how to make a LVM file for a wave form

[Dennis_Knutson]

I'm sorry, but I don't understand the point of getting the same file continuously. All that would accomplish is displaying the same waveform over and over again with no change in the display expect for some sort of flicker I would imagine. If you were acquiring data real time, then you would do a continuous data acquisition but your data is fixed and doesn't change. A graph doesn't scroll. If you want to do some other processing on the data after you read the file, then put a while loop after it's been read.

To post images, you just copy what you want and paste it into paint. I save the images as .png files. You can then attach that image. Submit the post and and then yu have a brief period in which you can edit the post by clicking the 'Options' button at the top of the message body. You can then click on the attachment and select Open In New Window (IE6). Copy the url of the new window. Click on the Insert an Image button that is above the message body text. Paste in the url of the image.

[merrythomas]

Basically my need is to get a continuous simulated ECG signal, from the text file.

I used "Read from spread sheet file.VI", build grapg and graph output - As u adviced.

Now it is exhibiting only one time, after that it is asking the file again.

The input pins available in the "read from spread sheet file. VI" are

Format - %.37

File path - Dialog if empty (I don't know what to put here, may be this is the problem)

Number of rows - all

etc

As per your earlier suggestion,there is no place for the constant to be added.

[Dennis_Knutson]

Maybe there is some sort of language barrier. If you are not a native English speaker, you can post your question in your native tongue. The LabVIEW community is world-wide and I'm sure there would be someone here that could understand you and make my previous point absolutely clear. There's obviously a LabVIEW language problem since you have the eval version of LabVIEW and wouldn't want to waste the eval period actually taking the tutorial I mentioned.

Listen carefully. Whether you read the file once or a million times, the data on the graph will not change one iota. Every time you do the file read, it completely replaces the previous data. You end up with a graph that looks identical to the graph you had before you did the second read. In fact, it looks identical to the the png image I posted. You need to better explain what you mean by 'simulated ECG signal'. Do you want the signal to scroll from right to left, append the second waveform to the first, whatever. In none of the situations, though, would you have to read the file more than once.

[merrythomas]

yes, for scrolling what we should do... is it possible....

[Dennis_Knutson]

Of course. Here's a very simple example. It uses a chart instead of a graph and just keeps cycling through the array that is read once from the file.

Message Edited by Dennis Knutson on 12-06-2006 04:06 PM