<div dir="ltr">Hi Lesley,<div><br></div><div>I think you've switched your reference vector settings around. You should be either making vcRefMagnitudeF *smaller* or making vcRefLengthF *larger*. These act in concert to control the size of the vectors in your plot. Each actually controls the magnitude and length of the vector in the reference vector box in the bottom right of your attached image. You'll note that in this current setting, you would need a wind speed of 2,000,000,000 m/s to have a vector plotted at that size. In reality, you might want to set vcRefMagnitudeF to a value somewhere between 10.0 and 50.0. If this still doesn't make your vectors large enough, reduce the vcRefMagnitudeF to 1.0 and I'm sure you'll see some EP flux arrows appear. You can always check the max() and min() of your vector field if you aren't sure the actual magnitudes you are dealing with.</div><div><br></div><div>Let us know if you have any more questions.</div><div><br></div><div><br></div><div>Kyle</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr">----------------------------------------<div>Kyle S. Griffin</div><div>Department of Atmospheric and Oceanic Sciences</div><div>University of Wisconsin - Madison</div><div>Room 1421</div><div>1225 W Dayton St, Madison, WI 53706</div><div>Email: <a href="mailto:ksgriffin2@wisc.edu" target="_blank">ksgriffin2@wisc.edu</a></div></div></div></div>
<br><div class="gmail_quote">On Fri, Apr 24, 2015 at 4:20 PM, Lesley Smith - NOAA Affiliate <span dir="ltr"><<a href="mailto:lesley.l.smith@noaa.gov" target="_blank">lesley.l.smith@noaa.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi gang,<div>I'm using <span style="font-family:Menlo;font-size:11px">gsn_csm_pres_hgt_vector to make a plot.</span></div><div><span style="font-family:Menlo;font-size:11px">In the past it has worked great for me.</span></div><div><span style="font-family:Menlo;font-size:11px"><br></span></div><div><span style="font-family:Menlo;font-size:11px">This time, I can't seem to make my arrows big enough to see </span></div><div><span style="font-family:Menlo;font-size:11px">anything. I attach a plot of contoured EP Divergence with the</span></div><div><span style="font-family:Menlo;font-size:11px">corresponding 2 EP components in vector form overlaid. The components are many orders of magnitude greater than the divergence. </span></div><div><span style="font-family:Menlo;font-size:11px">I've tried changing </span><span style="font-family:Menlo;font-size:11px">vcRefMagnitudeF and </span><span style="font-family:Menlo;font-size:11px">vcRefMagnitudeF to</span></div><div><span style="font-family:Menlo;font-size:11px">a variety of values and the arrows look the same. </span></div><div><span style="font-family:Menlo;font-size:11px">I tried scaling the vertical component (like one of the examples on the NCL website) to no effect.</span></div><div><span style="font-family:Menlo;font-size:11px"><br></span></div><div><span style="font-family:Menlo;font-size:11px">Eventually when I make </span><span style="font-family:Menlo;font-size:11px">vcRefMagnitudeF too small it suddenly gives the error:</span></div><div><p style="margin:0px;font-size:11px;font-family:Menlo">fatal:VectorPlotDraw: VVECTR - VECTOR NDC LENGTH TOO GREAT</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">fatal:VectorPlotDraw: error drawing vectors</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">fatal:VectorPlotDraw: draw error</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">fatal:PlotManagerDraw: error in plot draw</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">fatal:_NhlPlotManagerDraw: Draw error</p><p style="margin:0px;font-size:11px;font-family:Menlo"><br></p><p style="margin:0px;font-size:11px;font-family:Menlo"><br></p><p style="margin:0px;font-size:11px;font-family:Menlo">I'd love any suggestions!</p><p style="margin:0px;font-size:11px;font-family:Menlo">Thanks!</p><span class="HOEnZb"><font color="#888888"><p style="margin:0px;font-size:11px;font-family:Menlo">-Lesley</p></font></span></div></div>
<br>_______________________________________________<br>
ncl-talk mailing list<br>
List instructions, subscriber options, unsubscribe:<br>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a><br>
<br></blockquote></div><br></div>