RoboRealm Forum

No Title

Tue, 30 Nov 1999 00:11:00 EST

That's great thanks.

I managed to use the SetTimedVariable feature to accomplish a similar effect. It seems to work...

No Title

Tue, 30 Nov 1999 00:11:00 EST

Dawson,

You can use a bit of programming to accomplish this. Assuming that your pipeline runs at a max of 30 fps the following would give you COG values from about a second ago.

delaySize = 30

queuePos = GetVariable("cog_queue_pos")
queue = GetArrayVariable("cog_queue")
if not isArray(queue) or ubound(queue)<30 then
ReDim queue(delaySize)
end if

delayedCog = queue(queuePos)
queue(queuePos) = GetVariable("COG_X")
queuePos = queuePos + 1
if queuePos>=delaySize then
queuePos = 0
end if

SetArrayVariable "cog_queue", queue
SetVariable "cog_queue_pos", queuePos
SetVariable "delayed_cog", delayedCog

and your delayed value will now be in the variable delayed_cog. Note that delaySize specifies how old the variable will be. Also note that the first 30 sample will all be zero until the queue is filled ...

STeven.

reading values after time lapse

Tue, 30 Nov 1999 00:11:00 EST

How do i read a variable (exp COG_X) value at Time = 1second ago and compare this with the current value (Time = current)

The chart_variables stores these values. How do i access it and what is the data capture rate?