Waveform chart to excel

I need to put my waveform chart data into an excel graph?
does anyone know how this can be done?
please help,
Harold Timmis
GE Transportation
Harold Timmis
[email protected]
Orlando,Fl
*Kudos always welcome

here..
do this
Message Edited by krispiekream on 11-14-2008 01:58 PM
Best regards,
Krispiekream
Attachments:
excel1.PNG ‏19 KB
excelPlot.zip ‏215 KB

Similar Messages

Labview absolute time waveform chart to excel

Hi everyone, I have a bit confusing on absolute time waveform chart. My problem is when I want to export to excel, the data duplicate nearly 30 times for each second. My project is about collect temperature from serial port and plot it in waveform chart, and I want to view history data in excel.
Anyone can help to solve my question? I attached my vi here..
Thank you so much..
Attachments:
NEW FINAL1.vi ‏96 KB
snap.PNG ‏11 KB

You are getting such a large number of readings because your VI has no timing control in it, if you simply add in a delay somewhere of maybe migrate to an event structure with a timeout then you can control the number of readings that are taken per second.

Export all data from my waveform chart to excel

Hello, my name is Chris. I am just learning to use LabView. Everything I have learned so far is through these boards. Which is a valuable tool for someone learning. The VI I am working on is to monitor current from a unit we are testing. I am able to monitor current and have it running in what I believe to be real time. As I said, this is the first one I have made. I am trying to export all the data from my Waveform Chart to a report. Everytime I try I get one instance and it measures 0. I don't know what I am doing wrong. Any help would be appreciated. Also, if you have any suggestions on the all around working of this I would appreciate that as well. Thank you in advance.
Attachments:
Lp Current Test.vi ‏83 KB

Hey Christophrt,
If you are trying to display the microseconds for a waveform chart in LabVIEW here is how you can do it:
Go to the Chart Properties>Display Format>X-Axis>Advanced editing mode>enter:
%<%I:%M:%S%6u>T as the format string and you will have the hours: minutes: and seconds to the microseconds.
If you are trying to display the exported data in microseconds in Excel, you will probably have to do some formatting changes in Excel to have that work.
Regards,
Tommy G.
Applications Engineer
National Instruments

Write data from waveform chart to excel

Hi,
I am trying to create a button that save de real time values recieved in a waveform chart. I don't know how to save it alls, because I don't know if is needed a buffer to save all or how can I do it.
It wil be faboulous if someone give me ideas!
Thanks so much for your support!
Solved!
Go to Solution.

Hi mlop,
You can go through the attached VI. You will get some idea of how to do it..
Regards,
Nitzz
(Give Kudos to good Answers and Mark it as a Solutoin if your problem is Solved)
Attachments:
Untitled 2.vi ‏9 KB

3 Waveform Chart to a Single Excel but in Different Spreadsheet

I wanted my waveform chart to export the data to excel which I can easily do by right clicking the chart and export to excel. But I have 3 waveform chart and I want to export it to a single excel file but in different spread sheet. How do I do that with the same result with the conventional "right click method and export"?

For this you probably will need to add some code to your VI to do this instead of right clicking on the chart. You can use the VIs located in the Programming>Report Generation>Excel Specific pane which has tons of stuff for that.
Attached is an example of a basic VI that populates three waveform charts with random data and creates an excel spreadsheet with each chart's data input into a different workbook. This is rough and you can add a lot more functionality if you want depending on your needs. Just take references to all your charts and put them into an array and feed into the for loop.
(Also there are probably better/cleaner ways to do it but this is the best I've got )
Attachments:
WaveformExcelExample.vi ‏29 KB

Waveform chart to looking like this excel format

hello,
i am using the DAQ assistant.
i configured it to have 9 channels of data.
can someone guy me into exporting the data to look like this excel file?
how can i take the data from the waveform chart and input it into the RAWDATA STRING so that it look like the format in the excel sheet?
thanks!
Attachments:
TCs.vi ‏108 KB
082714.001.csv ‏139 KB

No need to delete old posts. It may help someone in the future and if not, it will fall off the main pages and dwell forever in land that time forgot... Or the NSA will grab it.
Using LabVIEW: 7.1.1, 8.5.1 & 2013

Waveform chart. Send data to Excel

I am monitoring the output voltage from a electronic circuit using LabView 7.1 and a DAQ card.
I have been able to view the output voltage using a Waveform Chart but i have been unsuccessful sending the data to a file. Only one data point gets saved each time.
I am using the "Write to Spreadsheet File .vi "
Could someone tell me what i am doing wrong?
Please see the program attached below.
Attachments:
Attempt 3.vi ‏26 KB

You can build a 1D array as your loop runs. Where your data exits the while loop, right click on the border and select 'Enable Index'.
If you want to save data continously, you need to move your 'Write to spreadsheet file' vi inside your while loop. As it is, only the last data point will be saved when you stop your loop.
You will also need to connect a control or constant to the file path input so that you do not get a file dialog every time your loop iterates. Further, connect a True constant to the 'append to file?' input so that you do not overwrite data.
Also, you may want to insert a wait period in your loop to allow other processes to run.Message Edited by DavidT on 04-27-2005 09:16 AM

Combining 2 readings into a waveform chart/graph displaying continuous readings of data from different sources

Hi,
In the file
(Serial Read and Write to .tdms & Compare on Graph – test.vi) I am trying
to integrate the following two waveforms into a single waveform: Realtime
reading and Waveform chart (open vi to see). Both of them display speed vs time
but from different outputs. One comes from an excel file (Teraterm – Results.xlsx
– sheet 4, (column 3:row 4) to (column 3:row 1878)) and the other comes from
the Serial input which is in Hex format and is split to get the various readings
of speed, voltage etc. I have already wired speed to a variety of waveform
outputs, but all result in broken wires.
The readings are taken in by the program
and but I am unable to wire the two readings together into one graph.
Please do let me know as to how can I make this work.
Thanks in Advance.
Best Regards,
Akhil
Kumar Meesala (Mr.)
Year
4 | Undergrad | Mechanical Engineering
National
University of Singapore
Email:
[email protected]
Mobile:
(+65) 9326 7069
Solved!
Go to Solution.
Attachments:
Serial Read and Write to .tdms & Compare on Graph - test.vi ‏58 KB
Teraterm - Results.xlsx ‏593 KB

Dear GerdW,
I'm sorry again about the misspelling your nick.
I tried connecting a waveform chart to the two terminals (speed from the DAQ and speed from the excel file) but I was unable to get the connection right. I understand that charts are used for readings which are equally spaced out, whereas XY graphs are used when the readings are not be spaced out uniformly. But I am unable to wire the connections correctly.
Actually the DAQ device continuously sends out data through the serial port. So I would not run out of data . Are you referring to the data coming from the DAQ device or the excel file? I actually have not thought of what would happen when the excel file would run out of values I am just hoping for the software to run till then for now
I have cleared up the wires as well Thanks for your help.
Best Regards,
Akhil Kumar Meesala (Mr.)
Year 4 | Undergrad | Mechanical Engineering
National University
of Singapore
Email: [email protected]
Mobile: (+65) 9326 7069
Attachments:
Get Excel Values.vi ‏25 KB
read_excel_values.llb ‏201 KB
Serial Read and Write to .tdms & Compare on Graph - test.vi ‏79 KB

Using waveform chart to collect data

Hello,
I am a new user to labview, however I have been using it for a while now.
I have a simple problem.
My model runs a drive cycle for 1400 secs.
I want to record data for a sample rate of 1 sec.
However, When I try to run the model and export it to excel it shows data for a sample rate of 0.1 seconds. How can I change that?
Also, what can be the maximum buffer size of the waveform chart?

Hey govindgoal,
The max buffer size is pretty massive so don't worry about that. I would post your code or at least the part which is recording the data for people to help debug. It would seem however that you have some timing issues with your application.
Regards
Andy
"To 'G' and not to 'C', this is not a question!"

Trouble using a mask on a waveform chart

I have created a waveform chart that plots the
temperature readings from my thermocouple. It is making continuous
readings, and I can take the data from the text file I created and
graph it in excel and everything is fine. However, my temperature
readings have to follow a standard temperature vs. time curve with a
limit of 10% error. Since I need to me able to compare the live data to the standard curve, I created a mask by inputing the data points for
the upper and lower limits and hooked it up, and now my chart will not
work. When I checked the data on the text file it only makes 3
readings and then starts over (i.e. gives a reading at 0 sec, 1 sec,
2sec, then starts over). I have tried using N readings instead of
continuous and nothing seems to work. Can anyone help?
Thanks!

Carla,
Attached is the program I made. I am using Labview 8.2 with a NI cDAQ-9172 chassis, and a NI 9211 input module. By inputing data points, I meant that I took the required data from the temperature vs. time curve I have to follow and placed them in the table that the masking.vi allows and set dx=1.
Basically, what I am expecting to happen is that I will have a chart with streaming data of what the current temperature inside the oven is, along with the upper and lower limits of what the temperature can actually be. This way, I will know whether I need to heat the oven up more or cool it off (the testing will last 4 hours).
I attached an excel file of the actual curve to give you a better idea of what I am talking about.
Thank you for the help.
Attachments:
Tempcurve1.xlsx ‏16 KB
Burner(testing)1.vi ‏393 KB

Waveform chart data to file

dear sir,
iam getting eight different plots on waveform chart with system date and time. Now i want to store this eight values with system date and time in excel file as per specified time interval. it shoould be online because i don't want to stop my vi to save that data in file. Is it possible? If yes please help me.
thanking you
falgandha

Falgandha,
this can be done with ActiveX or just saving the data as spreadsheet file and then importing it to Excel.
If you like to know more about Excel and ActiveX, you should take a look into the ActiveX-examples of LabVIEW.
Saving data as spreadsheet file is available as examples as well, but maybe it is sufficient for you to use the "Write To Spreadsheet File.vi" from the file IO palette.
hope this helps,
Norbert B.
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.

Waveform chart auto clear

Hello,
I am doing data acquisition with labview and showing it on a waveform chart. I wish to generate an excel file with two columns : time and amplitude automatically after the vi finishs. But everytime I start a new acquisition, the x-axis (time-axis) start from the previous time value and when the excel file is generated, the time doesn't start from 0. I know it is possible to perform"clear chart" from the data operation by right clicking the chart on the front panel, but it is troublesome to do so everytime. Is there any other way to clear the time-axis to 0 for every new launch of the vi?
Solved!
Go to Solution.

Thanks for the solution. I did this :
but the excel generated doesn't save all the data from the waveform chart. It only save a short amount of data. Why is this so? Is there anyway to save all of the data?

Waveform chart X-Axis reverses itself when upper limit is edited in Absolute Time - problem may be linked to Timestamp Control?

I've seen this problem for some time now, and it still exists in the Silver toolset Waveform Chart in LV 2012. If the chart is in strip mode, and you edit the upper limit value to a point in the future, the X-Axis will invert (higher values/ later time to the left), to the limit of the Chart History length. This happens whether the chart is active (logging data on a compiled executable) or even when in design mode, though it's more consistent when there's data in the chart. It's not history length related as far as I can tell, as I set the length to 7 days of sampling @ 1-second intervals (605K), and it happens when I try to set the end time to an hour in the future with only a few minutes of data collected - suddenly the right Absolute Time becomes the time my last sample point was collected, while the left Absolute Time becomes nearly 7 days in the future (so neither end point is what I was setting it to).
It's nice that the chart gives the option of editing the limits, but as such, it's important that they work as you would expect them to.
Also - until this is addressed, is there a way to lock it against editing? Until a fix is made, my workaround is to put a transparent button over the range start & end points, and a transparent flat rectangle above all other mid-range points, and pop-up a data entry form with a Timestamp control to allow editing. Unfortunately, this doesn't work as I would expect, as typing "11 AM" in the Timestamp control over a prior value of say "10:05:34.232 AM" ends up becoming "11:05:34.232 AM" instead. ??? Another error - or is this by design? If it's by design, is there an option to make it behave as I would prefer (11 AM = 11:00:00.000 AM), as Excel behaves with timestamps? I can't help but suspect this may be linked to the chart axis issue.
Also - I just built a simplified chart modeled somewhat on my current project, and could not get this to recur. BUT... had the strangest thing happen: My sample data was generated using the Trig functions for Sine and Cosine, and at one point my waveforms distorted on the display, so I'm attaching that here plus the simplified chart project.
Last - my system is LV 2012 on Win7 Pro-x64.
Thanks!
Erik
Attachments:
Chart data distorted.png ‏45 KB
Waveform Chart Flaw.zip ‏17 KB

I am not so sure that this is a bug, and I have not been able to reproduce this behavior that you are describing.
But you can lock it from editing by right-clicking on the graph and go to Properties>>Appearance>>Enabled State --> Disabled
Also, word of advice for the future: You will get more replies from the community with shorter posts and keeping it to one question per post. Summarize what the issue is, and put the detailed documentation and instructions to reproduce in the actual VI.
Huntington W
National Instruments
Applications Engineer
***Don't forget to give Kudos and Accepted as Solution where it is deserved***

Chart to excel file in fpga target

I am a new user of LabVIEW.please help me. I want to export the data to an excel spread sheet from a waveform chart (FPGA Target). suggest me a solution.
Also give me a suggestion for sampling in FPGA target.

Hi,
Which FPGA Target you are using? FlexRIO or CompactRIO?
There is a few ways to transfer data from FPGA to computer, you can refer to the following topic for more detail information:
Transferring Data between the FPGA and the Host (FPGA Module)
http://zone.ni.com/reference/en-XX/help/371599F-01/lvfpgaconcepts/pfi_data_transfer/
Once you choose the method of communications, you need to save your data into an excel spreadsheet.
Do you need to generate a graph automatically in the excel? If yes you might need a report generation toolkit for this.
Else, you can use the "write to spreadsheet.vi" to log your data.
I found a great example in the community, you can refer to the link below:
https://decibel.ni.com/content/docs/DOC-7332
Regards,
KwokHow
Applications Engineer | National Instruments
Singapore (65) 6226 5886 | Malaysia (60) 3 7948 2000 | Thailand (66) 2 298 4800
Philippines (63) 2 659 1722 | Vietnam (84) 8 3911 3150 | Indonesia (62) 21 2924 1911

How to save X and Y vaue from a Waveform Chart

Hello Everyone!
I'm implementing an adquisition systems that send data to a waveform Chart through VISA. All run properly, but I would like to save the data adquired to an excel file. I saw examples to how to save it, but only save the Y value.
I would like getting the X and Y values in 2 columns different in the excel file.
¿Is it possible?
¿Can someone tell me how I can do it?
Thanks for your feedbacks!
Solved!
Go to Solution.

I meant uploading the actual VI, not a picture of it. You need to fix your code.
You should not be initializing the serial port in each iteration of the loop. Initialize outside, read in the loop, and close when the loop is done.
Why do you have 2 VISA resource controls? Are you talking to 2 different devices?
The event structure serves no purpose in your code. If you are trying to enable/disable the file writing, use a case structure that's controlled by a simple front panel switch.
You should "remember" the path that the Write to Spreadsheet File uses. Otherwise you will be asked for the filename each and every time you try to save. You can do this using a simple Feedback Node:
Since you are reading the value periodically, just use one of the Get Date/Time functions. You can use the Get Date/Time String to get a formatted string. Then you can format your value as a string, and build your array using those 2 values. Or, you can use the Get Date/Time in Seconds to get a numerical value. Be aware that LabVIEW's starting time is 12:00 a.m., Friday, January 1, 1904, Universal Time [01-01-1904 00:00:00], which is different from Excel.
Attachments:
Example_VI_BD.png ‏1 KB

Waveform chart to excel

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