DAQ session error within a guide interface
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I am currently building a gui that contains controls for both image acquisition and national instruments data acquisition (sometimes simultaneously). I successfully built the controls for the image acquisition part. I can preview, capture, and process images from my video stream, and view them in real time. I went on to add the daq code and ran into the following error:
No appropriate method, property, or field preview for class daq.ni.Session
This occurs when I try to access any part of the handles structure after issuing a daq command. I check handles and all the fields appear to be present. I created the daq session as handles.s = daq.createSession('ni'). I am sure I am using the handles structure incorrectly but I cannot figure it out.
回答（1 个）
Sean de Wolski
2014-3-20
编辑：Sean de Wolski
2014-3-20
0 个投票
preview is an option to preview an image, it'll be different for daq. I don't have access to any hardware right now but you'll be able to find your method of choice in here, perhaps startbackground?
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