[ncl-talk] Mapping Radar (and that pesky "where" statement).

[Barry Lynn]

Hi:

I would like to make a radar plot using the original coordinates in the
enclosed nc file, after converting to cartesian coordinates.

The original dimensions of dbz were time_range; the ones in the file are
different. Still, after using the new dimensions, I get
something that looks reasonable.

However, I was told that I need to convert values < 0 (by adding 256), and
then multiply by 0.5 and subtract 33 to get actual radar values.

But, when I use the where statement on the byte values or even integer
values I don't get any change in the output. That is, the min/max before
and after the where statement stays the same.

To make matters even more confusing: the map that results has values from
about 80 to 300, even though the min/max are listed as -127 to 128.

Thank you for your help -- it would be great to be able to plot radar from
nc file obtained from the weather and climate tool kit.​
 KOKX_V06_20130209_000138.nc
<https://drive.google.com/file/d/0B3E3GjUeKpBdUnlTdUdOX21HNEk/view?usp=drive_web>
​

-- 
Barry H. Lynn, Ph.D
Senior Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
Weather and Climate Focus
http://weather-it-is.com
Jerusalem, Israel
Local: 02 930 9525
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Int-IS: x972 2 930 9525
US 914 432 3108
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