Hi Peter,
I think this is one you have to work at.... I had a similar application
once but with multiple traces that a user could select to view N of M. My
solution was to hold all the data in a 2D array and have a 'switch' to pipe
in the relevant columns to the X vs Y plot. Axis scaling can be controlled
via the control input pin to give the desired viewing window.
Alternatively, you might consider an ActiveX control. One that I looked at
was a strip chart from IOCOMP (www.iocomp.com) although a quick surf of the
web will likely reveal lots of goodies.
Regarding the SCROLL bars - note these are MODAL i.e. all other VEE activity
stops whilst they are active!! (No execution of parallel threads etc).
Hope this helps,
Andy
-----------------------
Andy Street
Technical Consultant
Agilent Technologies
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I think this is one you have to work at.... I had a similar application
once but with multiple traces that a user could select to view N of M. My
solution was to hold all the data in a 2D array and have a 'switch' to pipe
in the relevant columns to the X vs Y plot. Axis scaling can be controlled
via the control input pin to give the desired viewing window.
Alternatively, you might consider an ActiveX control. One that I looked at
was a strip chart from IOCOMP (www.iocomp.com) although a quick surf of the
web will likely reveal lots of goodies.
Regarding the SCROLL bars - note these are MODAL i.e. all other VEE activity
stops whilst they are active!! (No execution of parallel threads etc).
Hope this helps,
Andy
-----------------------
Andy Street
Technical Consultant
Agilent Technologies
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looks like I am testing the limits of Vee graphing capabilities.
I like to have a choice between several arryas of data that get continuously updated but would like to look only at the end of it with the ability to scroll back.
The last is easily done by a strip chart. However Vee help says (and they are right:
Unlike other graphical displays, array data will be appended to the end of the Strip Chart trace, rather than first clearing the trace.
So I end up with the rest of the first array chosen and the new one appended to it. So a clear at activate doesnt help. Hideous, isnt it?
XY chart does the trick but does not allow me to have a moving window of the whole data set.
Is there a solution other then using external graphing software (I really dont want to go into that).
I am using Vee 5 on NT 4 (by the way, is that in Vee 6 any different?)
And while I am at it, a comment to the Vee folks. Nice to have a scroll bar but does the program really need to pause as long as I scroll back? Or am I getting it again not right?
Any help would be greatly appreciated. I am nearly where I want to be.
All the best
Peter
Dr. Peter Braun
Royal Veterinary and Agricultural University
Dept. of Agric. Sci.
Sct. Horticulture
Agrovej 10
DK-2630 Taastrup
Denmark
Tel: +45-35 28 35 34
Fax: +45-35 28 34 78
Email: PBR@KVL.DK
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