Import image to waveform graph

Hello
I would like to import an waveform saved in some image format (PNG or JPEG) and display it in the waveform graph. I checked with the property node "plot images" but I am unable to specify the path of the image using this property node as in my case the image is varied with different experiments for comparing two waveforms(one waveform is in image format and the other is obtained from an oscilloscope instrument). Could someone please suggest how could I do this.
Best Regards
Pratheek
Solved!
Go to Solution.

Hi Hooovahh
Thanks for the solution. One more problem. In the waveform graph, it is displaying the labels, X-axis and Y-axis values. I woud like to have only the waveform without any labels is it possible to remove these lables from displaying in the waveform graph. could you please help. Thankyou in advance
Best Regards
pratheek
Attachments:
Capture.PNG ‏34 KB

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[Graph after Copy and Paste on Paint|http://postimage.org/image/m9szt96vr/]
http://s15.postimage.org/ybodneg4b/graph_After.png
Now take a look how It looks like when exporting to Image png:
[Graph Imported as PNG|http://postimage.org/image/4g3dgfic9/]
http://s12.postimage.org/r4skfzzq5/Export_Img.png
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http://digital.ni.com/public.nsf/allkb/5AE4ADCBB65A6D8F86256FBF007A1AC1?OpenDocument
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Regards.
Wesley Rocha
Applications Engineer
National Instruments Brazil
www.ni.com/suporte
Wesley Rocha
Application Engineer
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Visite a nossa comunidade em PORTUGUÊS!!!

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Hello
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ObservationsWith reference to attached VI)
(1) Sometimes I found it captures images correctly when i run labview program first time but after that it starts writing blank images.
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Attachments:
image_capture_problem.lvproj ‏6 KB
image capture problem.JPG ‏149 KB
0.0_10__3.jpg ‏2 KB

Hi,
I have tried sequence structure.But sometimes it also gives blank images. I have attached new vi which is using flat sequence. Run this vi 7-8 times then you will observe blank images. I don't know why?Any help will be greatly appreciated.
Attachments:
image_capture_problem.vi ‏69 KB

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Hello
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sparti.
Attachments:
ScaleProblem.vi ‏165 KB

hi there
Ben, thanks for the link. Christian's suggestion is right and describes a similar problem.
I solved the problem now on an other way. Each time before I change the visability of the scales I reset all settings to the default (startup) values by property nodes (YScale.Maximum, YScale.Minimum, All Visible...). Then I make the scales which I don't need unvisible, link the graphs to the prefered scales and set the Min/Max or autoscale.
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LabVIEW 2014 SP1
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It seems, i cannot explain the question in good way
It is not about my data or zooming. It is about strange bahaviour of the Graph. The following sequence of steps illustrates the problem and shows that the zooming is not the issue (or, at least, not the main issue):
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Attachments:
ASK.vi ‏53 KB
simple_ask_transceiver (SW).vi ‏172 KB
Image.PNG ‏21 KB

Hi Serina,
have you tried to use the waveform graph/chart from the "Classic" palette?
Those controls/indicators have a "flat" look making a lot easier to hide unneeded features
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

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Attachments:
11.vi ‏97 KB

One of your problems is the fact that you reset the panel color only after the event has completed and since it generates the full report, this can take some time.
The problem will be much less noticeable if you reset the changed properties right after grabbing the image.
Attached is a quick draft. Modify as needed.
(Sorry, I don't have 7.1, so I downconverted from 8.0. There could be some conversion errors that should be easy to fix.)
You should also make sure to place the terminals of the latch action booleans INSIDE their corresponding event case, else it might not reset to false during execution of the event.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
11MOD.vi ‏58 KB

Waveform graph with timestamp

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Thanks
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1:30 Seconds ARRRGHHH!!!! I want my popcorn NOW! Isn't there anything faster than a microwave!

I don't notice a difference between an XY Graph and a Waveform Graph if the dt on both are the same and assuming all of the other attributes (interpolation, point style, range, etc.) are the same as shown below. To create a waveform graph and assuming that the dt is constant in your time array, you can do something like the other image. An XY graph is normally used only when the intervals on the x axis are not constant. If you see a difference, you should post your VI (with data in the arrays) so that someone can look at it.
Message Edited by Dennis Knutson on 09-15-2007 09:38 AM
Attachments:
Waveform Graph versus XY Graph.PNG ‏21 KB
Build Waveform.PNG ‏8 KB

A question about Waveform graph

Hello everyone.. I have made a waveform graph to measure pressure with my DAQ NI-9237. The problem is the time value in the x-axis shown on the picture below. It only shows the measurements from 0 to 1, but i need from 0 to 4 seconds.
Thanks in advance
Oesen
Best regards
Oesen

Hi Oesen.
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Using the Waveform Data Type in LabVIEW
http://digital.ni.com/public.nsf/allkb/B965F316364DE17B862572DF00363B10
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Import image to waveform graph

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