[ncl-talk] png without station lines, pdf with??

[Alan Brammer]

Your output png is enormous.  Zoom in and you’ll see the lines. They’re just very thin because they are resolution dependent on the png.
In my experience line thickness is dependent on the output format.  Lines on a pdf are rarely the same thickness as lines on a png.  

You’re plotting to a pretty enormous png so the lines are there but very very thin.  

  mpres at mpGridLineThicknessF = 2.5
  mpres at mpUSStateLineThicknessF = 2.5 
  mpres at mpNationalLineThicknessF =2.5
  mpres at mpGeophysicalLineThicknessF = 2.5

Makes the geographical lines visible with a 7500*7500 resolution png.  I’d question whether it really needs to be that big though. 
If you make the output a more reasonable resolution (wkWidth = 1500--2000) the lines become more noticeable or scale up your line thicknesses appropriately. 



~Alan




> On Feb 20, 2017, at 7:43 AM, Barry Lynn <barry.h.lynn at gmail.com> wrote:
> 
> Hi:
> 
> I appreciate the suggestion.
> 
> I removed the call "frame (wks)," but the map looks the same. When writing png output, the state lines disappear, and the box is hard to see...
> 
> Barry
> 
> On Mon, Feb 20, 2017 at 5:22 AM, Rick Brownrigg <brownrig at ucar.edu <mailto:brownrig at ucar.edu>> wrote:
> Hi Barry,
> 
> I'm not really sure what is going on here, but one thing that stands out is the call to "frame(wks)" at the end of your script. Normally, that is not necessary unless the resources gsnDraw and gsnFrame are set to False (their defaults are True).  As you likely know, its a language idiom to set these two resources to False when wanting to overlay additional graphics on top of a plot, and then after all drawing functions have been called, one performs this little idiom:
> 
>     ....
>     draw(plot) 
>     frame(wks)
> 
> Which draws the plot and all overlays and advances the "frame" (page/next-image/etc).
> 
> Pure speculation on my part, but perhaps the explicit call to frame(wks) when gsnFrame is already True is the issue (it shouldn't be, but...).  Maybe try removing this call?  Or add a call to "draw(mp)" just before the "frame(wks)".  
> 
> Rick
> 
> 
> 
> On Sun, Feb 19, 2017 at 12:07 AM, Barry Lynn <barry.h.lynn at gmail.com <mailto:barry.h.lynn at gmail.com>> wrote:
> Hi:
> 
> When I plot the namelist.wps as a pdf the station lines appear. When I plot it as a png, they disappear.
> 
> Is there a simple fix for this?
> 
> Thanks
> 
> -- 
> Barry H. Lynn, Ph.D
> Senior Lecturer,
> The Institute of the Earth Science, 
> The Hebrew University of Jerusalem, 
> Givat Ram, Jerusalem 91904, Israel 
> Tel: 972 547 231 170
> Fax: (972)-25662581
> 
> C.E.O, Weather It Is, LTD
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> 
> 
> 
> -- 
> Barry H. Lynn, Ph.D
> Senior Lecturer,
> The Institute of the Earth Science, 
> The Hebrew University of Jerusalem, 
> Givat Ram, Jerusalem 91904, Israel 
> Tel: 972 547 231 170
> Fax: (972)-25662581
> 
> C.E.O, Weather It Is, LTD
> Weather and Climate Focus
> http://weather-it-is.com <http://weather-it-is.com/>
> Jerusalem, Israel
> Local: 02 930 9525
> Cell: 054 7 231 170
> Int-IS: x972 2 930 9525
> US 914 432 3108
> _______________________________________________
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