<div dir="ltr"><div dir="ltr">Marian,<div>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!</div><div><br></div><div>Best wishes--</div><div>Stephen</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 14, 2019 at 10:53 PM AMS EmsiWx Bytča <<a href="mailto:emsiwx@pocasie-bytca.sk">emsiwx@pocasie-bytca.sk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>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:<br>
</p>
<p><br>
</p>
<p>'define A=if(tempdif,>,25,0,if(tempdif,>=,22,2,6))'</p>
<p><br>
</p>
<p>Marian</p>
<p><br>
</p>
<p><br>
</p>
<div class="gmail-m_1754790531933285173moz-cite-prefix">Dňa 14. 3. 2019 o 20:04 AMS EmsiWx
Bytča napísal(a):<br>
</div>
<blockquote type="cite">
<p>Thank you Jeff and Stephen, will try to play with const/maskout
first, then I will reinstall my Opengrads and try the if
statement.</p>
<p><br>
</p>
<p>Marian<br>
</p>
<div class="gmail-m_1754790531933285173moz-cite-prefix">Dňa 14. 3. 2019 o 15:09 Stephen
McMillan napísal(a):<br>
</div>
<blockquote type="cite">
<div dir="ltr">Marian,
<div><br>
</div>
<div>One correction to what I sent...</div>
<div><br>
</div>
<div>'define A=if(dt>25,0,if(dt>=22,2,6))' added the
second )</div>
<div><br>
</div>
<div>Stephen</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Mar 14, 2019 at
10:06 AM Stephen McMillan <<a href="mailto:smcmillan@planalytics.com" target="_blank">smcmillan@planalytics.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Marian,
<div><br>
</div>
<div>If you have the latest version of GrADS or OpenGrADS,
you could do something like this:</div>
<div><br>
</div>
<div>'define dt=t850-t500'</div>
<div>'define A=if(dt>25,0,if(dt>=22,2,6)'</div>
<div>'d A'</div>
<div><br>
</div>
<div>Stephen McMillan</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Mar 13, 2019 at
4:14 PM AMS EmsiWx Bytča <<a href="mailto:emsiwx@pocasie-bytca.sk" target="_blank">emsiwx@pocasie-bytca.sk</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Dear all,<br>
<br>
<br>
I am going crazy combining const/maskout to get what I
need.<br>
<br>
I need to set A according the following:<br>
<br>
A= 0 when T850-T500 >25<br>
<br>
A= 2 when T850-T500 22-25<br>
<br>
A= 6 when T850-T500 <22<br>
<br>
<br>
Would like to ask any master of const/maskout for help.<br>
<br>
<br>
Thank you very much in advance.<br>
<br>
<br>
Marian<br>
<br>
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