[ncl-talk] gsn_polyline and shading issue
Adam Phillips
asphilli at ucar.edu
Mon Aug 4 15:25:36 MDT 2014
Hi Cathy,
That is strange. I would think the res at mpFillDrawOrder = "Draw" and
pres at tfPolyDrawOrder = "PostDraw" combination would definitely work. I just
tried running things here, and I was able to plot the polylines over the
map fill by swapping gsn_polyline for gsn_add_polyline.
I'm not sure why one would have to do that; perhaps a developer can chime
in here.
Adam
On Mon, Aug 4, 2014 at 3:13 PM, Cathy Smith - NOAA Affiliate <
cathy.smith at noaa.gov> wrote:
> Adam
> I tried that and got the same behavior (lines behind shading)
>
> Cathy
>
>
>
>
>
>
> On Mon, Aug 4, 2014 at 3:08 PM, Adam Phillips <asphilli at ucar.edu> wrote:
>
>> Hi Cathy,
>> Try setting pres at tfPolyDrawOrder = "PostDraw". That resource should
>> control when the polylines are drawn. If that doesn't solve it let everyone
>> know.
>> Adam
>>
>>
>> On Mon, Aug 4, 2014 at 3:01 PM, Cathy Smith - NOAA Affiliate <
>> cathy.smith at noaa.gov> wrote:
>>
>>> 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
>>>>>
>>>>> _______________________________________________
>>>>> ncl-talk mailing list
>>>>> List instructions, subscriber options, unsubscribe:
>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> ---------------------------------------------------
>>> NOAA/ESRL PSD and CIRES CDC303-497-6263http://www.esrl.noaa.gov/psd/people/cathy.smith/
>>>
>>> Emails about data/webpages may get quicker responses from emailing
>>>
>>> esrl.psd.data at noaa.gov
>>>
>>>
>>> _______________________________________________
>>> ncl-talk mailing list
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>>>
>>>
>>
>>
>> --
>> Adam Phillips
>> Associate Scientist, Climate and Global Dynamics Division, NCAR
>> www.cgd.ucar.edu/staff/asphilli/ 303-497-1726
>>
>> <http://www.cgd.ucar.edu/staff/asphilli>
>>
>
>
>
> --
>
> ---------------------------------------------------
> NOAA/ESRL PSD and CIRES CDC303-497-6263http://www.esrl.noaa.gov/psd/people/cathy.smith/
>
> Emails about data/webpages may get quicker responses from emailing
>
> esrl.psd.data at noaa.gov
>
>
--
Adam Phillips
Associate Scientist, Climate and Global Dynamics Division, NCAR
www.cgd.ucar.edu/staff/asphilli/ 303-497-1726
<http://www.cgd.ucar.edu/staff/asphilli>
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