TDMS 1 d table timestamp

Similar Questions

• Find delta table timestamp

  Hi, I have to determine an evolution of the timestamps by program.  See attachment.  Time elapsed between the elements of the array is about 8 seconds.  How would I find this delta?

  Cameron,

  Thanks for the reply.  I actually thought about it using "remove table" twice of in a loop For.  See the updated extract.  The relative time has been determined for a 3D application tracing.  I thought that 15 minutes by default in 1904 (LabVIEW) is the same 15 minutes today and I found a difference between timestamp1, timestamp2!  :-) John

• How do VI with timestamp table entry

  I'm doing a sub - VI for a program and I need to have a double array, boolean and an array of time as an entry stamp. I can't find a way to mark the entrance with a table timestamp however indicator. My only choice seems to be double and Sub. Is it possible that I can do this?

  You have a block of empty array on your front panel and then move there a timestamp control.

• Get track List - Last Timestamp returns a time one hour behind

  Hello

  I use the DSC module to create traces.  I need the timestamp of the last of a trace.  When I go to the track via MAX (export to text file), I see all timestamps in the trace.  When I use the "Get Trace List.vi" it returns is an hour behind.  I would make up for just an hour, but I thought that I saw that it compensates for return after writing again.  I have a complex code, and after having thought about it, I think the "Get Trace List.vi' should work.  I tried to turn the time zone but this makes no difference.  A solution I just think now is to use the track of the reading, but use a more recent time interval.  In my case I do not know the more lately but if I got the data from last month and used the max/min chart on the table timestamp incomming; It would work.  OK, so I thought about a work around, but maybe someone knows something about why this last time stamp is an hour off the coast?

  Thank you

  Matt

  You have not included everything essential subVIs, but I suspect a problem with the setting "Daylight Saving Time".

• Doubt with table design!

  Hi friends,
  
  
  I studied that we can create tables with that name clause ORACLE SERVER RESERVES like select, insert etc. Recenty I came across a request
  

  Create table TIMESTAMP (
                           ENO NUMBER(1)
                         );

  TIMESTAMP is a data type, but the table is created without any errors.
  
  In this example
  

  create table "SELECT" (
                          ENO NUMBER(1)
                        );

  How does differntiate oracle it the name of the table and the SELECT clause. I did not understand the logic also what difference do when you give the name of the table of double quotes.
  
  Kind regards
  Maury

  'Identifiers nonquoted cannot be words reserved for the Oracle server. "Quoted identifiers can be reserved words, * although this isn't recommended.*.
  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14200/sql_elements008.htm#sthref723

  SQL> create table select (eno number(1));
  create table select (eno number(1))
               *
  ERROR at line 1:
  ORA-00903: invalid table name
  
  SQL> create table "SELECT" (eno number(1));
  
  Table created.
  
  SQL> select * from select;
  select * from select
                *
  ERROR at line 1:
  ORA-00903: invalid table name
  
  SQL> select * from "SELECT";
  
  no rows selected
  
  SQL> drop table select purge;
  drop table select purge
             *
  ERROR at line 1:
  ORA-00903: invalid table name
  
  SQL> drop table "SELECT" purge;
  
  Table dropped.
  
  SQL> 
  

• How to generate a field real-time tiara?

  Hello

  I tried a lot of things, but it is not working properly.

  I logfiles with the data of one ore more test ports. All entries in log file has a time stamp.  Timestamps are not equidistant. I can read the log file and get a table 1 d (n long elements) of the timestamps and a table 2D data (n x m elements m test ports).

  How to generate a report in the tiara with the time that x-axis it? The difficult is, I can't transfer the timescale to tiara.

  I could first convert timestamps double and double transfer al. This does not solve my problem. The tiara-channel resulting if of type 'float' and not 'time '. I need a script to swich the channel to 'time'. I see no solution to load a layout of report (TDR), to call a script to transfer data from additional text.

  Hello bohm,.

  When you write a channel timestamp in a PDM file, tiara automatically identifies it as a weather channel. So when you export the right data, you will get good results ;-).

  To illustrate this, I wrote an example VI: it creates two TDMS files with random timestamps and displays then the two files into a single report of DIAdem. I hope that you find it useful.

  Best regards
  SFK

• Is there a simple model of blood pressure for 3.2.2 numbers

  I need a model simple blood pressure for 3.2.2 numbers or earlier. Because I don't have a working knowledge of numbers 3.2.2 I hope someone can help me here. I need an auto update of date and time, systolic and diastolic pressures, and a Notes column wider. Thanks for your help since an old geezer.

  There is no integrated model, however you describe what you can do by following the following instructions:

  (1) open a new document using the menu item "file > new...» »

  (2) choose the 'Basic' category on the left, then "Blank" of the selections available:

  

  (2) to facilitate the entry of the date and time, I suggest the creation of a single cell table, and then enter the formula = now().  To do this, follow these steps:

  Click and hold on the A2 from the table cell (until you see the 'lift' on the table cell.

  

  Drag the cell above your table on the screen.

  You should see a new table like this:

  

  Double-click the text "Table 2", then update the text therefore reads "TimeStamp" (it's just a name is not really important).  Select cell A1 in table 'TimeStamp', then type

  = Now()

  shortcut for this is

  A1 = Now)

  

  Now in the original table, name the columns as the "Date", "Systolic", "Diastolic" and "Notes"... like this:

  

  now make the column notes wide by selecting the column for Notes (column D).  To do this click on the "D" at the top of the column.

  Now open formatter table by clicking on the 'Format' button at the top right, and then by selecting the segment 'Table':

  

  adjust the value for the width of the "column" down as necessary

  to enter the date in a row, click the cell in the table "TimeStamp" and select the menu item "Edition > copy" (or use the + c key combination)

  now select the cell where you want the date and time, and then select the menu item "Edition > paste formula results.

  now enter the reading notes

• BEFORE the UPDATE of relaxation with time stamp does not work as expected

  We have a scenario where I check update operations on a table.

  I created a before update TRIGGER, so that every time he goes an update on the main table statement, one before the image of the lines is captured in the table of audit with timestamp.

  Since it is before updating, ideally the audit table timestamp (TRG_INS_TMST) should be less main table timestamp (IBMSNAP_LOGMARKER) VALUE, I mean TRIGGER should happen before the update.

  (I could understand in a way that the UPDATE statement is formulated with SYSTIMESTAMP earlier before the TRIGGER is evaluated and so UPDATE is to have a time stamp prior to TRIGGER, but this isn't what we wanted. We want PRIOR update)

  'Table' IBM_SNAPOPERATION IBM_SNAPLOGMARKER            
  ---- ----------------- -------------------------------
  T1   U                 13-OCT-15 03.07.01.775236 AM   <<---------- This is the main table, This should have the latest timestamp
  T2   I                 13-OCT-15 03.07.01.775953 AM
  

  Here is my test case.

  DELETE FROM TEST_TRIGGER_1;
  
  DELETE FROM TEST_TRIGGER_2;
  
  SELECT 'T1', ibm_snapoperation, ibm_snaplogmarker FROM TEST_TRIGGER_1
  UNION
  SELECT 'T2', ibm_snapoperation, TRG_INS_TMST FROM TEST_TRIGGER_2;
  
  INSERT INTO TEST_TRIGGER_1 (ID,ibm_snapoperation, ibm_snaplogmarker)
       VALUES (1, 'I', SYSTIMESTAMP);
  
  COMMIT;
  
  SELECT 'T1', ibm_snapoperation, ibm_snaplogmarker FROM TEST_TRIGGER_1
  UNION
  SELECT 'T2', ibm_snapoperation, TRG_INS_TMST FROM TEST_TRIGGER_2;
  
  UPDATE TEST_TRIGGER_1
     SET IBM_SNAPOPERATION = 'U', ibm_snaplogmarker = SYSTIMESTAMP;
  
  COMMIT;
  
  SELECT 'T1', ibm_snapoperation, ibm_snaplogmarker FROM TEST_TRIGGER_1
  UNION
  SELECT 'T2', ibm_snapoperation, TRG_INS_TMST FROM TEST_TRIGGER_2;
  

  Def trigger:

  CREATE OR REPLACE TRIGGER etl_dbo.TEST_TRIGGER_1_TRG BEFORE UPDATE OF IBM_SNAPOPERATION
  ON TEST_TRIGGER_1 REFERENCING OLD AS OLD NEW AS NEW
  FOR EACH ROW
  WHEN (
  NEW.IBM_SNAPOPERATION= 'U'
        )
  DECLARE
  V_SQLCODE  VARCHAR2(3000);
  --PRAGMA AUTONOMOUS_TRANSACTION;
  BEGIN
  INSERT INTO etl_dbo.TEST_TRIGGER_2
  (ID,
  IBM_SNAPOPERATION,
  IBM_SNAPLOGMARKER,
  TRG_INS_TMST
  )
  VALUES (:OLD.ID,:OLD.IBM_SNAPOPERATION,:OLD.IBM_SNAPLOGMARKER,SYSTIMESTAMP)
  ;
  --COMMIT;
  END;
  /
  

  Output is something like this

  1 row deleted.
  1 row deleted.
  no rows selected.
  1 row created.
  Commit complete.
  
  'T1' IBM_SNAPOPERATION IBM_SNAPLOGMARKER            
  ---- ----------------- -------------------------------
  T1   I                 13-OCT-15 03.07.00.927546 AM 
  1 row selected.
  1 row updated.
  Commit complete.
  
  'T1' IBM_SNAPOPERATION IBM_SNAPLOGMARKER            
  ---- ----------------- -------------------------------
  T1   U                 13-OCT-15 03.07.01.775236 AM   <<---------- This is the main table, This should have the latest timestamp
  T2   I                 13-OCT-15 03.07.01.775953 AM 
  
  2 rows selected.
  

  But for some reason, even after the creation of the 'AFTER' trigger for update, it works as expected. Sense - the main table is not having the last timestamp given

  It's OKAY - I told you in my reply earlier. Reread my answer.

  could understand somehow that the UPDATE statement is made with earlier

  SYSTIMESTAMP until the TRIGGER is assessed and updated so is to have

  time stamp prior to the trigger, but this isn't what we wanted. We want to

  BEFORE the update)

  As I told you before that your UPDATE statement occurs BEFORE the trigger is activated.

  Despite what the other speakers have said, it makes NO DIFFERENCE if you use a BEFORE UPDATE or an AFTER UPDATE trigger. Your UPDATE statement runs ALWAYS BEFORE the trigger.

  HE has TO - it's your update processing statement that causes the trigger to fire.

  Your update statement includes SYSTIMESTAMP. If during the processing of your return to update the value of SYSTIMESTAMP "at this exact time" is captured.

  Then your trigger is activated and starts to run. ANY reference to SYSTIMESTAMP that you use in your trigger cannot be earlier than the value of until the trigger was executed. It's IMPOSSIBLE.

  The trigger can use the SAME value by referencing: NEW and the column name you store the value. Or the trigger can get its own value that your code is doing.

  But the SYSTIMESTAMP value in the trigger will NEVER earlier than the value in your query.

  And none of these values can actually be used to tell when the changes are really ENGAGED since the trigger does not work and CAN NOT, to know when, or if, a validation occurs.

  Reread my first answer - he explains all this.

• When TDMS throw the timestamps?

  Using LabVIEW for the PDM write VI there are the following caveats:

  When you write a new channel analog or digital signals, LabVIEW includes timestamp information in the waveforms. However, when you add analog or digital signals to an existing channel, LabVIEW can ignore the timestamp information in the new waveforms.

  "Could unravel" is unacceptable, but I was not able to find more information about this behavior.  In my tests, it seems that LabVIEW always decides to ignore the time stamp of waveform.  I want to force TDMS to keep still.

  If your hours are variable, then it looks like you want the XY data.  So for this I recommend logging two tables 1 d, one for the data of Y and one for periods which can be the timestamps.

• Table 2D in TimeStamp

  Hello

  I have a table with n rows and 4 columns 2D.

  9 12 100 80

  9 12 100 112

  9 12 100 207

  ...

  ...

  How can I convert this table to timestamp?

  09:13:40, 080

  09:13:40, 112

  09:13:40, 207

  ...

  ...

  ...

  It is important. the row size is variable.

  Thank you

  Hi Che,

  We have already discussed this subject in very long filaments. Do you still have questions on this subject?

• Add the table to report without timestamp

  Hello

  I try to use the Report Generation Toolkit for Office into my excel report.

  I have an excel template which I access via the generation of report vi in order to pass a double 2d array.

  The array is passed in the report, however, the vi seems to add a timestamp column.

  Is there a way to prevent the vi to add the timestamp.

  Thanks for any help you can give me.

  If anyone has the same problem, I just found that if you convert the 2d 2D array of strings table then the vi is more adds a timestamp.

• How to build a table of TDMS file open

  Hello

  Examples NI TDMS - Express write data .vi (time domain), I can build a PDM file with 2 channels (sine and square waveforms) data, which are stored as test.tdms.

  Using Express read .vi data (time domain), 2 channels of waveform data are read. How to build a table later? How to separate the 2 channels of data in the tables 1-2 and manipulate the data using table functions?

  For example,.

  I want to collect 100 from index100 between channel 0 and their average. I want to take 50 samples from the channel 50 1 index and double each element.

  Thank you for your help.

  Bing@NCL

  Hey Bing.

  You can perform operations on different channels in the 2D table using the table to index. This will allow you to choose the channel to operate on, then you can perform the operation inside a loop on each element. In the included code snippet, I used a shift register to find the total cumulative values in channel 0 and then divided by the number of samples.

  I recommend you read some tutorials LabVIEW and bases of knowledge on topics that are related to yours. These could help a lot.

  I hope that my suggestions help,

  Chris

• No timestamp in the log of TDMS files

  Hello

  I tried searching for this issue but has not found a matching thread. I use an NI USB-6218 data acquisition to monitor several analog channels and have trouble with the recording feature. I'm going on an example, I found and everything works well except the timestamp. When I opened the PDM file, I see the channels that I selected and their tensions but no corresponding time. The timestamp appears in tables, charts and digital indicators in VI itself, but not the worksheet with the tensions in the task. The time is also left empty in the main Excel worksheet (task is the second sheet of the file).

  Anyone would offer a suggestion on why this is happening?

  Hope to hear from you,

  Yusif Nurizade

  No, the timestamps are not saved.  In the metadata for the group must be a start time (T0) and a sampling frequency (dt).  Of those, we can calculate the time of each sample.

• Adding timestamp with all the elements of a table 1 d

  Hello

  I want to add a stamp in real time with all the elements of a 1 d array before writing on a worksheet.

  kindly guide me how to do this.

  Best regards

  RASHID

  Hi rachid,.

  Whence this table? Is a device for the acquisition of data AND measurement data?

  If yes you can just change the type of waveform data, where a timestamp is included.

  However, you can also create a waveform on your table 1 d using construction wavefrom, as here:

  

  Christian

• Cannot read the timestamp of the file LVM in table or export to Excel

  Good afternoon!

  Im having issues return timestamps from a LVM file and an excel file.

  Ulitmately, I have a series of files LVM with 6 channels of data and timestamps of correspodning.

  When I read the back files in a table, the channel values are analyzed, but the timestamp is no where. The channel data then exported successfully to an excel sheet (less the time stamps).

  How can I extract the timestamps with the channel data and bring them into an excel sheet?

  NOTE: I do not know you can open the file LVM directly in excel, however, information is not "analysable.

  I appreciate the toughts. I have attached my experimental code as well as the data set, I am trying to extract. I have also included a spreadsheet excel destination.

  Hi, ASAT,.

  Is there a reason that you do not simply write it as File.vi to write your signal data in the excel worksheet? It is an easy way to put in your signal data to an excel spreadsheet (see file attachment). You can also view the code in this Express VI to see how this is achieved.