Saving an Agilent N1996A waveform trace to graphics/Excel files

Hello,
I am new to LabView. I need to create a VI that will save an Agilent N1996A (CSA) waveform trace to a graphics file (PNG, BMP). The user will enter a filename through the front panel. The Functions palette has a CSA ReadTrace.VI that sends the data to a waveform trace but I do not know what other objects or wires to use to save the data to a file specified in the front panel.
Additionally we need to export the X and Y arrays from the trace to an Excel file, which will also be given by the user through the front panel.
Thanks!
Nina

You can use the Get Image method with the appropriate write function on the Graphics & Sound>Graphics Format palette.
The Write to Spreadsheet File is just one of the File I/O functions you can use.

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How can I make waveform graph and/or excel file with two different dynamic DBL values?

As the question describes, I have two dbl sources from a load cell and linear actuator (from firgelli). I want to make a load/displacement curve from the force readings from the load cell and the displacement readings from the linear actuator. The load cell outputs an analog signal that can be acquired by a DAQ and the actuator comes in with a board and VI program to control the speed and measure the displacement of the actuator to a sample rate of my choosing. Is there a way that I can make a VI where it continues to collect data and construct the graph I'm looking for?
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Go to Solution.

A couple points about your application:
1. Synchronization. Since you're ultimate goal is a stress/strain curve, it is vital that your force and displacement data be synchronized appropriately. If your sampling is beyond a few times a second, this is not really possible without some form of hardware synchronization via either a trigger and/or sample clock. Two NI DAQ boards can be synchronized this way easily, but it seems you're using 3rd party hardware for one of these processes. Would need to know more about that board to know what options you have. You could specify what your resolution is in distance, and how fast the article will be moving, to get an idea of how fast to acquire, and how well you'll need to synchronize the data. Another option, since it appears each data stream will be sampled on a hardware-timed sample clock, they will be offset in time, but not skewed during the acquisition. You may be able to identify a feature in the data set common to each and use that to remove the timing offset after the process is completed.
2. Display. To display data during the acquisition process, I usually recommend at least one display that plots vs. time. Much easier to spot irregularities with the acquisition process that way. However, if you'd like to also plot force vs. displacement, you can use an XY Graph to plot parametrically. For Example, in your case you would use the Displacement data as the X coordinates, and the Force data as the Y coordinates.
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4. Batch vs. Real-Time Recording (Data File). If your process is short (< 30 sec) you may be better off acquiring the data, Storing it locally to the VI (Array - usually maintained in a shift register), and then writing the file with a header (acquisition parameters, test article information, data column headers) and the data all at once in batch mode to the file after the process is finished. If, however, it is longer than that you would be better off starting a data file with a header and appending the data to the file as you go, so that if something happens during your test, you at least have data up to that point.
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Writing Trace Info to and Opening an Excel File on command

I am currently using a Read Traces (numeric) vi to collect values from Tags and output them to a XY Graph. Alongside the graph on my front panel, I would like a boolean control to command (when true) LV to write the data to a spreadsheet and open that spreadsheet so it appears on screen, ready for the user to view and then save the excel file where he/she would like.
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Hi Stuart,
I have written an example piece of code for you which has the basic functionaliy that you want.
The example plots random data to a chart. When the boolean is pressed this data is written to a spread sheet file and Excel is opened to display this data.
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There is also an example available in the "LabVIEW Example finder" called "Write Table to XL.vi". This example takes the data from a table and cell by cell inserts it into an excel speadsheet. Which the operator can then save from within excel. However, this method is not the most efficient way to get data into Excel.
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Emma R
NIUK & Ireland
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SR_300720_Example.vi ‏68 KB

Continuous saving data and showing waveform

I want to continuous saving data and continuous watch the waveform on the graph..
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You need to show what you currently have so we can figure out your system and figure out exactly what you are looking for.
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I am trying to acquire several cycles of a waveform and save it to an excell file.

Only one or two (I don't remember which) of the values shows up on the excell spreadsheet, the spreadsheet remains otherwise empty. I know that the waveform is being captured by the DAQ because it is graphed, and it looks fine. If someone could point to where I have gone wrong and offer some suggestions, I would greatly appreciate it. Also, if there are some obvious indications that I am missing some necessary understanding of what is going on within my vi, feel free to enlighten me.
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The reason is that you are trying to wire a 1D arrray of WDT (waveform data type) to the file box. WDT is a special data structure where are stored not only the signal readings but also t0 (the time stamp = date of the first data point) and delta t (the time increment between to points). You need to reorganize the data before saving to a file. Use the "get waveform components" (in the waveform subpalette) to separate the time stamp from the data.
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Save multiple waveform graphs and data in one Excel File

Hi there,
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First, you are not creating Excel files. You are creating text files. And it seems that your Write to file is already creating X (time) vs. Y (data curve) that is tab delimited.
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Sinusoidal_Curve_(saving_to_Text_file).vi ‏69 KB

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I am unable to open a project that I have worked on and saved. I get an error message that the file is damaged and cannot be opened.

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How to make my waveform from excel file perodic in labview graph

Hi guys,
Previously I've made a vi which integrates the excel file, to plot the graph values in labview using the values in the excel file to give the me a better flexibility to decide what waveform i want it to be. Can i know how to actually make the graph periodic, as in the waveform repeats, because currently it can just plot out the waveform accordingly to the values i inserted in the excel. I've attached my vi and aso my csv file together. Thanks guy.
Attachments:
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So do you want to read the same values over again?
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graph.vi ‏18 KB

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Hi,
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Hi Alan,
>> Is there a way to default the Save type to XLSM for this template only? Like some code that I could put in that when the users saves, it saves as a macro enabled XLSM type only for this template file?
In my option, you could achieve this by adding Application.GetSaveAsFilename Method to the workbook BeforeSave event. Some key code like below:
Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)
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But there is a limitation of this workaround, in this workaround, the save as will only support the macro enabled type, other save as types like "xlsx" will be ignored.
For more information about Application.GetSaveAsFilename Method (Excel), you could turn to the link below:
#Application.GetSaveAsFilename Method (Excel)
https://msdn.microsoft.com/en-us/library/office/ff195734.aspx
Best Regards,
Edward
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Saving an Agilent N1996A waveform trace to graphics/Excel files

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