Interpolation in DIAdem 10.2

Hi,
How to apply interpolation in DIAdem 10.2??
-Waiting for your repsonse
Priya

Hi Priya,
Use the ANALYSIS function called "Linear Mapping", found in the "Curve Fitting" palette. You will need to create a new channel with the desired X values that you want to interpolate onto. If those values happen to be equidistant you can create the new channel with the ANALYSIS function called "Generate Numeric Channel", found in the "Channel Functions" palette.
Brad Turpin
DIAdem Product Support Engineer
National Instruments

Similar Messages

Deactivate the automatic interpolation of data in DIAdem

Bonjour!
Nous sommes intéressés à désactiver l'interpolation que DIAdem fait automatiquement des données manquantes d'une base de données MySQL. En fait nous voudrions fixer une valeur de plage manquante à partir de laquelle l'interpolation des données ne se ferait plus. Par exemple: si les données sont absentes sur moins de 30 minutes, interpoler, si les données sont absentes sur plus de 30 minutes, ne pas interpoler. Est-ce possible de donner ce paramètre à DIAdem? Merci!

Hi frpic76,
Let me repeat back to you in English what I think you're asking and then give you a few thoughts-- unfortunately my ability to write French is even worse than my ability to read it. It sounds like you want to apply interpolation to your aquired data only when the region of missing data is within a certain minimum amount, but if you have data missing for much longer intervals (say, between tests run in different months) you do not want any interpolation. This sounds reasonable enough. You also mention that you are storing the data in a MySQL data base, so I'm surprised that you can not query out only the data you want (which presumably all falls into the category of needing interpolation).
I'm also unclear what you mean by interpolation. Normally I would understand that to mean imposing an expected timebase on data that was acquired at larger time intervals or at irregular time intervals, wherby you determine the interpolated Y values based on weighted linear extrapolation from the closest adjacent acquired values. But DIAdem does not do this automatically, as you seem to suggest. What DIAdem does do is plot all isolated XY cartesian pairs on a VIEW or REPORT graph, but here DIAdem just connects each individual graphed data point to the next data point with a straight line-- the intervening values are neither calculated nor regular. Still, if this is what you mean, then there are two easy solutions. First, you can insert a NoValue after the end of the values from the first data set and before the values of the second data set-- graphs in VIEW and REPORT will not plot a line to a NoValue. Alternatively, you could change your SQL query to only read into DIAdem the data from one measurement at a time.
Feel free to ask follow-up questions in English or French,
Brad Turpin
DIAdem Product Support Engineer
National Instruments

How do I code a 2-D look-up table in a DIadem script?

Based on two existing Diadem variables, what is the syntax for doing a
linear interpolation inside a 6 x 5 table to calculate a third value
that is a function of both of the first two variables? This would
be similar to doing a horizontal and a vertical lookup in Excel.

Hi Brad,
Sorry I wasn't more specific. I've copied the entire table
below; I can reference in any manner that would make sense; its entries
are constants. First I'd like to check the value of a Diadem
variable, 'efficiency', to see if it's between 0.2 and 0.7 (the first
row of the table). If it is outside that range, then the new
variable 'bypass' should be set to zero. Then I'd like to check
the Diadem variable "utility" to be within 5 and 50 inclusive (the
first column of the table). If it is outside the range, then
again bypass should equal zero. If efficiency and utility are
both within range, then I'd like to linearly interpolate between the
values of the table (based on efficiency and utility) to calculate
bypass.
0.2
0.3
0.4
0.5
0.6
0.7
5
1.5
2
3
3.5
4.5
6
8
1.8
2.9
4.2
5
10.9
15.3
10
2
3.5
5
7
14
21.5
30
4
8
17
31
40
80
50
5.5
16
17
31
40
80
Thank you for your help - aviatrix.

Convert excel vba to diadem script

I have a working excel spreadsheet that can interpolate z given and x,y using a matrix lookup table. I am attaching the excel file. I would like to import this functionality into Diadem. Basically, I collect Engine Speed and System Pressure, and I would like to know what the resulting Compressor Output (l/min) equals.
This data is being collected from a vehicle at 100Hz sample rate, and this would greatly help with the data analysis.
The excel user defined functions are from www.tushar-mehta.com
Any assistance would be greatly appreciated.
Solved!
Go to Solution.
Attachments:
Compressor Map.xls ‏55 KB

Brad,
Thank you for your time and assistance. You are correct that I don't want to just do one at a time. My ultimate goal is to create a new channel with the returned z values and then I will be summing up the values to give a total compressor output in liters for the entire run.
The compressor is only running when "Governor" = 0
The "Compressor_Speed" = "Drv_Ratio" x "Eng_Speed" when the above condition is true.
Using the new values: "Compressor_Speed" as X and "System_Pressure" as Y create a new channel "Compressor_Output" using a lookup table to interpolate the values.
So... Given:
Recorded Values
Generated Values
Calculated Values
Lookup Table Values
Row
Governor
Eng_Speed
System_Pressure
Drv_Ratio
Compressor Speed
Compressor_Output
22880
0
1255
9.213
1.08
1355.4
Interpolated value
22881
0
1255
9.213
1.08
1355.4
Interpolated value
22882
0
1255
9.213
1.08
1355.4
Interpolated value
22883
0
1255
9.213
1.08
1355.4
Interpolated value
22884
0
1254
9.213
1.08
1354.32
Interpolated value
22885
0
1254
9.213
1.08
1354.32
Interpolated value
22886
1
1254
9.216
1.08
0
0
22887
1
1254
9.216
1.08
0
0
22888
1
1254
9.216
1.08
0
0
22889
1
1254
9.216
1.08
0
0
Then after running this on the entire data set I will be summing "Compressor_Output" to figure out the total ammount of air processed by the compressor.

Schnittpunkte interpolierter Kurven

Hallo zusammen,
soweit ich weiss gibt es keinen DIAdem-Befehl mit dem sich die Schnittpunkte von per Akima-Spline Interpolierten Kurven direkt berechnen lassen, oder habe ich da was übersehen?
Ich muss die Schnittpunkte von Kurven bestimmen die aus wenigen Messpunkten bestehen und die für den Report durch Akima-Splines "verbunden" werden. Momentan berechne ich die Schnittpunkte indem ich die (interpolierten) Kanäle voneinander abziehe und mit PNo den Wert suche der Null am nächsten ist.
Für Kurven mit steil abfallenden Flanken ist das aber leider zu ungenau, es sei den ich berechne die Akima Splines mit 10000 oder mehr Stützwerten, was aber in den meisten fällen überflüssig ist. Was ich bräuchte wäre eine Funktion die die Schnittpunkte iterativ a la Newton-Raphson Verfahren oder änlich berechnet.
Habt Ihr eine Idee wie ich das am besten löse?
Danke,
Elmar
Attachments:
Schnittpunkte.pdf ‏8 KB

Hallo Walter,
ich habe das Problem jetzt vorerst so gelöst das ich in den Bereichen in denen sich die Schnittpunkte befinden die Stützstellenanzahl stark erhöhe.
Den Algorithmus in VBS nachzubilden war mir zu mühsam.
Ich fände es sehr gut wenn DIAdem zukünftig eine Funktion hätte um Schnittpunkte zu berechnen. Bei dieser Funktion sollte die Interpolations-Methode die verwendet wird wählbar sein (linear, Akima, etc.).
Das würde uns die Arbeit sehr erleichtern da wir oft Schnittpunkte zwischen zwei gemessenen und interpolierten Kurven berechnen müssen.
Gruss
Elmar

Diadem 3D Model Annotation

HI, I am using Labview and DIadem to test and grind out fault isolation of a complex engine system where I want to put the engine 3D Model into a display and highlight or annotate it for instruction to the operator for mainteneance and repair. How should I do this for optimal design in these 2 products?
Solved!
Go to Solution.

Hello Brad/Walter,
We are currently trying to visualize the emission distribution output of a catalyst. We are looking for a way to color the housing of the catalyst (the steel parts) in 1 color (f.e. Gray) and the catalyst (brick/substrate) should color depending on the outputs.
When I import the model in diadem it has all different colors (Even without any sensors assigned). (See picture 1).
I know that it is possible to assign high values to color the part in 1 color, since the complexity of the part I need about 1000 sensors to get it in one color.
In the Diadem example (the 3D-model of the foot and pressure) the foot is totally blue and the nails are white. At the nails no sensors are assigned but still they keep the white color.
I would like to know how this example is made and if I can use the same technique for my parts?
Walter Rick and Peter Schutte visitted DAF a few weeks ago, their tip to create a ring around the parts and assign the high values around this ring did't work since diadem interpolated the values.
Hope to hear from you soon,
Thanks in Advance!
Regards,
Dennis
Attachments:
Picture 1.png ‏207 KB
Diadem 3D-model example.png ‏138 KB

Exported data shouldn't be interpolated, but is

I want to automatically extract data from my database immediately following an experiment. The file name is given and the start and stop timestamps are defined in other routines. What I am having trouble with, is ensuring that the data exported is not interpolated, but rather exported more as "steps". For example, if I set a setpoint value of 5 on a flow controller at time=10, and then set another setpoint value of 40 at time=20, I want the setpoint for (10=< time < 20) to be 5, and not some value interpolated between 5 and 40. The attached routine interpolates the values inbetween the two setpoints, which is very bad.
How can I export this data without the interpolation? Is there a better way of doing this? I am s
tarting to look into exporting to DIAdem, but will post a question about that in another thread.
Attachments:
extract_data_from_database_-_sub_routine_normal.vi ‏62 KB

The "Write Traces To Spreadsheet.vi interpolates the data like you described and there is no way to change this behavior.
Instead using this vi you should use the Read Traces (Numeric).vi that has an option for turning interpolation on and off. This vi doesn't write the data to a file so you will need to add some array and file handling (like the "Write to Spreadsheet.vi").
Best regards,
Jochen Klier
NI-Germany

DIAdem 9.1; Windows2000; right problem; "Configuration-Drive Write Protected" for USER

Hallo community !
similar to these threads
http://forums.ni.com/ni/board/message?board.id=60&message.id=322&requireLogin=False
http://forums.ni.com/ni/board/message?board.id=60&message.id=647&requireLogin=False
i run into problems working with DIAdem 9.1 on Windows 2000 SP4!
The Diadem installation went quite well.
My problem:
only "Administrator" and "Power User" have the privilige to "WRITE" to the DIAdem install directory.
Trying to start Diadem as non priviliged USER I get something like:
DIAdem Configuration-Drive "C:\PROGRAM FILES\ NATIONAL INSTRUMENT\DIADEM 9.10" WRITE PROTECTED!
I installed & started DIAdem for one
time with Administrator rights. I activated the Product and exported
the KEY to a License Server. Everything works fine for Power Users an
Administrators. Only "simple" USERs are not able to start Diadem due to
missing WRITE permissions. i can't grand this permissions to
normal USERs :-(
Playing around in Registry -> "RegWriteAccessAllow" ("0","1") (DWORD) (HKEY_LOCAL_MACHINE/Software/National Instruments/Diadem/9.10),
didn't solved the problem.
I switched back to "local License" Managment (local Key files) but the Probelm persists.
thanks in advance
P.S.
Quote: "You have to be at least a "Power User" in Windows 2000 to run DIAdem in Windows 2000."
http://forums.ni.com/ni/board/message?board.id=60&message.id=102&requireLogin=False
is this right ?
Message Edited by DirkT on 08-01-2005 03:58 PM
Message Edited by DirkT on 08-01-2005 04:02 PM

Hi DirkT,
Running DIAdem with User rights has different aspects we need to look at.
1) Registry Write Access
Launching DIAdem the first time with administrative rights registers some OLE components in the registry. After this step no more Admin rights are necessary for the registry. However running DIAdem as user might result in error messages as DIAdem tries to re-register the components again. You can avoid this by setting the RegWriteAccessAllow Key to 0 (see online help under "Administrator Notes")
2) File / Folder Write Access to the DIAdem Installation Folder
DIAdem needs write access to certain files e.g. the error logfile DEM_ERRS.001 or DESKTOP.DDD when saving configurations. You may change the folder where these file are being stored and searched for to a writeable folder by launching DIAdem with the "/d<NewFolder\MyDesktop.ddd>" start parameter or by setting the environment variable "DemDDD" to that folder. Then move the following files from the DIAdem installation folder to your new writeable folder:
*.ddd
userpar.par
dem_errs.*
3) File / Folder Write Access to other Folders
There are a number of other folders that DIAdem 9.x needs write access to and which cannot be changed. All of these folders are located by default under "%ProgramFiles%\National Instruments\Shared". Currently you need your Admin to give you write access to that folder and below
For future versions of DIAdem the team is working to make running under user rights easier.
Hope that helps,
Marcus

Y axis auto scale not working in DIAdem 11

Hi
A few years ago I created a user dialog box for selecting and displaying channels in DIAdem view.
It worked fine for all DIAdem 10.X releases, but for DIAdem 11.X there is a problem with the y-axis scaling.
The channels are displayd as [n Systems (Linear)]
In DIAdem 10.X the y-axis for each separate graph would be scaled automatically accoring to the min. and max. values of the displayed channel.
In DIAdem 11.X the y-axis for each graph is scaled from 55.0397 to 133.7655.... for all channels, no matter what the values are for the displayed channel.
When I click the "Zoom Off" button the scaling becomes correct.
What do I need to put in to my script to make the y-axis scale correctly?
Below is the code that is used to set the scaling (no scaling for Y axis is set):
    R1 = SelectedStartTime 'this is a variable defined earlier in the code
    R2 = SelectedEndTime 'this is a variable defined earlier in the code
   View.ActiveSheet.Cursor.X1 = R1
   View.ActiveSheet.Cursor.X2 = R2
   View.ActiveSheet.Areas(1).DisplayObj.XScaling = "RangeZoom"
I've tried adding this code, to no effect:
    View.ActiveSheet.Areas(1).DisplayObj.YScaling = "n systems [phys.]"
   View.ActiveSheet.Areas(1).DisplayObj.YScalingMode = "automatic"
Solved!
Go to Solution.

I tried with Macro recording and Ctrl+A and the result was
Option Explicit 'Forces the explicit declaration of all the variables in a script.
R1 = 30
R2 = 52
Call View.NewLayout()
View.Sheets("Sheet 1").Areas("Area : 1").DisplayObjType = "CurveChart2D"
Dim oMyDisplayObj
Set oMyDisplayObj = View.Sheets("Sheet 1").Areas("Area : 1").DisplayObj
oMyDisplayObj.Curves.Add "[1]/Time", "[1]/Speed"
oMyDisplayObj.YScalingMode ="automatic"
oMyDisplayObj.Abscissa ="X-Cursor"
oMyDisplayObj.Ordinate ="Y-Cursor"
View.ActiveSheet.Cursor.X1 = R1
View.ActiveSheet.Cursor.X2 = R2
View.Sheets("Sheet 1").Areas("Area : 1").DisplayObj.XScalingMode = "RangeZoom"
WndShow "VIEW", ""
which seems to work fine. So there is only one difference to your code which is
.XScalingMode
instead of XScaling. Does changing this work with your code?

Improving graphics performance in DIAdem 11.0 Report?

Dear Forum,
when working on a Report layout, the poor graphic performance of DIAdem is a real problem for me.
For example, many diagrams with lots of data are on one page. One opens the proficiencies of one of the diagrams and changes e.g. the curves color or whatever and closes the dialog window. After this, the whole Report page is refreshed - wich takes up to one minute, depending on the amount of data displayed.
The strange thing is, when I close the given dialog window, and while the report page is being refreshed sent DIAdem to the taskbar and open any other application window, the process of refreshing the screen takes only 1 second instead of 30 seconds.
The question is: Is there a tweak to improve the speed how DIAdem refreshes the report page? Or is there any workaround other than switching applications during refreshing?
Thanks a lot.
Greetings from Germany
Oliver

Hello Oliver,
The easiest way to speed up the graphics performance in Report with large data files (or 3D graphs with lots of nodes) is to turn off the "Data Layer" (German: "Datenebene") in the "View" menu (German: "Ansicht").
That function basically turns off the display of all data in Report, but retains the axis systems, texts, etc., so you can still move them, place them and edit them without having to guess sizes. Once you're done with the report, simply turn the data layer back on and you're ready to create a PDF, print or save the result as an image file (JPG, BMB, etc.).
I think the performance difference you described (1 vs. 30 seconds) is due to the fact that once DIAdem has drawn a page, it retains an image in memory and will simply draw that image when you bring DIAdem to the foreground (or maximize it). After any edits you make to the report (e.g. change the color of a graph), DIAdem redraws the complete page from scratch, which takes much longer then just re-displaying an image that has already been drawn previously. Someone from the DIAdem R&D team could probably do a better job explaining this, but I think this is the explanation for the time difference in drawing.
Anyway, the "Data Layer" trick should hopefully solve your problem, let us know if that works for you.
Greeting from Austin, TX.
Otmar D. Foehner
Business Development Manager
DIAdem and Test Data Management
National Instruments
Austin, TX - USA
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."

Animated gif interpolation

i want to export some animated gifs using quicktime player 7. but i dont want antialiasing / interpolation, - i rather want every pixel to be translated to e.g 100 pixels directly. so if the gif is 16 * 16 px, i get a .mov at 160 * 160 that look 'superpixelated'. can i do that with qt pro, or fcp or whatever?

sorry for letting you think i want to achieve something crazy impossible. i just dont want the interpolation when going up in size.

DIAdem Report express VI works only with a single sheet template??

Hi,
I'm very new to Diadem and I'm using the 2011 evaluation version to try a report generation of LabView data (2013 version, evaluation also). I'm using the "DIAdem Report" express VI to generate a 2 pages, quite simple report; the first page has to contain some pictures and free text to be compiled with Labview strings, and the second page has to show an XY chart. The goal is to export in PDF file format.
Creating two separates TDR report models for each page and calling two instances of the DIAdem Report, the report is generated correctly with the expected value in two separate pdf files. If I'm using a report template with the two previous pages loaded in two sheets, the text value and the XY data are not loaded in the PDF file, causing a two pages empty export (only images, default text and chart border are visible).
I'm missing something? Attached a TDR file that reproduce the malfunction.
Many thanks in advance.
Solved!
Go to Solution.
Attachments:
1+2.TDR ‏59 KB

WorldTraveler
When I have a report that has multiple pages (Over 5) I like to use one tdr file for each of the pages, and then use the report append feature to make a resulting tdr and then a PDF.
(Search for report appending)
I make one cover tdr and one summary.tdr file, and then work to try to make the other sheets as reusable as possible. That way I can build each resulting large TDR from a appending of as many smaller tdr files as needed. This really cuts down on the maintenance time for reports, and results in large PDF at the end, so the users do not know the difference.
Paul

Error 7 occurred at _createExplicitChildObject.vi DIAdem report express

I am using DIAdem Report express in LabVIEW. I made a change in the file name and now it works most of the time but is generating an error. Sometimes it doesn't work.
C:\Neuronetrix_Sync\Development\LabVIEW Test System\SC-1673\Logs\110091507\110091507 Frequency Response 5983823
This is the file path, it is constructed using string tools and then converted using string to path, then create folder then piped to the DIADEM report and Export Image function.
I get an error that cancels out the program the first time, then on subsequent runs it works just fine but still generates an error.
Error 7 occurred at _createExplicitChildObject.vi
Possible reason(s):
LabVIEW: File not found. The file might have been moved or deleted, or the file path might be incorrectly formatted for the operating system. For example, use \ as path separators on Windows, : on Mac OS, and / on Linux. Verify that the path is correct using the command prompt or file explorer.
Error 7 occurred at _createExplicitChildObject.vi
Possible reason(s):
LabVIEW: File not found. The file might have been moved or deleted, or the file path might be incorrectly formatted for the operating system. For example, use \ as path separators on Windows, : on Mac OS, and / on Linux. Verify that the path is correct using the command prompt or file explorer.
-Regards
eximo
UofL Bioengineering M.S.
Neuronetrix
"I had rather be right than be president" -Henry Clay
Attachments:
FILE name error.png ‏18 KB

In the screen shot you can see I am using to DIAdem expresses. When I was using just one express, and have everything wired up correctly, and everything works, i'm still getting the error.
-Regards
eximo
UofL Bioengineering M.S.
Neuronetrix
"I had rather be right than be president" -Henry Clay

Difference between diadem and LabVIEW Report Generation Toolkit

I want to expand LabVIEW's reporting capabilities. Can someone tell me what the difference is between DIAdem and the LabVIEW Report Generation Toolkit for Microsoft Office.

Hello Mr Bean,
There are several major differences between the two solutions. I'll try and outline them as good as I can ...
The biggest different is that LabVIEW and its toolkits are programming tools and DIAdem is a ready to run application.
The LabVIEW Report Generation Toolkit basically provides an extensive library of VIs that allow you to connect LabVIEW to the MS Office library and create and edit reports in Word and Excel.
DIAdem is a stand alone application that was designed to post-process data from various sources. The tools included in DIAdem are:
1. NAVIGATOR: Allows you to import data from files (ASCII, binary, Excel, etc.) as well as DataBases (SQL/ODBC, Citadel, ASAM, etc.). The unique DataPlugin technology available within DIAdem allows you to import vitually and data file by creating a DataPlugin that describes the data format and gets linked to DIAdem. More information at: http://www.ni.com/diadem/dataplugins.htm
2. VIEW: Graphical and Numerical data inspection tool. Use cursors to zoom and scroll through your data, edit your data graphically and numerically and compare different tests.
3. ANALYSIS: DIAdem has a wide range of analysis functions, ranging from simple functions like integration and differentiation to FFTs, Order analysis and 3D data analysis.
4. REPORT: The DIAdem REPORT tool allows you to create reusable report layouts that can contain multiple axis systems (2D, 3D and polar plots) as well as tables (2D and 3D) and variables. The REPORT tool generates templates that can be usedwith multiple data sets due to the inclusion of automatic (or manula if required) scaling as well as extensive use of variables for annotations. Finished reports can be exported to printers, graphics files, the Windows Clipboard, HTML pages and PDF files (PDF writing is build into DIAdem, no extra software required). Using Scripts, it is also possible to create Word, Excel or Powerpoint reports from DIAdem automatically.
5. SCRIPT: The DIAdem scripting tools allows users to record macros or write scripts that automate complete sequences, for the import of data, via extensive analysis, to creating a publication ready report. Scripts can make reports "intelligent" by modifying the appearance of a report based on the data or calculation results that are going to be displayed in the report.
I recommend you check out the following link for more information: http://www.ni.com/diadem/
DIAdem is an extremly powerful tool for report generation. I am leaving to go on a business trip to Asia, but I would be more than happy to give you an Web presentation on DIAdem after I have returned. We could use your data and create a DIAdem report Script together online. My Email address is [email protected] and I will be back the week of Thanksgiving.
Otmar
Otmar D. Foehner
Business Development Manager
DIAdem and Test Data Management
National Instruments
Austin, TX - USA
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."

Questions on Saving and mining data with Labview and DIAdem

Hi,
I am sampling two signals at 200k sampling rate. I am trying to save the data on harddisk and analyzing the data using DIAdem.
If I save the data using mesurement file format .tdm and .lvm, the file size will be about 4 Gigabytes for only 10 mins' acquisition. It is very slow to process it.
I used the software Clampex and pCLAMP(Axon Instruments) before. At the same 200k sampling rate and also acquiring two signals, these programs save the data as .atf format and the size is only 400 MB for 10 mins' acquisition.
I wonder if there is also a good way to handle this situation using Labview and DIAdem, and how to do it?

Hi, Jonathan:
I tried the TDM binary file format. The file size is 800 MB per min acquisition and it will take a long time to just open these files. For my application, I have to take data for several hours. I am looking for a way to reduce the size of files.
Is there any other type of file format that can reduce the size significantly and can be handled easily?

Interpolation in DIAdem 10.2

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