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    <p>Hi Tracey,</p>
    <p>It should work.  Maybe it's how you're converting from an
      argument to a variable.  This little script is an example:</p>
    <p>function main(arg)<br>
       if ( arg = "" )<br>
        say "You need to supply an arg"<br>
       else<br>
        region = subwrd(arg,1)<br>
        if ( region = 'conus' ); say "Cont US"; endif<br>
       endif <br>
      return<br>
    </p>
    <p>With the examples:</p>
    <p>ga-> sample_script    <br>
      You need to supply an arg<br>
      ga-> sample_script conus<br>
      Cont US<br>
      ga-> sample_script pacific<br>
      ga-> <br>
      <br>
    </p>
    <div class="moz-cite-prefix">On 11/26/18 10:21 AM, Tracey wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAEKv=Fx6+SdiLr0XZF++5uM7pJyLGWPkQDd1wawXOra+mEizWA@mail.gmail.com">
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      <div dir="ltr">
        <div class="gmail_default" style=""><font face="arial,
            helvetica, sans-serif">Hi Bill,</font></div>
        <div class="gmail_default" style=""><font face="arial,
            helvetica, sans-serif"><br>
          </font></div>
        <div class="gmail_default" style=""><font face="arial,
            helvetica, sans-serif">It still doesn't seem to work even
            when I take out the parentheses.  Appreciate your suggestion
            though!  Can GrADS handle argument strings in if/else
            statements?</font></div>
        <div class="gmail_default" style=""><font face="arial,
            helvetica, sans-serif"><br>
          </font></div>
        <div class="gmail_default" style=""><font face="arial,
            helvetica, sans-serif">Thanks,</font></div>
        <div class="gmail_default" style=""><font face="arial,
            helvetica, sans-serif">Tracey</font></div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Mon, Nov 26, 2018 at 3:08 PM Bill Reilly <<a
            href="mailto:bill_reilly@compuserve.com"
            moz-do-not-send="true">bill_reilly@compuserve.com</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div text="#000000" bgcolor="#FFFFFF"> Tracey:<br>
            <br>
            Try taking out the parentheses () and see if it works.<br>
            <br>
            Bill<br>
            <pre class="m_3185393409181370346moz-signature" cols="72">--

Bill Reilly

(+34) 686-110-748

<a class="m_3185393409181370346moz-txt-link-abbreviated" href="mailto:bill@passageweather.com" target="_blank" moz-do-not-send="true">bill@passageweather.com</a>
<a class="m_3185393409181370346moz-txt-link-abbreviated" href="http://www.passageweather.com" target="_blank" moz-do-not-send="true">www.passageweather.com</a>

<a class="m_3185393409181370346moz-txt-link-abbreviated" href="mailto:bill@brwebworks.com" target="_blank" moz-do-not-send="true">bill@brwebworks.com</a>
<a class="m_3185393409181370346moz-txt-link-abbreviated" href="http://www.brwebworks.com" target="_blank" moz-do-not-send="true">www.brwebworks.com</a> 

</pre>
            <div class="m_3185393409181370346moz-cite-prefix">On
              26/11/2018 20:18, Tracey wrote:<br>
            </div>
            <blockquote type="cite">
              <div dir="ltr">
                <div dir="ltr">
                  <div class="gmail_default"><font face="arial,
                      helvetica,&#xA; sans-serif" color="#000000">Hi
                      Jeff,</font></div>
                  <div class="gmail_default"><font face="arial,
                      helvetica,&#xA; sans-serif" color="#000000"><br>
                    </font></div>
                  <div class="gmail_default"><font face="arial,
                      helvetica,&#xA; sans-serif" color="#000000">The
                      input string is being read into the script
                      correctly, as I've put a "</font><font
                      face="arial, helvetica, sans-serif"
                      color="#000000">say region" into the script right
                      before the if statement and it is correctly
                      outputting "conus."  So it seems to be the actual
                      if statement that is not working for some reason.</font></div>
                  <div class="gmail_default"><font face="arial,
                      helvetica,&#xA; sans-serif" color="#000000"><br>
                    </font></div>
                  <div class="gmail_default"><font face="arial,
                      helvetica,&#xA; sans-serif" color="#000000">Thanks,</font></div>
                  <div class="gmail_default"><font face="arial,
                      helvetica,&#xA; sans-serif" color="#000000">Tracey</font></div>
                </div>
              </div>
              <br>
              <div class="gmail_quote">
                <div dir="ltr">On Mon, Nov 26, 2018 at 2:03 PM Jeff Duda
                  <<a href="mailto:jeffduda319@gmail.com"
                    target="_blank" moz-do-not-send="true">jeffduda319@gmail.com</a>>
                  wrote:<br>
                </div>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  <div dir="ltr">First test whether the input string is
                    being read into the script correctly. Then check to
                    see if the if block is being tripped by inserting
                    print statements.
                    <div><br>
                    </div>
                    <div>Jeff Duda</div>
                  </div>
                  <br>
                  <div class="gmail_quote">
                    <div dir="ltr">On Mon, Nov 26, 2018 at 11:56 AM
                      Tracey <<a href="mailto:tdorian10@gmail.com"
                        target="_blank" moz-do-not-send="true">tdorian10@gmail.com</a>>
                      wrote:<br>
                    </div>
                    <blockquote class="gmail_quote" style="margin:0 0 0
                      .8ex;border-left:1px #ccc solid;padding-left:1ex">
                      <div dir="ltr">
                        <div class="gmail_default"
                          style="font-family:times new
                          roman,serif;font-size:large">
                          <div class="gmail_default"
                            style="font-family:Arial,Helvetica,sans-serif;font-size:small"><font
                              face="arial, helvetica, sans-serif">Hi,</font></div>
                          <div class="gmail_default"
                            style="font-family:Arial,Helvetica,sans-serif;font-size:small"><br>
                          </div>
                          <div class="gmail_default"
                            style="font-family:Arial,Helvetica,sans-serif;font-size:small"><font
                              face="arial, helvetica, sans-serif">I was
                              wondering if any GrADS users could help me
                              with this issue I am having.  </font><span
style="font-family:arial,helvetica,sans-serif">In my GrADS script, I
                              have:</span></div>
                          <div class="gmail_default"
                            style="font-family:Arial,Helvetica,sans-serif;font-size:small"><font
                              face="arial, helvetica, sans-serif"><br>
                            </font></div>
                          <div class="gmail_default"
                            style="font-family:Arial,Helvetica,sans-serif;font-size:small"><font
                              face="arial, helvetica, sans-serif">
                              <div class="gmail_default">if (region
                                ='conus')</div>
                              <div class="gmail_default">  'set lat 25
                                58'</div>
                              <div class="gmail_default">  'set lon 230
                                297'</div>
                              <div class="gmail_default">endif</div>
                              <div><br>
                              </div>
                              <div>But the above lines are not working. 
                                When I run the GrADS script, I input a
                                "region" as an argument.  I want to say
                                if the region is "conus", then set the
                                longitudes and latitudes to these set
                                numbers.  No matter how I change the
                                quotations and the spaces, it doesn't
                                seem to be re-setting the latitudes and
                                longitudes.  What am I doing wrong?  </div>
                              <div><br>
                              </div>
                              <div>Thank you,</div>
                              <div>Tracey</div>
                            </font></div>
                        </div>
                      </div>
                      _______________________________________________<br>
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                    </blockquote>
                  </div>
                  <br clear="all">
                  <div><br>
                  </div>
                  -- <br>
                  <div dir="ltr"
                    class="m_3185393409181370346m_1855870370453814240gmail_signature"
                    data-smartmail="gmail_signature">
                    <div dir="ltr">
                      <div>
                        <div dir="ltr">
                          <div dir="ltr">
                            <div dir="ltr">
                              <div dir="ltr">
                                <div dir="ltr"><font size="2"><span>Jeff
                                      Duda, Research Scientist</span></font></div>
                                <div dir="ltr"><font size="2"><span></span></font>University
                                  of Colorado Boulder</div>
                                <div dir="ltr"><font size="2"><span></span></font>Cooperative
                                  Institute for Research in
                                  Environmental Sciences</div>
                                <div dir="ltr">NOAA/OAR/ESRL/Global
                                  Systems Division<br>
                                  <font size="2"><span> <span>Boulder,
                                        CO<br>
                                      </span></span></font> </div>
                              </div>
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              <br>
              <pre>_______________________________________________
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</pre>
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