<div dir="ltr">Hi Muhammad,<div>I'm taking a guess as I cannot see your script, but should this:</div><div>opts@vcLineArrowThicknessF = 3<br></div><div>be this:</div><div>opts_va@vcLineArrowThicknessF = 3<br></div><div><br></div><div>Setting vcMinDistanceF is the easiest way to thin the vectors:</div><div>opts_va@vcMinDistanceF = 0.014<br></div><div>Try increasing that number to see if that thins the vectors out enough. Alternatively you can subset the vector data passed to the plotting function, for example the following will pass every other lat/lon point to the plotting routine:</div><div>plot = gsn_csm_vector(wks,uwnd(::2,::2),vwnd(::2,::2),vres)</div><div><br></div><div>If you have any further questions let ncl-talk know.<br>Adam</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 23, 2019 at 11:39 PM Muhammad Omer Mughal <<a href="mailto:m.mughal1@graduate.curtin.edu.au">m.mughal1@graduate.curtin.edu.au</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"><br>
Dear NCL team<br>
<br>
Kindly see the two plots attached. In the old setting the arrows were thin and at some points too small to be seen in the plots. I wanted to make the plots thicker so I used the following new settings (see attached plot)<br>
<br>
opts@vcLineArrowThicknessF = 3<br>
opts_va@vcGlyphStyle = "LineArrow"<br>
opts_va@vcLineArrowColor="red"<br>
opts_va@vcMapDirection = False<br>
opts_va@vcRefMagnitudeF = 4<br>
opts_va@vcRefLengthF = 0.05<br>
opts_va@vcMinDistanceF = 0.014<br>
<br>
But now I see the arrows too densely packed and also they are not as thick as I expected them to be. I also have the restriction that I cannot change the reference magnitude. <br>
<br>
I want to know how to reduce the arrows density and increase their thickness. I tried using <br>
opts_va@NumVectors = 33 <br>
But it was overridden . I would be greatful to have your suggestions.<br>
<br>
Regards <br>
<br>
Muhammad Omer Mughal <br>
MSc BSc Mechanical Engineering<br>
PhD Research Scholar <br>
Remote Sensing and Satellite Research Group <br>
Department of Imaging and Applied Physics<br>
Curtin University<br>
<br>
Curtin University<br>
Tel | +61 8 9266 7962 <br>
Fax | +61 8 9266 2377<br>
Mobile | 0470 237 525 <br>
<br>
Email | <a href="mailto:m.mughal1@postgrad.curtin.edu.au" target="_blank">m.mughal1@postgrad.curtin.edu.au</a> <br>
Web | <a href="http://curtin.edu.au" rel="noreferrer" target="_blank">http://curtin.edu.au</a><br>
<br>
<br>
Curtin University is a trademark of Curtin University of Technology. <br>
<br>
CRICOS Provider Code 00301J (WA), 02637B (NSW) <br>
<br>
<br>
<br>
_______________________________________________<br>
ncl-talk mailing list<br>
<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
List instructions, subscriber options, unsubscribe:<br>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" rel="noreferrer" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a><br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div><span><font color="#888888">Adam Phillips <br></font></span></div><span><font color="#888888">Associate Scientist, </font></span><span><font color="#888888">Climate and Global Dynamics Laboratory, NCAR<br></font></span></div></div><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli/" target="_blank">www.cgd.ucar.edu/staff/asphilli/</a> </font></span><span><font color="#888888">303-497-1726 </font></span></div><span><font color="#888888"></font></span><div><div><span><font color="#888888"><br></font></span><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli" target="_blank"></a></font></span></div></div></div></div></div></div></div></div></div></div></div>