Re: Making certain values a certain color

I have fixed this, along with a similar situation with vcLevelColors
for vectors. John, we're getting the skew code ready to hand over to
you. I'm testing it on a Linux box, and then I'll test it on a couple
of other systems before I give it a heads up.

--Mary

On Tue, 15 Mar 2005, David Ian Brown wrote:

> Hi John,
> Pyngl by default has the resource nglSpreadColors set to True, and
> apparently it overrides your explicit setting of the resource cnFillColors.
> The fix is simply to set nglSpreadColors to False. We should perhaps consider
> having nglSpreadColors take effect only if cnFillColors is not set.
>
> Other than that, I think that your code is working as you intended.
> -dave
> On Mar 15, 2005, at 2:50 PM, Ertl, John wrote:
>
>> All,
>>
>> I thought I had this figured out but now I have no idea what is going on.
>> I
>> bet I need to set something else but I am not sure what.
>>
>> I have an RH field and I want to be able to have certain rh values have a
>> specific color. This is easy if there is always the full range of 0-100%
>> but if the lower values are missing then the scale gets messed up. I have
>> tried to set the max, min and spacing and then using cnFillColors but it
>> looks to be ignoring the colors I have chosen.
>>
>> Below is the code...This particular test was just supposed to alternate two
>> colors...did not work. I get a fill but it looks to be just stating at the
>> bottom of the color table and moving up the table with each layer. The end
>> goal is to be able to highlight certain RH value ranges by using a specific
>> color.
>>
>> Thanks.
>>
>> import Ngl
>> import Numeric
>>
>>
>> rhisobar = Numeric.array( \
>> [ \
>> [ 0, 0, 0, 0, 0, \
>> 0, 0, 0, 0, 0, \
>> 0, 0, 0, 0, 0, \
>> 0, 0, 0, 0, 0, \
>> 0, 0, 0, 0, 0 \
>> ], \
>> [ 20, 20, 20, 20, 20, \
>> 20, 20, 20, 20, 20, \
>> 20, 20, 20, 20, 20, \
>> 20, 20, 20, 20, 20, \
>> 20, 20, 20, 20, 20 \
>> ], \
>> [ 40, 40, 40, 40, 40, \
>> 40, 40, 40, 40, 40, \
>> 40, 40, 40, 40, 40, \
>> 40, 40, 40, 40, 40, \
>> 40, 40, 40, 40, 40 \
>> ], \
>> [ 50, 50, 50, 50, 50, \
>> 50, 50, 50, 50, 50, \
>> 50, 50, 50, 50, 50, \
>> 50, 50, 50, 50, 50, \
>> 50, 50, 50, 50, 50 \
>> ], \
>> [ 60, 60, 60, 60, 60, \
>> 60, 60, 60, 60, 60, \
>> 60, 60, 60, 60, 60, \
>> 60, 60, 60, 60, 60, \
>> 60, 60, 60, 60, 60 \
>> ], \
>> [ 70, 70, 70, 70, 70, \
>> 70, 70, 70, 70, 70, \
>> 70, 70, 70, 70, 70, \
>> 70, 70, 70, 70, 70, \
>> 70, 70, 70, 70, 70 \
>> ], \
>> [ 80, 80, 80, 80, 80, \
>> 80, 80, 80, 80, 80, \
>> 80, 80, 80, 80, 80, \
>> 80, 80, 80, 80, 80, \
>> 80, 80, 80, 80, 80 \
>> ], \
>> [ 90, 90, 90, 90, 90, \
>> 90, 90, 90, 90, 90, \
>> 90, 90, 90, 90, 90, \
>> 90, 90, 90, 90, 90, \
>> 90, 90, 90, 90, 90 \
>> ],
>> ## [ 100, 100, 100, 100, 100, \
>> ## 100, 100, 100, 100, 100, \
>> ## 100, 100,100,100, 100, \
>> ## 100,100, 100, 100, 100, \
>> ## 100,100,100,100,100 \
>> ## ] \
>> ], Numeric.Float0)
>> levels = [ 1000., 975., 950., 925., 850., 700., 500., 400.]
>>
>> taus = Numeric.array([ \
>> 0., 3., 6., 9., 12., \
>> 15., 18., 21., 24., 27., \
>> 30., 33., 36., 39., 42., \
>> 45., 48., 51., 54., 57., \
>> 60., 63., 66., 69., 72. \
>> ],Numeric.Float0)
>>
>>
>> colors = Numeric.array([
>> [255,255,255],[0,0,0],
>> [0,255,255],
>> [255,0,0],
>> [0,255,0],
>> [0,0,255],
>> [220,255,220],
>> [190,255,190],
>> [120,255,120],
>> [80,255,80],
>> [50,200,50],
>> [20,150,20],
>> [0,0,255],
>> [255,0,0],
>> [160,160,160]]) /255.0
>>
>>
>> rlist = Ngl.Resources()
>> rlist.wkColorMap = colors
>> wks = Ngl.open_wks('x11','plotname',rlist)
>>
>> #
>> rh_res = Ngl.Resources()
>>
>> rh_res.trYReverse = True # Reverse the Y values.
>> rh_res.nglDraw = False # Don't draw individual plot.
>> rh_res.nglFrame = False # Don't advance frame.
>> rh_res.vpXF = 0.15 # x location
>> rh_res.vpYF = 0.90 # y location
>> rh_res.vpWidthF = 0.7 # width
>> rh_res.vpHeightF = 0.30 # height
>> rh_res.tmXBLabelJust = "CenterCenter"
>> rh_res.cnInfoLabelOn = False # turn off cn info label. Gives
>> warnings
>> rh_res.sfXArray = taus # Define X/Y axes values. Gives
>> warnings
>> rh_res.sfYArray = levels # all three data fields. Gives warnings
>> rh_res.nglMaximize = False # need to be set otherwise vp stuff is
>> not used
>> rh_res.pmLabelBarDisplayMode = "Never"
>> rh_res.sfMissingValueV = 999.0
>>
>> rh_res.tiYAxisFontHeightF = .009
>> rh_res.tiYAxisString = "Temp(F) RH Wind(kt):C: millibars" # Y
>> axes label.
>> rh_res.tiMainString = "Meteogram for Test Z"
>>
>> rh_res.tmYLMode = "Explicit" # Define own tick mark labels.
>> rh_res.tmYLLabelFont = 25 # Change the font.
>> rh_res.tmYLValues = levels
>> rh_res.tmYLLabels = levels
>> #["1000","975","950","925","850","800","700","600","500", "400"]
>> rh_res.tmYLMinorOn = False # No minor tick marks.
>>
>> rh_res.tmXBMajorOutwardLengthF = .01 # makes bottom tick marks face
>> outward
>> rh_res.tmXBMode = "Explicit" # Define own tick mark labels.
>> rh_res.tmXBLabelFont = 25 # Change the font.
>> rh_res.tmXBValues = taus
>> rh_res.tmXBLabelFontHeightF = .018 # Font size
>> rh_res.tmYLLabelFontHeightF = .014 # Font size
>> rh_res.tmXBLabels = taus #[tauLabel] # insert a list
>> rh_res.tmXBLabelAngleF = 90. # change label angle
>> rh_res.tmXBMinorOn = False # No minor tick marks.
>>
>> rh_res.cnLevelSelectionMode = "ManualLevels"
>> rh_res.cnMinLevelValF = 0.0
>> rh_res.cnMaxLevelValF = 100.0
>> rh_res.cnLevelSpacingF = 10.0
>>
>> rh_res.cnFillColors = [3,4,3,4,3,4,3,4,3,4,3] #should alternate
>> colors doe not work
>>
>> rh_res.cnLineLabelsOn = True # contour labels
>> rh_res.cnFillOn = True # turns on the color
>>
>> rhfill = Ngl.contour(wks,rhisobar,rh_res)
>>
>> Ngl.draw(rhfill)
>> Ngl.frame(wks)
>>
>>
>>
>>
>>
>>
>> John C. Ertl
>> Fleet Numerical Meteorology & Oceanography Center
>> 7 Grace Hopper Ave
>> Monterey, CA 93943
>> phone: (831) 656-5704
>> fax: (831) 656-4363
>>
>> _______________________________________________
>> pyngl-talk mailing list
>> pyngl-talk_at_ucar.edu
>> http://mailman.ucar.edu/mailman/listinfo/pyngl-talk
>
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Received on Wed Mar 16 2005 - 09:08:43 MST