<div dir="ltr"><div class="gmail_default" style="font-size:small">Jatin's suggestion is a good one, because you want to be careful about plotting single markers in this way. You have two rather large do loops which are plotting one marker at a time. This could be incredibly slow.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I think you could also get rid of the double do loop, if you can spare a little extra memory usage:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default"><font face="monospace, monospace">z2dims = dimsizes(z2)</font></div><div class="gmail_default" style="font-size:small"><font face="monospace, monospace">i_save = ndtooned(conform(z2,ispan(0,z2dims(0),1),0)</font></div><div class="gmail_default" style="font-size:small"><div class="gmail_default"><font face="monospace, monospace">j_save = ndtooned(conform(z2,ispan(0,z2dims(1),1),1)</font></div><div><font face="monospace, monospace">i_save@_FillValue = -999</font></div><div><div><font face="monospace, monospace">j_save@_FillValue = -999</font></div></div><div><font face="monospace, monospace"><br></font></div></div><div class="gmail_default" style="font-size:small"><span style="font-family:monospace,monospace">z2_1d = ndtooned(z2)</span><br></div><div class="gmail_default" style="font-size:small"><font face="monospace, monospace">imsg = ind(ismissing(z2_1d).or.z2_1d.ge.0)</font></div><div class="gmail_default" style="font-size:small"><font face="monospace, monospace"><br></font></div><div class="gmail_default" style="font-size:small"><font face="monospace, monospace">i_save(imsg) = i_save@_FillValue</font></div><div class="gmail_default" style="font-size:small"><div><div class="gmail_default"><font face="monospace, monospace">j_save(imsg) = j_save@_FillValue</font></div><div class="gmail_default"></div></div></div><div class="gmail_default" style=""><div class="gmail_default" style=""><font face="monospace, monospace"><span style="font-size:12.8px">add_poly = gsn_add_polymarker(wks,plot,i_</span><span style="font-size:12.8px">save,j_save,polyres)</span></font></div><div class="gmail_default" style=""><font face="monospace, monospace"><br style="font-size:12.8px"><span style="font-size:12.8px">draw(plot)</span><br style="font-size:12.8px"><span style="font-size:12.8px">frame(wks)</span></font><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 22, 2016 at 3:10 AM, Jatin Kala <span dir="ltr"><<a href="mailto:jatin.kala.jk@gmail.com" target="_blank">jatin.kala.jk@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Here's a suggestion:<br>
<br>
i_save = new(100000,integer)<br>
j_save = new(100000,integer)<br>
counter = 0<span class=""><br>
<br>
do i=0,127<br>
do j=0,364<br>
if(.not.ismissing(z2(i,j)).and.z2(i,j).lt. 0.0)then<br></span>
i_save(counter) = i<br>
j_save(counter) = j<br>
counter = counter + 1<br>
end if<br>
end do<br>
end do<br>
<br>
add_poly= gsn_add_polymarker(wks,plot,i_save,j_save,polyres)<br>
draw(plot)<br>
frame(wks)<div><div class="h5"><br>
<br>
<div>On 22/02/2016 3:10 PM, Anusha
sathyanadh wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div class="h5">
<div dir="ltr">
<div>
<div>Dear Sir,<br>
(haley_at_nyahnyahspammersnyahnyah)<br>
<br>
</div>
I have seen your reply to the query <em>to overcome
this <br>
<br>
warning:TransformPostDraw: tfPolyDrawList element 0 is
invalid
</em><br>
<em>> warning:TransformPostDraw: tfPolyDrawList
element 1 is invalid
</em><br>
<em>> warning:TransformPostDraw: tfPolyDrawList
element 2 is invalid
</em><br>
<br>
<br>
like<br>
<br>
<br>
a = new(3,graphic)
<br>
a(0) = gsn_add_polygon(wks,plot,x1,y1,gsres)
<br>
a(1) = gsn_add_polyline(wks,plot,x2,y2,gsres)
<br>
a(2) = gsn_add_polymarker(wks,plot,x3,y3,gsres)
<br>
<br>
</div>
but it doesnt work for my script as I have to use loop
within..Can u help to get out of this trouble?<br>
<br>
<br>
do i=0,127<br>
do j=0,364<br>
if(.not.ismissing(z2(i,j)).and.z2(i,j).lt. 0.0)then<br>
add_poly= gsn_add_polymarker(wks,plot,i,j,polyres)<br>
<br>
end if<br>
draw(plot)<br>
end do<br>
end do<br>
frame(wks)<br clear="all">
<div>
<div>
<div><br>
-- <br>
<div>
<div dir="ltr"><b style="color:rgb(0,0,0)"><i><span style="font-family:georgia,serif">ANUSHA
SATHYANADH</span><br style="font-family:georgia,serif">
<span style="font-family:georgia,serif">Senior
Research Fellow</span><br style="font-family:georgia,serif">
<span style="font-family:georgia,serif">Deparment
of Atmospheric and Space Sciences</span><br style="font-family:georgia,serif">
<span style="font-family:georgia,serif">Pune
university</span><br>
</i></b><br>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<br>
</div></div><pre>_______________________________________________
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<br>
<pre cols="72">--
Dr. Jatin Kala
Lecturer in Atmospheric Science
Murdoch University,Perth, Western Australia
Tel: <a href="tel:%28%2B618%29%209360%206297" value="+61893606297" target="_blank">(+618) 9360 6297</a>
<a href="http://www.jatinkala.com/" target="_blank">http://www.jatinkala.com/</a>
</pre>
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