Create an array of time values?

sanderson · January 13th, 2009, 01:11 PM

I want to be able to click a button and start a timer that is just counting up. I then want to be able to create an array of numbers that are from the time values.

So for examle if I pressed start the timer would start counting 1 sec, 2 sec, 3 sec... and then an array would be created like t=(1,2,3...) but in what ever format it needs to be in for vb 2008.

Any ideas? This is probable very simple and I am just stupid.

I plan to make a plot of a value that I will be reading in to vb from a temperature gage. The plot will be time versus temperature. That is why
i want an array of time from the moment I press the button.

I hope this makes sense.

Old Pedant · January 13th, 2009, 07:18 PM

Ummm...not to ask a dumb question, but why do you need the array???

If you have the start time and the end time (of the period where you are collecting the temperatures), isn't that all you need???

Then you just run a loop:

Code:

For sampleTime = startTime To endTime 
    ...plot one temperature value as Y value while using sampleTime as X value ...
Next

Or, if you really wanted the X values to start with zero, then just do:

Code:

For sampleTime = 0 To endTime-startTime+1
    ...plot one temperature value as Y value while using sampleTime as X value ...
Next

This assumes you keep the startTime and endTime values as integers, of course.

Finally...

SURELY you are storing the temperatures into an array while you are recording them, no?

So why not just

Code:

For sampleTime = 0 To UBound(temperaturesArray) 
    x = sampleTime
    y = temperaturesArray(sampleTime)
    ... plot x and y ...
Next

It just seems utterly pointless to keep around an array that is nothing but monotonically increasing integers.

Patrick Cambria · February 7th, 2009, 05:15 AM

Quote:

Originally Posted by sanderson

I want to be able to click a button and start a timer that is just counting up.

Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Timer1.Enabled = True

Quote:

Originally Posted by sanderson

I then want to be able to create an array of numbers that are from the time values.

Code:

Dim arrTimes() as DateTime

Quote:

Originally Posted by sanderson

So for examle if I pressed start the timer would start counting 1 sec, 2 sec, 3 sec... and then an array would be created like t=(1,2,3...) but in what ever format it needs to be in for vb 2008.

Code:

Dim tics as Integer = 0
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
arrTimes(tics) = now()
tics += 1
End Sub

Any ideas? This is probable very simple and I am just stupid.

I plan to make a plot of a value that I will be reading in to vb from a temperature gage. The plot will be time versus temperature. That is why
i want an array of time from the moment I press the button.

I hope this makes sense.[/QUOTE]