[gradsusr] SET A CONSTANT

[Stephen McMillan]

Marian,
You are correct, regarding the "if" function in your version of OpenGrADS.
The syntax I provided was for the latest (2.2.1) version.  In the latest
OpenGrADS version, you can either use "if" with the syntax as I provided,
or use "if_" with the syntax you provided.  Either way, you're good to go!

Best wishes--
Stephen

On Thu, Mar 14, 2019 at 10:53 PM AMS EmsiWx Bytča <emsiwx at pocasie-bytca.sk>
wrote:

> Once again thank you both guys, gave up const/maskout after sveral hours
> combining :D , used IF (did not know that it is already in 2.1.x version
> which I have), the correct syntax is:
>
>
> 'define A=if(tempdif,>,25,0,if(tempdif,>=,22,2,6))'
>
>
> Marian
>
>
>
> Dňa 14. 3. 2019 o 20:04 AMS EmsiWx Bytča napísal(a):
>
> Thank you Jeff and Stephen, will try to play with const/maskout first,
> then I will reinstall my Opengrads and try the if statement.
>
>
> Marian
> Dňa 14. 3. 2019 o 15:09 Stephen McMillan napísal(a):
>
> Marian,
>
> One correction to what I sent...
>
> 'define A=if(dt>25,0,if(dt>=22,2,6))'     added the second )
>
> Stephen
>
> On Thu, Mar 14, 2019 at 10:06 AM Stephen McMillan <
> smcmillan at planalytics.com> wrote:
>
>> Marian,
>>
>> If you have the latest version of GrADS or OpenGrADS, you could do
>> something like this:
>>
>> 'define dt=t850-t500'
>> 'define A=if(dt>25,0,if(dt>=22,2,6)'
>> 'd A'
>>
>> Stephen McMillan
>>
>> On Wed, Mar 13, 2019 at 4:14 PM AMS EmsiWx Bytča <emsiwx at pocasie-bytca.sk>
>> wrote:
>>
>>> Dear all,
>>>
>>>
>>> I am going crazy combining const/maskout to get what I need.
>>>
>>> I need to set A according the following:
>>>
>>> A= 0 when T850-T500 >25
>>>
>>> A= 2 when T850-T500 22-25
>>>
>>> A= 6 when T850-T500 <22
>>>
>>>
>>> Would like to ask any master of const/maskout for help.
>>>
>>>
>>> Thank you very much in advance.
>>>
>>>
>>> Marian
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>
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