[gradsusr] pow() function with negative exponent - unusual behavior
L.B.
bcbass2989 at gmail.com
Thu Jan 9 13:41:19 EST 2020
Hello,
I am having an issue with the pow() function using a negative exponent. It
is displaying a constant field where it should be a variable field. I have
attached the grib file as well as the ctl file and all relevant equations
are below:
The grib file contains the precipitation rate. I am trying to create a
field which uses the precip rate as follows:
*'define prate = (pratesfc/25.4)*3600' **Converting the precip rate field
to in/hr*
Plotting this yields a varying precip rate field in inches/hour.
Next, I want to apply the following equation to the prate field:
*'d 0.1*pow(prate,-0.54)'*
The issue is that it creates a constant field with a value of 0.0563103
when it should still be a varying field. Is this a bug with pow() function,
or is something else going on here?
*-------*
William LaForce IV
Meteorologist
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gradsusr.org/pipermail/gradsusr/attachments/20200109/4a1f4c4a/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: namnest.ctl
Type: application/octet-stream
Size: 891 bytes
Desc: not available
URL: <http://gradsusr.org/pipermail/gradsusr/attachments/20200109/4a1f4c4a/attachment-0002.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: nam.t00z.conusnest.hiresf60.tm00.grib2
Type: application/octet-stream
Size: 548950 bytes
Desc: not available
URL: <http://gradsusr.org/pipermail/gradsusr/attachments/20200109/4a1f4c4a/attachment-0003.obj>
More information about the gradsusr
mailing list