Reading & displaying text data

[Aston Hugh]

Hi:

I am new to Labview and have been trying to develop a VI which reads data
from a text file and displays it to a waveform graph.

Here's a brief description of what I am trying to achieve: I am collecting
data continously for 72 hours from a medical monitor which outputs analog
signals from 4 channels then writing the data to a text file.

I have managed to develop a VI which acquire and writes the data to disk
as a text file using tabs as delimiters. My VI writes the data for each
channels in rows.

My problem is trying to read back the data to a waveform graph. I developed
another VI which successfully reads the data but it reads only the first
1,972 values, plots it to my waveform graph then stops. I would lik
e to
be able to repeatedly read through the data then stop at specific areas where
I am able to use the cursor function to measure the waves for Min, Max, Means
and Time duration.

I would greatly appreciate help from anyone. It would help me better if you
could use sample VI's with your explnations.

Thanks very much,
Regards,
Aston.

[Labview user name]

Where are you?

I would be willing to fix your bug if you are in the US. $50.00 per hr +
travel time and TDY.

Aston Hugh wrote in message <38518edd@newsgroups.ni.com>...

Hi:

I am new to Labview and have been trying to develop a VI which reads data
from a text file and displays it to a waveform graph.

Here's a brief description of what I am trying to achieve: I am collecting
data continously for 72 hours from a medical monitor which outputs analog
signals from 4 channels then writing the data to a text file.

I have managed to develop a VI which acquire and writes the data to disk
as a text file using tabs as delimiters. My VI writes the data for each
channels in rows.

My problem is trying to read back the data to a waveform graph. I developed
another V
I which successfully reads the data but it reads only the first
1,972 values, plots it to my waveform graph then stops. I would like to
be able to repeatedly read through the data then stop at specific areas
where
I am able to use the cursor function to measure the waves for Min, Max,
Means
and Time duration.

I would greatly appreciate help from anyone. It would help me better if you
could use sample VI's with your explnations.

Thanks very much,
Regards,
Aston.