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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Luis: As far as I know, newUnit()'s parameters are: data, name-for-unit, valid-unit If you use the Formula: Misc -> Change Unit, you would be prompted for the name and the unit. I picked "deg_K" since I thought perhaps your ts_ data was some kind of temperature. It is very important to use the values in the udunits (like "deg_K") for all your units....if you write the netCDF files, then I suggest you include the correct values -- things like "degrees" don't mean much. If you did not write the files, I suggest you talk to whomever did and encourage them to make the appropriate chages. Best wishes, tom On Tue, Nov 2, 2010 at 1:54 PM, Luis Del Castillo <luis.delcastillo@xxxxxxxxxxxx> wrote: > It works perfectly can you explain the meaning of newUnit(a, "degK", "deg_K") > a = var > degK = old unit > deg_K = new unit > > something like that right > thanks > Luis > > -----Original Message----- > From: Tom Whittaker [mailto:whittaker@xxxxxxxx] > Sent: martes, 02 de noviembre de 2010 12:28 p.m. > To: Luis Del Castillo > Cc: idvusers@xxxxxxxxxxxxxxxx > Subject: Re: [idvusers] addition > > Luis -- > > Okay -- I had some time before leaving to download and look at your > files. The problem is that the units of the two grids are not > compatible. > > IDV strictly enforces unit compatibility when adding and subtracting. > You have one parameter with units of "degrees" and the other has no > units. You need to make these units a) real units and b) compatible, > if you want to add them. > > Before writing new files, you can this this by editing your "a+b" > formula to change the units: > > newUnit(a, "degK", "deg_K") + newUnit(b, "degK", "deg_K") > > I don't know if your data fields are both temperatures or what, but > this will show you that by making compatible units, the summation can > be forced to work... > > Good luck, > > tom > > On Tue, Nov 2, 2010 at 11:19 AM, Luis Del Castillo > <luis.delcastillo@xxxxxxxxxxxx> wrote: >> Nop not work, in each files exist one variable so when y try to add 34.5 + >> 3 using add(S1, S2) the answer is 34.5 not 37.5 >> >> Luis >> > > -- > Tom Whittaker > University of Wisconsin-Madison > Space Science & Engineering Center (SSEC) > Cooperative Institute for Meteorological Satellite Studies (CIMSS) > 1225 W. Dayton Street > Madison, WI 53706 USA > ph: +1 608 262 2759 > > _______________________________________________ > idvusers mailing list > idvusers@xxxxxxxxxxxxxxxx > For list information, to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ > -- Tom Whittaker University of Wisconsin-Madison Space Science & Engineering Center (SSEC) Cooperative Institute for Meteorological Satellite Studies (CIMSS) 1225 W. Dayton Street Madison, WI 53706 USA ph: +1 608 262 2759
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