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James, > I was trying udunits for ppm, but it complains: > > You have: ppm > udunits2: Don't recognize "ppm" > > But it seems to recognize ppt: > > Is this a bug? Also can't convert from ppt to % for example, or to ppm or ppb. It seems to me that the UDUNITS package should handle "ppm" and be able to convert between it and "%". I'll investigate and let you know. > ------------------------------------------------------------------------------ > | James E. Johnson | address: | > | Wyle Information Systems, Inc. | NASA Goddard Space Flight Center | > | e-mail: address@hidden | Distributed Active Archive Center | > | phone: 301-614-5121 | Code 610.2, Bldg 32, Room S130G | > | fax: 301-614-5268 | Greenbelt, MD 20771 | > ------------------------------------------------------------------------------ Regards, Steve Emmerson Ticket Details =================== Ticket ID: MZJ-180852 Department: Support UDUNITS Priority: Normal Status: Closed