Doug, Charles, and Andrew,
I was about to chime in with the same suggestion that Doug makes here, when he beat me to it. I think, using current features, your best option would be to use the new probe arithmetic. (See "More Flexible Probes" at http://www.intermapper.com/im42.html)
However, I will also file an enhancement request based on your further comments about how this could work with added features. Thank you all very much for your feedback and suggestions, and please let us know if you have any more ideas.
Thanks, Ian Struckhoff Tech Support Dartware, LLC
On Oct 4, 2004, at 1:22 PM, Doug Weathers wrote:
I've been mulling this over myself. The only idea I've had is to build a custom probe that uses the new arithmetic features to add the desired values together into a variable, which you then put in the info window display. It should show up as an underlined value, which you can then click on to put into a strip chart.
I haven't tested this yet, but I don't see why it wouldn't work. It's a pain in the butt, though, having to do a custom probe for each new chart you might want.
How would I implement this feature? I think I'd add it to the strip chart interface rather than stick it into the probes. Probes should be simple data-collecting entities and shouldn't have a lot of calculation buried in them, IMHO. Besides, users shouldn't be forced to deal with probe file internals on a regular basis.
I envision something under the Data tab in the Chart Options dialog, a
button called New Calculated Value or something like that. When
clicked, it opens up a window into which you can type a formula, the
result of which will be the value that's graphed on the chart. Ideally,
the variables will be dragged from the Get Info windows, just like how
they get added to a strip chart today.
In other words, instead of dragging values directly into a strip chart, you drag them into a calculation field and put operators between them.
Failing this, an all-textual system would work. Something like how
Excel works - you can include values from other spreadsheets by using a
special syntax that prefixes the name of the spreadsheet before the cell
reference. This might allow us to graph values from probes on different
maps, too. Hmmm....
OK, back to work for me.
Later,
Doug
-- Doug Weathers, Network Administrator St. Charles Medical Center
[EMAIL PROTECTED] 10/01/2004 2:16:06 AM >>>Hello folks,
Is there a way to stack data items in a chart so that they provide an aggregate total of all the values?
Cheers,
Andrew -- Andrew Beresford <[EMAIL PROTECTED]> Network Administrator - CiCS - University of Sheffield
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