Time stamp to excel sheet
I want to print time stamp every second to an excel sheet, tried 1000 of times to add row to the sheet but failed, any clue how to?
Attachments:
time stamp in a row.vi 67 KB
That's because you're wiring the N value of the for-loop to the "column" element of the cell cluster, and you are wiring a constant of 1 to the "row" element of the cluster. You also have several issues with the code:
Do NOT hard-code a path the way you are doing. What will happen if someone else tries to run this code? What will happen if it runs on another computer that has Windows XP? Use a control and set it to a default value if you want.
No error handling whatsoever.
Do not use integer constants in lieu of enumerations. The VIs you are calling have parameters for which enumerations are provided. Use them. Right-click on the inputs and select Create->Constant. This will create the enumerations for you. They are self-documenting.
Do not have a time delay that cannot be bypassed if there is an error. You are running the loop 500 times. What will happen if there's an error on iteration 20? The loop still has to run 480 times, forcing you to wait 480 seconds before you can stop.
Be aware that timestamps between LabVIEW and Excel are different, since they use different epochs. This has been discussed ad nauseam in these forums, so do a search and you will find out how to deal with this.
See attached modification as a starting point. You should also review the LabVIEW training materials. To learn more about LabVIEW it is recommended that you go through the introduction material, tutorial(s), and other material in the NI Developer Zone's Learning Center which provides links to other materials and other tutorials. There are also several Technical Resources. You can also take the online courses for free.
Attachments:
time stamp in a row MOD.vi 79 KB
Similar Messages
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Time stamp to excel .....some thing is wrong in my program
Hi
i am trying to write date and time to excel sheet i got this example from https://decibel.ni.com/content/docs/DOC-2108. but when i tried to write it on excel it is just showing the numbers but not exact date and time what i want.
some body have idea whats wrong in my VI(see attached file)?
thanks
Attachments:
LVtime2Exceltime.vi 8 KBYou might want to swap up to this Version. There are a few things that LVtime2Exceltime.vi does not handle correctly (like Zone, DST and the Leapyear Bug in excel) you may want to vote for this Idea
Jeff
Attachments:
Time to XL.vi 15 KB -
I'm try to log data at a fast rate and I'm using the 1904 time stamp. I've noticed that the system clock only updates every 15 msec. I'm logging data every 5 msec. So when I plot the data I have three readings per time slice.
I don't know what the true update time is it exactly it looks to be around 15msec to 16 msec. If I sync to nist I will get an accurate time stamp but I'm still stuck with the slow 15msec update rate of the system clock. The time stamp accuracy isn't that important but the elapsed time from start of the test is. You can see some times you get 3 readings at the same time stamp and some time 4. To get elapsed time what I did is put time stamp value into excel then subtract that value from all values taken after that point (= D4-$D4$). Since the number of reading at each time stamp varies I can use my simple excel formula. Thank you both for you replies.
elapsed time voltage 1 voltage 2
0 5.432934 7.762001
0 5.437446 7.765869
0 5.443248 7.764257
0.014989853 5.44486 7.762646
0.014989853 5.438413 7.762646
0.014989853 5.448083 7.762968
0.014989853 5.442603 7.766836
0.014989853 5.441314 7.76329
0.030990124 5.436802 7.761034
0.030990124 5.450017 7.760389
0.030990124 5.43938 7.763935
0.030990124 5.443893 7.765547
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0.046999931 5.44905 7.767158 -
Excel time stamp format mismatch
Hello all,
I am writing time stamp into an excel file. Time stamp for time 2013 & 2012 appears different although format & method of writing is same in both the cases.
In the attached file below. When time stamp is 2012 then format of time stamp in excel file & in input is same but when time stamp is 2013 then format of time stamp what i am writing actually & what appears in excel file is different.
Dont know where exactly it is going wrong ?
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet
Attachments:
Time stamp format difference.jpg 102 KBRanjeet_Singh wrote:
Cell formatting is same in both the files, I tried entering directly & results are same.
Thats what my question is ?
Just to be absolutely certain I understand you: when you type a date in 2013 into an Excel sheet, it displays differently than when you type a date in 2012 into the same cell in the same Excel sheet. Is that correct? If you did this with two different files, try it with a single file.
If you see this behavior when you enter the text directly from the keyboard, why are you posting it in a LabVIEW forum? It doesn't seem to have anything to do with LabVIEW.
Why can't you upload your Excel files that demonstrate this behavior? -
How to save data in New Excel Sheet on each time run the VI?
Hello everyone
I am doing my dissertation. In that i have to store the data of load cell in the excel sheet. I have done that.
Here i have attach the vi , template in which want to save data named My , and output when complete the rn of vi named My Report.
Now the problem is once i have run the vi , my report is generated but second time when i run the vi the new my report sheet is not generated. and the second problem is i am getting out put as 511, 0, 2.49.
I want the when ever i run the vi every time the new excel sheet should be generated and saved with date, time and my report tag. ex. My Report 20/11/13 12:00
And i want the output 511,2.49,...dont want this 0.
please hepl me out its urgent
Attachments:
COM TO EXCEL WITH EXCEL TOOLKIT.vi 44 KB
MY.xlsx 12 KB
My_Report 1.xlsx 12 KBYou just need to change the settings. Whenever it will write to excel it will display the save as option.
Then user will confirm the same
In the excel dispose report.vi passsave change and close report boolean input as TRUE and see
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet -
Generating Date Time Stamped Excel Sheet
Hi
I am working on Data Logging project and requirement is to log data data to excel sheet at one per second. Moreover the name of excel sheet should be automatic date time stamp generated. Can anybody help me in generating datetime stamp file name for this file which I have downloaded from ni website.
Thanks
Solved!
Go to Solution.
Attachments:
continuouswritespead.vi 26 KBYour program does not create an Excel File. It creates a text file that Excel is able to open up and import.
As it is right now, the name of the file you create is determined by a dialog box that pops up with the old version of the Open/Create/Replace file that you have. If you want the program to determine the file name, you need to build a file path out of string data in the same manner you are using the string coming from the Get Date/Time String function you have inside the loop.
Message Edited by Ravens Fan on 04-25-2010 02:59 PM -
HOW CAN I GET THE TIME IN EXCEL SHEET USING WRITE TO MEASUREMENT INSTRUCTION
HI, I am using GET TIME IN SECONDS ,and after that i placed SECONDS TO DATE /TIME instruction ,and i had taken a write to measurement file instruction
to get the time in excel sheet. Now i am not able to connect write to measurement source to seconds to date and time output . Is there any solution.
I am attaching my VI file also.
Attachments:
TEST.vi 43 KBHi
Im using Labview 8.2. Currently it just shows the data without the time. Im not sure what to do. It works perfectly though. I just want the time to appear on my notepad along with my data
holla
Attachments:
Testing1.txt 1 KB
Untitled 231_LV80.vi 23 KB -
Append time stamp as a column in an excel file
Hi
i want to add timestamp to the last column of my excel file
my data is this
columnA columnB column C columnD
temp10 temp11 temp12 timestamp these are header name
74.212 73.122 73.222 11AM:23:59.012
73.444 73.223 74.322 11AM:24:02.083
73.445 73.478 75.555 11AM.24:03.833
and continue
I can use write spreadsheet to have the three numeric tempdata but the last column formatted as time stamp and string
how do I add time stamp to my data and call the spreadsheet write VI to append to the excel file ?
help
Solved!
Go to Solution.You have at least two possibilities: One is to do the formatting yourself with string functions and write the data as a text file or an array of strings.
Another is to convert the timestamp to a Double and save it as numeric data. This is only useful if your are going to read the data back into LV and analyze it there, because Excel's numeric representation of date and time is different from that used by LV.
Lynn -
Exporting data to excel with time stamp
We have written an express VI code recording voltage. The code works, and the data is recorded, but the data is transferred to an excel file without the time stamp. In the excel file we have the data down column A, but there is no time at which any of the data was recorded. Is there a way we can get the time recorded in excel also? Thanks for the help.
I maybe wrong but I believe that the timestamp data associated with the data that is logged will be in the TDMS file as properties of those channels. Are you sure the time data isn't logged as a property?
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously. -
Time Stamp problem while writing data into the excel file
Hii, All
I am taking the data from the DAQ card of the TOPSCCC with the 8 ms of scanrate for each channel and there are total 16 no of Analog channels in the Card, now i am acquiring the data from the card, time stamping it and writing it into the excel file, which is tab delimited, now the problem is, the data which are in the excel file have the same timestamp for 4 to 5 continuous records, instead we want each data with the different and continuous time stamp with same difference of time stamp between two records, mean if it is difference of 8 ms then it should be the 8 ms for all, but here it is taking the differnce of 16 ms for two samples and giving same time stamp for four to five records and that shouldn't happen, here i am attaching my vi, drivers for the cards and Excel file with the data, can you please give me any suggestion how to do it?
Please help me i require this suggestion as early as possible, i am requiring it urgently.
Thanks in Advance,
Nishant
Attachments:
2026vi.llb 319 KB
2026_ScanMultAD_Demo_time.vi 80 KB
Data.xls 357 KBHello Nishant,
that's what I meant:
Message Edited by GerdW on 05-16-2006 10:32 AM
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome
Attachments:
timestamp-array.png 2 KB -
Write the time stamp to a excel file
Dear all superusers,
The title imply my question that is how to store every time stamp obtained to an excel file. But when open the file, it contains nothing. Could someone help on this matter.
Regards,
Lee Joon Teow
Electronic Test EngineerHi LJ,
here's an example for writing timestamp to Excel-compatible csv file...
The details of the calculation are given here!
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome
Attachments:
TimestampToCSV_LV80.vi 11 KB -
Format Time Stamp String for excel error
Hi all,
I am currently trying to format the time stamp from labview to excel, in an excel recognizable format. Ive attached a photo of that part of the vi. The time stamp is formated correctly when it leaves the format time stamp block and after it leaves the build array block, but when it is written to excel file it is formated in what looks like a standard format and excel does not recognize this as a time stamp.
Any ideas to fix the issue?
Thanks
Attachments:
Time stamp.PNG 7 KBThe Example Finder has a few ActiveX examples I think one uses Excel.
Also if you have the Report Generation Toolkit I think this is what you need
http://digital.ni.com/public.nsf/allkb/38D7104644E0F7A5862578B1001A86C5
It sets the cell format to be how you want. The default for a timestamp is "m/d/yyyy h:mm".
BUT I just think I have an easier solution. The problem is it correctly detects that this is a time stamp, but the cell format is incorrect. If we convince it that it is a string it will look right and I assume that's all that matters. So add a space to the front of your time, so have the format be " %Y-%m-%d %H:%M:%S" (notice the space) and I think it will look the way you want because Excel thinks it is a string.
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously. -
Help with saving time stamps to "write to measurement file" excel format.
I am having problems saving the timestamps from my data to the write to measurement express vi for excel. My incoming data is converted from dynamic data to a 1d array for processing, which I understand you lose the time stamp data. I added a new array for time stamps but this array then cannot be converted back to the dynamic data that is requested to go into the write to measurement file express vi. I would prefer to leave the data in an array to be saved rather than converting it to a waveform so is there any way to add the time stamps from my 1d array back into the write to measurement file?
I set it up to build a waveform now but I am still having issues with it saving the correct timestamp. The time just incriments for every second (as it did before converting the dynamic data to the waveform). I attached a screenshot.
Attachments:
waveform.png 36 KB -
Need help with Time Stamps and saving Strings in Excel
Hi, Am learing LabView now....and my task is
Everytime start button is pressed, a Random number must be generated.
The Random number is to be staroed in an Excel sheet such that the Random Number is in the first column and Time at which it was generated in the second column...
I used to work with Agilent Vee before and am finding it hard to adjust to LabView
Thanks
SanjayAm making the same mistake again......
Here yougo in LV 8.5 version....
The best solution is the one you find it by yourself
Attachments:
Time Number.vi 12 KB -
FROM AI START VI TO FORMAT AND APPEND VI TO CONCATENATE STRINGS,SECOND INPUT IS TAB,THEN EVEY OTHER ONE IS TAB. THIRD AND FIFTH INPUT IS ATTACHED TO GET DATE/ TIME VI, THEN END OF LINE, THEN CHANNEL 0; TAB; CHANNEL 1;TAB, AND SO ON THROUGH CHANNEL 7. THEN THE LAST INPUT IS END OF LINE. ON THE SPREADSHEET I RECIEVE THE SCAN RATE, THEN THE DATE ,THEN THE TIME; ALL ON THE FIRST ROW. THE NEXT ROW HAS THE COLUMN LABLES, AND DATA GOES TO THE CORRECT COLUMN. BUT NO TIME STAMP COLUMN. I WOULD LIKE IT TO BE IN COLUMN "A" EVEN WITH THE FIRST ROW OF DATA. EX." 10:01:01 200 300 400
10:01:03 200 300 400
THANK YOU
FOR YOUR HELP, JOE BOB CRAINI think the best way is to generate an array of time values to send to your spreadsheet BEFORE channel 0 data.
To generate the array you can use Ramp Pattern.vi from 0 to 'Actual Scan Rate' (from AI Start) * number of scans performed.
That way in your spreadsheet you will have the first line same as now, next the columns with time(secs), channel 0, channel 1... channel 7.
If you need the time column with date and time string, you can use Get Date/Time in Seconds.vi when you begin acquisition, then sum the seconds obtained to the array calculated as above and next use Format Date/Time String.vi to obtain the time stamp you need, next build array of time stamps and sent to your spreadsheet.
Hope this helps
Roberto
Proud to use LW/CVI from 3.1 on.
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If I have helped you, why not giving me a kudos?
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