This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Hi Bill, Wow, this is the triple crown of support requests! > > Just tried out the differences over time, and it does just what I hoped. > Very nice . :-) > Thanks. > I have added to this display accumulated precipitation over the same 24 > hour periods; however, > I had to do each 24 hour period separately. And each appears on all > frames of the display. > It would be much better if only the correct summation was shown on each > frame, and > if the display could be created with one invocation. In other words, > could we do something > similar to the time differences with summation? (If we had N grids and > wanted to sum > 2consective grids; 1+2 --> at time 2, 3+4 --> at time 4, 5+6 --> at time > 6, etc. There are now timeStepDifference and timeStepSum formulas. Those formulas use a -1 offset, i.e., D(T) = D(T) +- D(T-1) > > Since I was summing precip with a formula, the list of possible displays > included the > topography display in the 3-D group. I thought this was pretty neat > because I could display the > field using mesh or points in addition to the usual contours and color > fill. It looked pretty sharp > and seemed very useful. It also looked 2-D to me. Might this option be > added as a plan view > display? > I just added this option to the colorshaded plan view. You can now set the display mode to be solid, mesh or points. > When precip was displayed as a topography display, I made the values > less than .01 inches > transparent to improve appearance. After downloading the nightly build > today, I could no longer > change the transparency of the mesh display (my bundle no longer worked > correctly). Did > something change ??? (I can change transparency with other displays.) > This is a bug. actually you couldn't even set the color table on the topography control. Its fixed now. We'll have a nightly build out by Monday with all of these changes. -Jeff Ticket Details =================== Ticket ID: COI-760964 Department: Support IDV Priority: Critical Status: Closed