Matt, > I checked my file permissions on that folder, and apparently Windows 7 > defaults to "user" settings for some folders rather than "administrator." > Anyway, I changed that, and was able to write the .cdl file. When I open it > in Excel (assuming it is comma delimited), it looks like this: > > u = > 1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN > 1.#QNAN 1.#QNAN 1.#QNAN > 1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN > 1.#QNAN 1.#QNAN 1.#QNAN > 1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN > 1.#QNAN 1.#QNAN 0.0175796 > -0.08131572 -0.1633865 -0.1815312 -0.1400719 -0.1115065 > -0.1240741 > -0.1486088 -0.1112384 -0.03787675 ... > I only show you in case you know what the 1.#QNAN value makes any sense to > you. I'll ask the folks at NOAA too. In the meantime, thanks very much for > all your help! Those values are "Not a Number" values, floating point representations results of invalid operations, such as dividing 0 by 0 or resulting from numeric underflow when operating on very small numbers close to zero. They can also be the result of using NaN's to represent "missing values", such as sea temperature over land. You would see this in the header output from ncdump, as a variable attribute such as u:_FillValue or u:missing_value, for example, specified as some floating-point number near the edge of the representable range of floats. So it may not be an error at all, but just the way missing values appear in ncdump output, although there is an attempt in ncdump to display such values as "_" instead of as NaN's. Or these out-of-bounds values may be an indication that the model that produced them was generating such values as the result of a numerically unstable algorithm. --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: KPE-603099 Department: Support netCDF Priority: Normal Status: Closed
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