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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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 Rod, re: which line is your range and bearing tool? > It's the green line. OK. re: > How does it touch 5 pixels and not 2? I only see two > distinct pixels colors. Can you explain that part to me. The line touches/intersects 5 pixels. There are only two different pixel values in the 5 touched/intersected, however. If you were to use the pixels to do some statistics, you would need to include all 5 in your calculation. re: > The red line is the cross sectional area for the radar. OK, that is what I originally thought, but when I brought up a range and bearing tool, the line I see in my IDV instance has three identifiable points: plus sign - one end triangle - the middle filled box - the other end re: I assume that the storm motion would always be referred to like wind speeds: a wind of 270 degrees is coming directly out of the west. Is this what you are asking? > Yes I am trying to relate the storm motion in degrees is what I should set > the azimuth angle? If my interpretation is correct? Yes, I believe so. Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: KUF-449541 Department: Support McIDAS Priority: Normal Status: Closed