how do you plot spatial data (x vs. y) over time?

[PanamaAU]

    I have data collected of a system that is moving over time.  I need to not only plot a static view of the system as it has moved, but would like the graph to be 'live' starting at Tzero and incrementing until the end of the test run, effectively showing the system as the leading edge of the line moving over time.

In additional display windows, I would have other data of concern (for example, sonar signal strength) being plotted in syncronization with the geospatial data.  The problem is I am new to DIADem and cannot seem to figure out how to graph the spatial time series data; statically, much less over time.

TIA

[Brad_Turpin]

Hi TIA,

There's a pretty good chance that we can configure a VIEW layout to give you what you want.  When you talk about spatial data, are you talking in a plane or 3D spatial data?  Also, is your data acquired at constant time intervals or at irregular time intervals?

Would it be possible to post a sample data set so we can see better what sort of data you're working with?
Brad Turpin
DIAdem Product Support Engineer
National Instruments

[PanamaAU]

of course, plotting the depth over time in a chart below would be fine, as well.  Neither system fluctuates that much in the water column to necessitate a spatial graph; especially after viewing it (thanks!).

Now, I have the data smoothed and plotted as a 'flat' graph; how do I make it actually show the lat and long motions as the clock/time elapses?

[Brad_Turpin]

Hi Sean,

Did you have the above question prior to my last email or after it?  I sent you a VIEW layout yesterday which shows the XY position synchronized with the depth vs. time graph below it.  I didn't see lattitude and longitude channels in that data set.  This would be a better conversation to have directly over email as opposed to in the Discussion Forum.

Talk to you soon,
Brad Turpin
DIAdem Product Support Engineer
National Instruments

[ImTired]

Brad: 

Can you help me with the same problem using Labview?

I also have a post in the Labview topic.

Here is my problem:

For example, I have 5 position measurements (y axis)  taken at 5 points (z axis).

I wish to plot these as a 3-d surface chart as a function of time (an indeterminate length - depends how long I run the labview VI) along the x axis.

I wish to only plot 100 time points  at a time (most current to the previous 99 points) and I want this to be like in strip chart mode (i.e. first in first out) ring buffer approach.

I am very new to labview so if an explanation could be provided along with a VI, that would really help me in learning how to manipulate arrays.

Thank you for taking the time to read this.

Bill

[Brad_Turpin]

Hi Bill,

Honestly, I have never figured out how to graph in 3D in LabVIEW.  I believe LabVIEW has updated its 3D plotting since the last time I tried, so maybe it's not hard, but I've never gone back to try it again.

Hopefully your LV post will bear fruit,
Brad Turpin
DIAdem Product Support Engineer
National Instuments

[Kevin_H]

Hey Bill,

Please check the thread you started on ths topic.  I have included a response there.

Regards,

Kevin H

[ElenaS]

Hello,

 I have a similar question to TIA's, and was not able to see how it was solved. I have data (concentration) as a function of height, collected at dif. time intervals (not necessary uniform). I would
like to plot the conc. (Z) on a XY plot where X is time and Y is height. I just started with DIAdem. Thanks

[Brad_Turpin]

Hi Elena,

You will need to use a 3D graph type in REPORT or the new "Contour" display in VIEW that released with DIAdem 11.1.  The details of how to do this will depend on the structure of your data set.  If you would post an example data set or send it to brad.turpin@ni.com, I would be happy to advise you specifically.

Brad Turpin
DIAdem Product Support Engineer

National Instruments