RealTime Simulation

hudaikara · Post by **hudaikara** » Fri May 19, 2006 3:34 am

Hi there,
I have installed DPlotJr and testing it in my program for real time simulation of an industrial process. I admit it is at least 4 times faster than what I was using before. I will get a distributable licence once I solve couple of issues. The important one being is this: My program does a calculation minute by minute and at some point it does an optimisation. To do the optimisation it needs a sample analysis from the process. Timing of the sample taking for analysis is important (let's say 2:00 pm).But the analysis results received roughly 20 min later. So we are at 2:20 in real time. Now I need to go back in time and do my optimisation at the time sample was taken (2:00pm). Then recalculate the process and show it in my XYXY plot (all takes less than a minute) and continue in real time (2:20 pm).When I all do in DPlot the graph becomes messy cos it draws continues lines (like scribling).What I would like to do is delete the last 20 min of data and redraw it from 2:00 pm with the optimised values. That way I will get a continues line. Is this possible? Or is there a way to get around this? I am using VB 6.0.
Thanks in advance,
Hudai Kara

Post by **DPlotAdmin** » Fri May 19, 2006 7:23 am

You can either 1) use EditTruncate to delete the points you no longer want, or 2) assuming you've kept a copy of the data in your own program, just delete the entire curve (EditErase or EditEraseData), and plot it again.

hudaikara · Post by **hudaikara** » Wed May 24, 2006 8:49 am

Hi again,
Thanks alot for the quick reply! I have checked the help fime but couldnt find [EditTruncate] command. Could you please post a syntax showing teh usage of this? Let's say I am deleting (truncating) X,Y values from curve 1.
Thanks alot!
Hudai

Post by **DPlotAdmin** » Wed May 24, 2006 8:57 am

If you search for "EditTruncate" you'll come to:

[EditTruncate(from,to)]

Eliminates all data outside the range specified by from < X < to. Operates on the curve or curves selected with the SelectCurve command.

Post by **DPlotAdmin** » Wed May 24, 2006 8:59 am

Whoops. I just noticed you said DPlot Jr, not the full version. EditTruncate isn't supported by DPlot Jr. So you have no choice but to delete the curve and plot it again.