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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
> Full Name: Gregory Fishel > Email Address: address@hidden > Organization: WRAL-TV > Package Version: 5.0u1 > Operating System: MAC OS 10.9.4 > Hardware: > Description of problem: > > I've long wondered about this. When using the color table editor, I > insert a few breakpoints and assign specific RGB values to them. Then I > interpolate between these breakpoints. Upon doing this, the RGB values > at one or both of the breakpoints change. The change is not drastic, but > I'm wondering why it happens at all. For instance, I just went into the > Color Table Editor, created a new color table, and got the default -100 > to 120 32 color palette. I changed the RGB values for the -100 pot to > 0-255-0 and then added a breakpoint at 0, assigning values of 255-150-0 > to it. I then interpolated from -100 to 0, and the rgb values for the > 0 breakpoint changed to 240-157-0. Just curious as to why. > > Thanks! > > I think this is the way of calculation, it is difficult to have the exact number after applying the linear interpolation. Yuan Ticket Details =================== Ticket ID: TZY-420796 Department: Support IDV Priority: High Status: Closed