[ncl-talk] I can't manage to create a plot with multiple lines on it, each line having different x and y values. Attribute assignment type issue.
Mary Haley
haley at ucar.edu
Fri Apr 15 12:08:14 MDT 2016
You need to use "xyLineColors" and not "xyLineColor", if you have multiple
curves.
This applies for other similar resources too:
xyDashPattern --> xyDashPatterns
xyLineThicknessF --> xyLineThicknesses
On Fri, Apr 15, 2016 at 4:31 AM, Maxime Colin <m.colin at unsw.edu.au> wrote:
> Hi all,
>
>
> Thanks to Rick Brownrigg for his help. That was really helpful!
>
>
> Using the 2 following methods seem to work well:
>
> - either both "delete(res)" and "delete(wks)" before each plot
>
> - or a new "res" (like "res3" for a 3rd plot) and a new "wks" (like "wks3"
> for a 3rd plot) for each plot
>
> I do get a figure with the things I want in it.
>
>
> The only things remaining are the colours (to match with the legend of
> course)! I get 3 lines in "cyan", and 3 legend items in "cyan", while I do
> ask for several colours: e.g. res3 at xyLineColor =
> (/"cyan","blue","green"/). Do you have an idea on how to sort that out?
>
>
> I attach a figure of what I get, so that you can visualise the small issue
> left.
>
>
> Thank you,
>
>
> Maxime
>
>
>
> ------------------------------
> *From:* Rick Brownrigg <brownrig at ucar.edu>
> *Sent:* Friday, 1 April 2016 4:33 AM
> *To:* Maxime Colin
> *Subject:* Re: [ncl-talk] I can't manage to create a plot with multiple
> lines on it, each line having different x and y values. Attribute
> assignment type issue.
>
> Just to follow up, I had meant to attach an example of what I was talking
> about in point i):
>
>
>
> ncl 0> opt = True
> ncl 1> res = opt
> ncl 2> res at foo = 1
> ncl 3> res at bar = 2
> ncl 4> print(res)
>
>
> Variable: res
> Type: logical
> Total Size: 4 bytes
> 1 values
> Number of Dimensions: 1
> Dimensions and sizes: [1]
> Coordinates:
> Number Of Attributes: 2
> bar : 2
> foo : 1
> (0) True
> ncl 5> res = opt
> ncl 6> print(res)
>
>
> Variable: res
> Type: logical
> Total Size: 4 bytes
> 1 values
> Number of Dimensions: 1
> Dimensions and sizes: [1]
> Coordinates:
> Number Of Attributes: 2
> bar : 2 <<<<< NOTE these values are retained from previous settings
> foo : 1
> (0) True
>
>
> On Thu, Mar 31, 2016 at 11:27 AM, Rick Brownrigg <brownrig at ucar.edu>
> wrote:
>
>> Hi Maxine,
>>
>> A couple of comments:
>>
>> i) for each plot, you first set "opt = True", then either "res = opt" or
>> "res2 = opt", and then assign a bunch of resources for the plot. But after
>> the first plot., performing "res = opt" doesn't affect the values or
>> presence of resources associated with "res" from the previous plots. So
>> for example, in one plot, you've set "res at xyLineThickness = 8", a scalar
>> integer value. In a subsequent plot, where the error message arises, you
>> set "res at xyLineThickness = (/ ..... /), an array of floats, and as you
>> likely know NCL won't allow reassignment of incompatible types.
>>
>> The solution would be to "delete(res)" for each plot.
>>
>> ii) In a similar vein, you are re-opening the workstation for each plot
>> and assigning it to "wks". I'm not totally certain what the behavior is
>> there, and whether the previous plots get written and closed out properly.
>> As odd as it seems, performing "delete(wks)" will close the
>> plot/workstation. Alternatively, if the workstation is the same for each
>> plot, its not necessary to reopen a new instance for each plot -- just open
>> once at the top, and it will get closed properly when the script terminates.
>>
>> Hope that helps...
>> Rick
>>
>>
>> On Thu, Mar 31, 2016 at 10:57 AM, Maxime Colin <m.colin at unsw.edu.au>
>> wrote:
>>
>>>
>>>
>>> Dear NCL gurus,
>>>
>>>
>>> I've used NCL for more than a year, but this problem seems to be
>>> particularly tough to solve, so I think I need to refer to you.
>>>
>>>
>>> I've been working on a script for days, I've turned it in different ways
>>> (array of data, overlay, using a single y-axis, etc...), but I can't seem
>>> to find the solution. I had a script to plot several lines on the same
>>> graph, but these lines had exactly the same x-axis. That was working fine.
>>> Now I'm trying to plot several profiles, that all have different x and y
>>> values, but I always receive the following error (after a bunch of warnings
>>> due to the fact that I'm plotting several types of plots with the same
>>> script):
>>>
>>>
>>> warning:MainTitle is not a valid resource in
>>> plot_theta_hor_ave_fct_time_and_z_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_contour
>>> at this time
>>> warning:MainTitle is not a valid resource in
>>> plot_temp_hor_ave_fct_time_and_z_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_contour
>>> at this time
>>> warning:MainTitle is not a valid resource in
>>> plot_eth_hor_ave_fct_time_and_z_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_contour
>>> at this time
>>> warning:cnFillOn is not a valid resource in
>>> plot_T500_hor_ave_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_xy at this time
>>> warning:gsnSpreadColors is not a valid resource in
>>> plot_T500_hor_ave_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_xy at this time
>>> warning:cnLineLabelsOn is not a valid resource in
>>> plot_T500_hor_ave_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_xy at this time
>>> warning:cnLevelSelectionMode is not a valid resource in
>>> plot_T500_hor_ave_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_xy at this time
>>> warning:MainTitle is not a valid resource in
>>> plot_T500_hor_ave_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1_xy at this time
>>>
>>>
>>> fatal:["NclAtt.c":262]:Attribute assignment type mismatch.
>>>
>>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 589 in
>>> file plot_temperature.ncl
>>>
>>>
>>>
>>> I attach the whole script if needed (plot_temperature.ncl), but here is
>>> the relevant part (the error I receive refering to line
>>> res at xyLineThicknesses = (/8.0,8.0,8.0/) ):
>>>
>>>
>>> "
>>>
>>> ; PLOT NUMBER 11
>>> ; type at wkPaperSize = "A4"
>>> wks =
>>> gsn_open_wks(type,"plot_prof_theta_ALL_0130_3D_No_strong_nudg_CONTROL_ALL90d_v1")
>>> ; Create a plot workstation + TITLE OF THE FILE TO SAVE
>>> opts = True
>>> res = opts
>>> res at lbOrientation = "Vertical"
>>> res at gsnMaximize = True
>>> res at tmXTOn = False
>>>
>>> res at pmLegendDisplayMode = "Always"
>>> res at pmLegendSide = "Top"
>>> res at pmLegendOrthogonalPosF = -0.58 ;-0.02 (too high), 0.15 the same,
>>> -0.15 half box is too high
>>> res at pmLegendParallelPosF = .67 ; 0.2 is very good
>>> res at pmLegendWidthF = 0.0375
>>> res at pmLegendHeightF = 0.28
>>> res at lgLabelFontHeightF = 0.02
>>> res at xyExplicitLegendLabels = (/legend_theta(0), legend_theta(1),
>>> legend_theta(2)/)
>>>
>>> res at xyLineThicknesses = (/8.0,8.0,8.0/)
>>> res at xyLineColor = (/"cyan","blue","green"/)
>>> res at xyDashPatterns = (/0,0,0/)
>>> res at trXMinF = 200.
>>> res at trXMaxF = 800.
>>> res at trYMinF = 0.
>>> res at trYMaxF = 30. ;30000
>>> res at tiXAxisString = "Pot. temp (K)"
>>> res at tiYAxisString = "z (km)"
>>> res at tiMainString = "Pot. Temp. profiles"
>>>
>>> plot = gsn_csm_xy(wks,array_of_theta_prof,array_of_heights,res)
>>>
>>> "
>>>
>>>
>>> The netcdf files I'm using are just standard WRF output from an
>>> idealized quarter_ss type simulation. They are big files (~30GB) so I'd
>>> rather not add them now. If necessary, I'll put a few of them online.
>>>
>>>
>>> NOTE: If you wish to try the script on a smaller number of wrfout files,
>>> just change the num_day_max variable to a small number (I receive the same
>>> error in any case). If you don't use 90 files (as the target is), then some
>>> of the profiles in array_of_heights and array_of_theta_prof may be
>>> undefined. But I have checked that this is not the reason for my issue, as
>>> I get the same errors when running on the full 90 files. To avoid this
>>> slight issue, you may run the cleaned version: plot_temperature_cleaned.ncl
>>>
>>>
>>> For information, I'm using NCL v6.3.0.
>>>
>>> And "uname -a" returns: Linux monsoon.ccrc.unsw.edu.au
>>> 2.6.32-573.8.1.el6.x86_64 #1 SMP Tue Nov 10 18:01:38 UTC 2015 x86_64 x86_64
>>> x86_64 GNU/Linux
>>>
>>>
>>> Thank you very much for your assistance.
>>>
>>>
>>> Maxime.
>>>
>>> _______________________________________________
>>> ncl-talk mailing list
>>> ncl-talk at ucar.edu
>>> List instructions, subscriber options, unsubscribe:
>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>
>>>
>>
>
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