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I guess I did not fully understand the question. You have drawn the 0-degree temperature contour; what exactly do you want to output to a text file? The lat/lon of the contour’s position? —Jennifer
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<div>On Sep 3, 2016, at 7:19 PM, Taixia <<a href="mailto:wutxcn@GMAIL.COM">wutxcn@GMAIL.COM</a>> wrote:</div>
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<div dir="ltr">Hi Jennifer,
<div>Thanks a lot for your reply. </div>
<div>Problem still exists,forgive a Grads beginner. The data I used is the NECP 5 years average air temperature, I'd like get the zero degree temperature line. After "set clevs 0", I got the contours graphic (see attachment). But I still cannot get the output
file as your steps. Could you please have a look at the attachments and help? </div>
<div>---Tim</div>
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<div class="gmail_quote">On Fri, Sep 2, 2016 at 7:20 PM, Jennifer M Adams <span dir="ltr">
<<a href="mailto:jadams21@gmu.edu" target="_blank">jadams21@gmu.edu</a>></span> wrote:<br>
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<div style="word-wrap:break-word">After drawing a plot, you can check the contour levels used with ‘q shades’ or ‘q contours’. For line contours, the output looks like this (first column is color number, second column is contour value):
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<div><font face="Courier" style="font-size:14px">Number of levels = 11</font></div>
<div><font face="Courier" style="font-size:14px">9 50000</font></div>
<div><font face="Courier" style="font-size:14px">14 55000</font></div>
<div><font face="Courier" style="font-size:14px">4 60000</font></div>
<div><font face="Courier" style="font-size:14px">11 65000</font></div>
<div><font face="Courier" style="font-size:14px">13 70000</font></div>
<div><font face="Courier" style="font-size:14px">3 75000</font></div>
<div><font face="Courier" style="font-size:14px">10 80000</font></div>
<div><font face="Courier" style="font-size:14px">12 85000</font></div>
<div><font face="Courier" style="font-size:14px">8 90000</font></div>
<div><font face="Courier" style="font-size:14px">2 95000</font></div>
<div><font face="Courier" style="font-size:14px">6 100000</font></div>
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<div>If you want to write this to a file, here is a script fragment:</div>
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<div>‘q contours’</div>
<div>rc=write(“contourinfo.txt”,<wbr>result)</div>
<div>rc=close(“contourinfo.txt”)</div>
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<div>—Jennifer</div>
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<div>On Sep 1, 2016, at 9:57 PM, Taixia <<a href="mailto:wutxcn@GMAIL.COM" target="_blank">wutxcn@GMAIL.COM</a>> wrote:</div>
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<div dir="ltr">Anybody knows how to output the contour value (such as set clevs 0) to .txt or .dat file (not graphic)? Thanks.</div>
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<div style="font-size:12px">Jennifer Miletta Adams<br>
Center for Ocean-Land-Atmosphere Studies (COLA)<br>
George Mason University<br>
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<div style="font-size: 12px; orphans: 2; widows: 2;">--</div>
<div style="font-size: 12px; orphans: 2; widows: 2;">Jennifer Miletta Adams<br>
Center for Ocean-Land-Atmosphere Studies (COLA)<br>
George Mason University<br>
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