<div dir="ltr"><div><div><div><div>Hi Wei,<br></div>Try adding:<br></div>res@mpFillDrawOrder = "PreDraw<strong>"</strong><span style="font-weight:normal"><strong><br></strong></span></div><span style="font-weight:normal">and let ncl-talk know if that doesn't work.<br></span></div><span style="font-weight:normal">Adam<strong><br></strong></span></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 15, 2015 at 11:00 AM, Wei Huang <span dir="ltr"><<a href="mailto:whuang@univ-wea.com" target="_blank">whuang@univ-wea.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dave,<br>
<br>
With your suggestion, everything worked out, until we want a filled map.<br>
<br>
I am working like these<br>
<br>
;define the resource:<br>
<br>
res = True<br>
res@gsnMaximize = True<br>
<br>
res@gsnDraw = False<br>
res@gsnFrame = False<br>
<br>
;define the work station<br>
wks = gsn_open_wks("x11", out_flnm)<br>
<br>
;the map<br>
map_projection = "Mercator"<br>
<br>
;Set some map resources.<br>
res@mpProjection = map_projection ; choose projection<br>
<br>
res@mpLimitMode = "LatLon"<br>
res@mpMinLatF = -85.0<br>
res@mpMaxLatF = 85.0<br>
res@mpMinLonF = -180.0<br>
res@mpMaxLonF = 180.0<br>
<br>
res@mpOutlineBoundarySets = "National"<br>
res@mpNationalLineColor = 1<br>
res@mpGridAndLimbOn = True<br>
<br>
res@mpLandFillColor = "Wheat3" ; was "GoldenRod1" or "Tan"<br>
res@mpOceanFillColor = "SlateGray2" ; was "LightBlue1"<br>
res@mpInlandWaterFillColor = "SlateGray2" ; was "LightBlue1" ; was "PaleTurquoise3"<br>
<br>
Then I draw front as:<br>
;print("xlat = " + xlat + ", xlon = " + xlon)<br>
wmdrft(wks, xlat, xlon) ; Draw front.<br>
(and quite few of them)<br>
<br>
And later:<br>
<br>
pline = gsn_add_polyline(wks, plot, xlon, xlat, p_res)<br>
(and may other similar)<br>
<br>
and finally:<br>
<br>
draw(map)<br>
frame(wks)<br>
<br>
<br>
Now the front was draw first (without map), and then others draw on map,<br>
And covered the fronts draw on the wks before.<br>
<br>
How can adjust the order to make the front draw last on top of the map?<br>
<br>
Thanks,<br>
<br>
Wei Huang<br>
<br>
<br>
-----Original Message-----<br>
From: David Brown [mailto:<a href="mailto:dbrown@ucar.edu">dbrown@ucar.edu</a>]<br>
Sent: Tuesday, July 14, 2015 1:54 PM<br>
To: Wei Huang<br>
Cc: Adam Phillips; <a href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a><br>
Subject: Re: [ncl-talk] Add polyline, polygon, and polytext to a map generates two PNG files.<br>
<br>
Wei,<br>
You should use a different set of resources for the poly functions from the ones you use for the gsn_csm_map call.<br>
-dave<br>
<br>
On Tue, Jul 14, 2015 at 12:18 PM, Wei Huang <<a href="mailto:whuang@univ-wea.com">whuang@univ-wea.com</a>> wrote:<br>
> Adam,<br>
><br>
><br>
><br>
> I used gsn_add_* suite for the polylines, polygons, polytexts.<br>
><br>
><br>
><br>
> If I set:<br>
><br>
> res = True<br>
><br>
> res@gsnDraw = False<br>
><br>
> res@gsnFrame = False<br>
><br>
><br>
><br>
> It can turn off (eliminate) the blank map, but later, there are a<br>
> whole bunch of warning msgs,<br>
><br>
><br>
><br>
> warning:gsnDraw/gsnFrame is not a valid resource in graphic_style at<br>
> this time.<br>
><br>
><br>
><br>
> This make it hard to read other msgs.<br>
><br>
><br>
><br>
> Thanks,<br>
><br>
><br>
><br>
> Wei Huang<br>
><br>
><br>
><br>
> From: Adam Phillips [mailto:<a href="mailto:asphilli@ucar.edu">asphilli@ucar.edu</a>]<br>
> Sent: Tuesday, July 14, 2015 1:07 PM<br>
> To: Wei Huang<br>
> Cc: <a href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a><br>
> Subject: Re: [ncl-talk] Add polyline, polygon, and polytext to a map<br>
> generates two PNG files.<br>
><br>
><br>
><br>
> Hi Wei,<br>
><br>
> It depends on what functions/procedures you are using to draw your<br>
> polylines/markers/text.. In all cases you should set gsnFrame = False<br>
> in your res resource list.<br>
><br>
> I prefer the gsn_add_* suite of functions to do what you are doing as<br>
> it allows paneling. For those functions you also need to add gsnDraw =<br>
> False to your res resource list.<br>
><br>
> If you are just using gsn_text/gsn_polygon/gsn_polygon you can get<br>
> away with not setting gsnDraw as is shown in polygon example #8 here:<br>
> <a href="https://www.ncl.ucar.edu/Applications/Scripts/polyg_8.ncl" rel="noreferrer" target="_blank">https://www.ncl.ucar.edu/Applications/Scripts/polyg_8.ncl</a><br>
><br>
><br>
><br>
> Hope that helps!<br>
><br>
> Adam<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> On Tue, Jul 14, 2015 at 10:05 AM, Wei Huang <<a href="mailto:whuang@univ-wea.com">whuang@univ-wea.com</a>> wrote:<br>
><br>
> I am trying to add polyline, polygon, and polytext to a map, steps as below:<br>
><br>
> res = ...<br>
> wks = ...<br>
> map = gsn_csm_map(wks, res)<br>
><br>
> ;add lots of polylines, polygons, and polytexts to map<br>
><br>
> draw(map)<br>
> frame(wks)<br>
><br>
> It generates two PNG files. With the first just a map.<br>
><br>
> How can I remove the first blank map?<br>
><br>
> Thanks,<br>
><br>
> Wei Huang<br>
> <a href="mailto:whuang@univ-wea.com">whuang@univ-wea.com</a><br>
><br>
><br>
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><br>
><br>
><br>
><br>
> --<br>
><br>
> Adam Phillips<br>
><br>
> Associate Scientist, Climate and Global Dynamics Laboratory, NCAR<br>
><br>
> <a href="http://www.cgd.ucar.edu/staff/asphilli/" rel="noreferrer" target="_blank">www.cgd.ucar.edu/staff/asphilli/</a> <a href="tel:303-497-1726" value="+13034971726">303-497-1726</a><br>
><br>
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><br>
><br>
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><br>
</blockquote></div><br><br clear="all"><br>-- <br><div 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>
</div>