[ncl-talk] gsn_polyline and shading issue

[Cathy Smith - NOAA Affiliate]

I tried res at mpFillDrawOrder  (which I think is what you were referring to;
the other doesn't exist)

I set to PreDraw, Draw and Post Draw and got the same behavior. I did see
some doc here

http://www.ncl.ucar.edu/Applications/draworder.shtml

which is along the lines of what you suggested but didn't seem to work for
the routines I used. I wonder if there is a way to draw the polylines last
instead of the shaded fill first?

Thanks for the suggestion.

Cathy


On Mon, Aug 4, 2014 at 2:43 PM, Kyle Griffin <ksgriffin2 at wisc.edu> wrote:

> I believe the quick fix, assuming nothing else is explicitly ordered, will
> be
>
> res at mpDrawOrder = "PreDraw"
>
> If that doesn't do it, you can poke around with other DrawOrder resources
> to move things into either "PreDraw", "Draw", or "PostDraw" drawing phases.
>
>
> Kyle
>
> ----------------------------------------
> Kyle S. Griffin
> Department of Atmospheric and Oceanic Sciences
> University of Wisconsin - Madison
> Room 1421
> 1225 W Dayton St, Madison, WI 53706
> Email: ksgriffin2 at wisc.edu
>
>
> On Mon, Aug 4, 2014 at 3:28 PM, Cathy Smith (NOAA Affiliate) <
> cathy.smith at noaa.gov> wrote:
>
>> Hi NCLers
>> I'm having trouble getting a polyline to appear OVER a map with
>> continents shaded. I have simplified code below which reproduces the
>> problem.  The code draws a basic map (shading is default) and then a box
>> on the map using gsn_polyline . You can run code and then look at
>> fluffy.ps. The box just shows up where there is no shading. I verified
>> in testing that the lines show up as long as they aren't located where
>> the shading is. How can I control the order of shading so it is done
>> before the polylines?
>>
>> NCL version is 6.2.0 on a 64 bit linux server.
>>
>> Thanks!
>> Cathy Smith
>>
>>
>> ;*;************************************************
>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
>> ;**************************************************
>> begin
>>
>>    psname="fluffy"
>>    wks = gsn_open_wks("ps",psname)               ; open workstation
>>    res            = True                          ; map resources
>>    res at gsnDraw    = False                         ; don't draw
>>    res at gsnFrame   = False                         ; don't advance frame
>>    res_lb         = True                          ; map resources
>>    latmin=41
>>    latmax=52
>>    lonmin=235
>>    lonmax=250
>>    poly_lat1=43
>>    poly_lat2=50
>>    poly_lon1=237
>>    poly_lon2=247
>>    res at mpMaxLatF  = latmax                           ; select subregion
>>    res at mpMinLatF  = latmin
>>    res at mpMinLonF  = lonmin
>>    res at mpMaxLonF  = lonmax
>>    res at mpCenterLonF  = (lonmax+lonmin)/2.
>>
>>    map = gsn_csm_map_ce(wks,res)                         ; create map
>>
>>    pres                  = True                             ; polyline
>> resources
>>    pres at gsLineThicknessF = 2.0                ; line thickness
>>
>>
>> gsn_polyline(wks,map,(/poly_lon1,poly_lon2/),(/poly_lat1,poly_lat1/),pres)
>>
>> gsn_polyline(wks,map,(/poly_lon2,poly_lon2/),(/poly_lat1,poly_lat2/),pres)
>>
>> gsn_polyline(wks,map,(/poly_lon1,poly_lon2/),(/poly_lat2,poly_lat2/),pres)
>>
>> gsn_polyline(wks,map,(/poly_lon1,poly_lon1/),(/poly_lat1,poly_lat2/),pres)
>>
>>    draw(map)
>> ;   frame(wks)
>>
>> end
>>
>> --
>> ----------------------------------------------
>> NOAA/ESRL PSD and CU CIRES
>> 303-497-6263
>> http://www.esrl.noaa.gov/psd/people/cathy.smith/
>>
>> Emails about data/webpages may get quicker responses from emailing
>> esrl.psd.data at noaa.gov
>>
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>
>


-- 

---------------------------------------------------
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303-497-6263http://www.esrl.noaa.gov/psd/people/cathy.smith/

Emails about data/webpages may get quicker responses from emailing

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