Displaying Max/Min values with time for analog signals.

[mikeh]

Thanks for your help. I will give it a try. One further question....I am using a strip chart to desplay these values. I have set the time interval on my while loop to 1 minute. I would like the x axis to pick up the default windows time/date without me having to allways set the start time and the interval manually. Thanks again!
Michael

[mikeporter]

Strip charts are kind of funny because they essentially represent a moving window over a (potentially) much larger trace memory. Unless you change the update mode, the right-hand edge of the strip-chart will by default always be the last value ou added to the chart. The left hand edge will be a fixed number of samples before the right edge. You can right-click on the graph and display a scrollbar that lets you scroll this fixed-size window across all the data that is in the chart memory. You set the size of this memory (in number of samples) by right-clicking on the graph and selecting "Chart History Length..."

Mike...

[Cory_K]

I am also trying to display the maximum values and time of maximums for the project I am doing.

I can't seem to find the max/min function for my program.

Using a thermocouple input device, I am reading in 3 thermocouples (USB), graphing them (on a waveform chart) and writing them to a file.

I can't figure out which max/min function to use:

At any given iteration, the thermocouples are only single values, of double precision format.

Therefore, I cannot use waveform max/min.vi. I also can't do anything with arrays because I don't have an array.

I have a feeling I need to do something like use a shift register to store the value each iteration,

but could someone help me out with the specifics of what I should do?