seems the sample file was recorded at 0.5MHz. Take the inverse and set the time increment. Voila!
Your sample file is two column data with one colum all zero. You need to set the number of columns to two, to only get the good data in channel 1.
Your acquisition program contains unecessary FOR loops, you can remove the inner loops without change in result.
It makes no sense to convert to SGL if you initialize the shift registers with an empty DBL array. You need to initialize with an empty SGL array.
(The code could be simplified quite a bit more, but this should give you some directions).
The attached zip shows some ideas (LabVIEW 7.1).
LabVIEW Champion . Do more with less code and in less time .
Attachments:
LabVIEW_FilesMOD.zip ‏195 KB

DC offset removal problem using HP filter

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