Best way of displaying a waform through a webservice

Hi
I know my way around text based programming languages fairly well, but am very new to Labview.
The problem I am facing is something that I can't seem to find any good information about on the internet.
I have a DAQmx board of which I would like to show waveforms of the analog inputs on a website. The webservice documentation says webservices acutally support waveforms, but if I wire it to a terminal I can't start the webservice.
What I did now is split the x and y values, add them to an array and show them on a webpage using google Charts. This works, but only gives me the image of 1 reading of course. I know you can make a streaming web VI as well, which I could refresh every n seconds, but that still wouldn't give me a continuous stream to the webpage, it would just refresh the image...
Am I totally missing something, or is there just no easy way to do this in labview? (I am using labview 2013 btw )
Thank you,
Vincent
Solved!
Go to Solution.

You might want to take a look at the new NI Community here: https://decibel.ni.com/content/groups/web-services
They've posted up some examples of how you can use AJAX/javascript to retrieve data from a web service. You are probably right in breaking apart the waveform - javascript/google charts probably won't know how to handle the LabVIEW waveform data type so better to just send an array of numbers to plot on the chart.
How you update the chart will be up to you, your web service could either send the full XY plot each time you request it or you could just periodically poll for new values and add them to a local buffer on the client/browser side.
If you need faster update rates, you might want to check out my WebSockets library (linked in my signature).
Certified LabVIEW Architect, Certified TestStand Developer
NI Days (and A&DF): 2010, 2011, 2013, 2014
NI Week: 2012, 2014
Knowledgeable in all things Giant Tetris and WebSockets

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