[ncl-talk] Error while handling multiple WRF output files
swati shewale
shewaleswati16 at gmail.com
Mon Oct 9 06:55:42 MDT 2017
Dear Mary,
The resources that you set in your demo script like left and right space
for panel (first panel of six plot vertically and another panel of three
plot vertically) as below
;---Define space for leftmost column of plots, and their labelbar width
pres at gsnPanelLeft = 0.
pres at gsnPanelRight = 2./3
pres at pmLabelBarWidthF = 0.6
gsn_panel(wks,(/plot1,plot2,plot3,plot4,plot5,plot6/),(/3,2/),pres)
;---Define space for righmost column of plots, and their labelbar width
delta = 0.028
pres at gsnPanelLeft = pres at gsnPanelRight - delta ; Left plots don't
stretch all the way to
; 2/3, so move right plots a little to left.
pres at gsnPanelRight = 1.0 - delta
pres at pmLabelBarWidthF = pres at pmLabelBarWidthF * 0.5 ; half the width
of other labelbar
gsn_panel(wks,(/plot7,plot8,plot9/),(/3,1/),pres)
If I wish to do plots from top to bottom instead of left to right, along
with both scales vertical (which should have position to the extreme right).
I just did change in your script as follow
;---Set some panel resources common to both sets of plots
pres = True
pres at txFontHeightF = .010
pres at txString = "
WUCM
NOUCM WUCM - NOUCM"
pres at gsnPanelLabelBar = True
pres at gsnMaximize = True
pres at pmLabelBarHeightF = 0.08
pres at lbLabelFontHeightF = 0.01
pres at gsnFrame = False ; Needed for paneling two sets of
plots on same frame.
pres at gsnPanelYWhiteSpacePercent = 4
pres at gsnPanelXWhiteSpacePercent = 4
pres at gsnPanelBoxes = True ; debugging tool
;---Define space for leftmost column of plots, and their labelbar width
pres at gsnPanelTop = 0.
pres at gsnPanelBottom = 2./3
pres at pmLabelBarWidthF = 0.6
gsn_panel(wks,(/plot0,plot1,plot2,plot3,plot4,plot5/),(/2,3/),pres)
;---Define space for righmost column of plots, and their labelbar width
delta = 0.005
pres at gsnPanelTop = pres at gsnPanelBottom - delta ; Left plots don't
stretch all the way to
; 2/3, so move right plots a little to left.
pres at gsnPanelBottom = 1.0 - delta
pres at pmLabelBarWidthF = pres at pmLabelBarWidthF * 0.5 ; half the width
of other labelbar
gsn_panel(wks,(/plot6,plot7,plot8/),(/3,1/),pres)
txres = True
txres at txFontHeightF = 0.02
gsn_text_ndc(wks,"Temperature at 2m (degC) over Patna
city",0.5,0.92,txres)
gives me error as
(0) Warning: gsn_panel: attribute gsnPanelTop must be > 0.0 and <= 1.0
(0) Defaulting to 1.
(0) Warning: gsn_panel: font height (0.01) of main string is too large
to fit in space provided. Either decrease font size or set gsnPanelTop.
(0) Warning: gsn_panel: font height (0.02) of main string is too large
to fit in space provided. Either decrease font size or set gsnPanelTop.
(0) Error: gsn_panel: attribute gsnPanelTop (0.661667) must be greater
(0) than gsnPanelBottom (0.995).
Also Please tell me, how should I fix scale vertically that to extreme
right. Actually I want plot from top to bottom because I want to provide
resources at left side (for example purpose attached a plot).
I have model runs two types ....named WUCM and NOUCM
I want it like......first row contain 3 plot (WUCM)
second row contain 3 plot (NOWUCM)
above two rows have same scale
third row contain 3 plot of above difference (WUCM -
NOWUCM)
this one have different scale (as it is difference between WUCM - WUCM)
I hope, I tried better to convey things I want.
On Mon, Oct 9, 2017 at 11:30 AM, swati shewale <shewaleswati16 at gmail.com>
wrote:
> Thanks a lot Mary for giving detail info along with demo script.
> I have mentioned special lat2d/lon2d attributes in gsn script (named
> convention in my a script is lat/lon). Anyway I will go through the script
> and link. Thanks again.
>
> On Sat, Oct 7, 2017 at 12:46 AM, Mary Haley <haley at ucar.edu> wrote:
>
>> Hello,
>>
>> Thanks for providing clean scripts and explanations.
>>
>> 1. This warning is because when you use gsn_csm_contour_map to plot
>> curvilinear data, you must associate the lat/lon arrays with the data being
>> plotted. Otherwise, it does't know where on the map the data is supposed to
>> go.
>>
>> If you looked at the wrf_gsn_1.ncl and wrf_gsn_2.ncl scripts, you'll see
>> they are both using special lat2d/lon2d attributes to accomplish this:
>>
>> hgt = wrf_user_getvar(a,"HGT",it) ; Terrain elevation
>> hgt at lat2d = wrf_user_getvar(a,"XLAT",it) ; latitude/longitude
>> hgt at lon2d = wrf_user_getvar(a,"XLONG",it) ; required for plotting
>>
>> However, you would have to do this for every variable you plot.
>>
>> Instead, you can set these two resources before any calls to
>> gsn_csm_contour_map:
>>
>> res at sfXArray = lon
>> res at sfYArray = lat
>>
>>
>> 2.
>> I think the issue with cnConstFEnableFill
>> is that you are setting that resource *after* plots #0-5 have been
>> created. You need to make sure this line:
>>
>> res at cnConstFEnableFill= True ; allow constant values (1=sig) to fill
>>
>>
>>
>> is *before* all of your gsn_csm_contour_map calls.
>>
>> 3. In order to panel two sets of plots on the same page, you first need
>> to set:
>>
>> pnlres at gsnFrame = False
>>
>> so that the frame doesn't get advanced after each one. You will then need
>> to advance the frame yourself when done:
>>
>> frame(wks)
>>
>> The other issue with paneling two sets of plots, is that you need to make
>> sure they don't get drawn on top of each other. There are many examples on
>> our "Panels <http://www.ncl.ucar.edu/Applications/panel.shtml>" example
>> page that show how to do various configurations of plots and labelbars.
>> Here are some that might help:
>>
>> http://www.ncl.ucar.edu/Applications/panel.shtml#ex12
>> http://www.ncl.ucar.edu/Applications/panel.shtml#ex22
>>
>> The important thing is that you need to set gsnPanelRight / gsnPanelLeft
>> to control which part of the frame each set of plots is drawn in. Since
>> the first set is 3 x 2 plots and the second set is 3 x 1 plots, this means
>> the 3 x 2 plots should take up 2/3 of the width, and the 3 x 1 plots will
>> take up 1/3 of the width.
>>
>> See attached script which uses dummy data.
>>
>> --Mary
>>
>>
>>
>>
>> On Fri, Oct 6, 2017 at 2:04 AM, swati shewale <shewaleswati16 at gmail.com>
>> wrote:
>>
>>> Hello Mary,
>>>
>>> As per your suggestion I went through the links provided by you. I will
>>> explain one by one the issues I came across while doing plot using inbuilt
>>> wrf function as well as gsn function separately. I have attached scripts
>>> along with plot. the kind of titles (as well as left and side string), I
>>> want is reflected in gsn plot which am unable to do in wrf plot. I have
>>> given suitable names to scripts as well as plot for your convenience. Hope
>>> you wont get confuse.
>>>
>>> In first script (1_plot_using_wrf_function)
>>> 1. after mentioning re at cnConstFEnableFill = True, getting warning as
>>> warning:ContourPlotInitialize: scalar field is constant; no contour
>>> lines will appear; use cnConstFEnableFill to enable fill
>>>
>>> actually using wrf in built function gives nice plot but unable to make
>>> self explanatory (giving strings and titles) plot so thought of ploting
>>> using gsn function
>>>
>>> In second script (2_plot_using_gsn_function), issues are
>>>
>>> 1. even after mentioning lat/lon getting warning as follow
>>> (0) check_for_y_lat_coord: Warning: Data either does not contain a
>>> valid latitude coordinate array or doesn't contain one at all.
>>> (0) A valid latitude coordinate array should have a 'units' attribute
>>> equal to one of the following values:
>>> (0) 'degrees_north' 'degrees-north' 'degree_north' 'degrees
>>> north' 'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg
>>> north'
>>> (0) check_for_lon_coord: Warning: Data either does not contain a
>>> valid longitude coordinate array or doesn't contain one at all.
>>> (0) A valid longitude coordinate array should have a 'units'
>>> attribute equal to one of the following values:
>>> (0) 'degrees_east' 'degrees-east' 'degree_east' 'degrees east'
>>> 'degrees_E' 'Degrees_east' 'degree_E' 'degreeE' 'degreesE' 'deg east'
>>>
>>> 2. after mentioning re at cnConstFEnableFill = True, getting warning as
>>> warning:ContourPlotInitialize: scalar field is constant; no contour
>>> lines will appear; use cnConstFEnableFill to enable fill
>>>
>>> 3. I want all 9 plots on single panel with scales vertical, instead I am
>>> getting it on two different pages
>>>
>>> I think, I have to manage or add more resources in pres1/pres2 such as (*vpXF
>>> <https://www.ncl.ucar.edu/Document/Graphics/Resources/vp.shtml#vpXF>*
>>> and *vpYF
>>> <https://www.ncl.ucar.edu/Document/Graphics/Resources/vp.shtml#vpYF>*) (*vpHeightF
>>> <https://www.ncl.ucar.edu/Document/Graphics/Resources/vp.shtml#vpHeightF>*
>>> and *vpWidthF
>>> <https://www.ncl.ucar.edu/Document/Graphics/Resources/vp.shtml#vpWidthF>*)
>>> , so that I may get 9 plots on single panel. If you know any link which
>>> resembles like the plot i want,Please let me know. side by I will again go
>>> through links given by you.
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Sat, Sep 23, 2017 at 9:30 AM, swati shewale <shewaleswati16 at gmail.com
>>> > wrote:
>>>
>>>> Thank you so much Mary....surely I will go through the link provided by
>>>> you....If come across any problem, will let you know
>>>>
>>>> On Sat, Sep 23, 2017 at 12:36 AM, Mary Haley <haley at ucar.edu> wrote:
>>>>
>>>>> Please see this page:
>>>>>
>>>>> http://www.ncl.ucar.edu/Applications/wrfgsn.shtml
>>>>>
>>>>> and look at the first example (wrf_gsn_1.ncl and wrf_nogsn_1.ncl) and
>>>>> the second example (wrf_gsn_2.ncl).
>>>>>
>>>>> These show how to use gsn to plot data and it compares the plot with
>>>>> using WRF functions.
>>>>>
>>>>> In the wrf_gsn_1.ncl plot, you can see that the gsnLeft/RightString
>>>>> resources are being set automatically, because the data has a description
>>>>> and units attribute.
>>>>>
>>>>> Try this script as a start on your own data, and also look at
>>>>> wrf_gsn_2.ncl to see how to further customize your plot.
>>>>>
>>>>> If you are unable to get the plot to look as nice as you want, email
>>>>> ncl-talk at ucar.edu again with your new script and what you want it to
>>>>> look like, and we can help further.
>>>>>
>>>>> Good luck,
>>>>>
>>>>> --Mary
>>>>>
>>>>>
>>>>> On Fri, Sep 22, 2017 at 3:21 AM, swati shewale <
>>>>> shewaleswati16 at gmail.com> wrote:
>>>>>
>>>>>> Thank you Mary... its wrf file, I just renamed it for my convenience.
>>>>>> Actually I am able to plot it using wrf function but unable to put
>>>>>> left/right/centre strings, as those are related to gsn functions. so to
>>>>>> overcome the difficulty of left/right/centre, I thought to make a plot
>>>>>> using gsn functions injstead of wrf functions. but inbuilt wrf functions
>>>>>> gives nicer plots than gsn one.
>>>>>>
>>>>>> On Fri, Sep 22, 2017 at 3:48 AM, Mary Haley <haley at ucar.edu> wrote:
>>>>>>
>>>>>>> It's hard for somebody to simply look at a script to see if it's
>>>>>>> correct or not. I do see some errors, but even if I correct the errors, I
>>>>>>> can't be sure it's 100% correct without having access to your data.
>>>>>>>
>>>>>>> The problems are:
>>>>>>>
>>>>>>> [1]
>>>>>>>
>>>>>>> Your data file is called "patna_data.nc". You are using wrf_xxxx
>>>>>>> functions to plot this data. Since WRF-ARW output files are normally called
>>>>>>> something like "wrfout_d02_2005-08-29_00:00:00", I can't be sure
>>>>>>> that you are actually plotting WRF-ARW data. You can only use wrf_xxx
>>>>>>> plotting functions on WRF-ARW data.
>>>>>>>
>>>>>>> [2]
>>>>>>>
>>>>>>> You have:
>>>>>>>
>>>>>>> t = a->T2(0:7,:,:)
>>>>>>> ter = dim_avg_n( ter1, 0 )
>>>>>>> ter = ter - 273
>>>>>>>
>>>>>>> I don't know what your objective, so I don't know if the above is
>>>>>>> correct. However, you are calling "dim_avg_n" on "ter1" which doesn't
>>>>>>> exist. Did you mean:
>>>>>>>
>>>>>>> ter = dim_avg_n( t, 0 )
>>>>>>>
>>>>>>> The above will take an average of the first 8 times teps of your
>>>>>>> data, assuming that the leftmost dimension of T2 represents time.
>>>>>>>
>>>>>>> Further, you should use the _Wrap version of this function, so
>>>>>>> metadata is maintained:
>>>>>>>
>>>>>>> ter = dim_avg_n_Wrap( t, 0 )
>>>>>>>
>>>>>>> [3]
>>>>>>>
>>>>>>> You have:
>>>>>>>
>>>>>>> ter = ter - 273
>>>>>>>
>>>>>>> Since you are changing the units, you should update the "units"
>>>>>>> attribute to something like this:
>>>>>>>
>>>>>>> ter at units = "degC"
>>>>>>>
>>>>>>>
>>>>>>> The rest of the script looks okay, but again, the wrf_contour and
>>>>>>> wrf_map_overlays procedures will only work if you are actually plotting
>>>>>>> WRF-ARW data.
>>>>>>>
>>>>>>> --Mary
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Sep 7, 2017 at 10:02 PM, swati shewale <
>>>>>>> shewaleswati16 at gmail.com> wrote:
>>>>>>>
>>>>>>>> Thank you. I will try with your script. yesterday I tried it with
>>>>>>>> below script. Please have a look and let me know, whether it is correct or
>>>>>>>> not.
>>>>>>>>
>>>>>>>> On Fri, Sep 8, 2017 at 12:54 AM, Mary Haley <haley at ucar.edu> wrote:
>>>>>>>>
>>>>>>>>> If I understand you correctly, then you need to reshape your X
>>>>>>>>> array so that it is NTIM x 8 x NLAT x NLON, and then you can average across
>>>>>>>>> the second dimension from the left.
>>>>>>>>>
>>>>>>>>> I've attached a modified version of your script, which is
>>>>>>>>> UNTESTED. You may need to modify it to do the right thing with regard to
>>>>>>>>> copying over the required metadata. I did this a little with copy_VarAtts,
>>>>>>>>> and copy_coords.
>>>>>>>>>
>>>>>>>>> --Mary
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Thu, Sep 7, 2017 at 3:42 AM, swati shewale <
>>>>>>>>> shewaleswati16 at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Hiii,
>>>>>>>>>> using ncrcat I have single file containing 24 time step (3hrly, 3
>>>>>>>>>> days). Now I want to plot temperature variable (average for each day,
>>>>>>>>>> spatial, panel plot). I am unable to take out time step for 1st day (0:7)
>>>>>>>>>> and then do average of it...then second day (8:15) ...likewise for third
>>>>>>>>>> day (16:23). I wrote a script, in that it takes average over all time
>>>>>>>>>> steps. what changes should I make so that I can get average over specific
>>>>>>>>>> time step? attached herewith script.
>>>>>>>>>> summary of variable temperature is as follow.
>>>>>>>>>>
>>>>>>>>>> Variable: X
>>>>>>>>>> Type: float
>>>>>>>>>> Total Size: 5658552 bytes
>>>>>>>>>> 1414638 values
>>>>>>>>>> Number of Dimensions: 3
>>>>>>>>>> Dimensions and sizes: [Time | 23] x [south_north | 201] x
>>>>>>>>>> [west_east | 306]
>>>>>>>>>> Coordinates:
>>>>>>>>>> Number Of Attributes: 6
>>>>>>>>>> FieldType : 104
>>>>>>>>>> MemoryOrder : XY
>>>>>>>>>> description : TEMP at 2 M
>>>>>>>>>> units : K
>>>>>>>>>> stagger :
>>>>>>>>>> coordinates : XLONG XLAT XTIME
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Thu, Sep 7, 2017 at 3:04 PM, swati shewale <
>>>>>>>>>> shewaleswati16 at gmail.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Thank you. I will try with it.
>>>>>>>>>>>
>>>>>>>>>>> On Wed, Sep 6, 2017 at 8:39 PM, Mary Haley <haley at ucar.edu>
>>>>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> The error message is telling you that there's something wrong
>>>>>>>>>>>> with argument 0 passed to wrf_contour. Argument 0 refers to the first
>>>>>>>>>>>> argument in the list, which is "a(itime)" in this case.
>>>>>>>>>>>>
>>>>>>>>>>>> The issue is that when you use addfiles to open a series of
>>>>>>>>>>>> files, you need to use square brackets, [], to access a single file, and
>>>>>>>>>>>> not curved brackets, (). This is because addfiles returns a "List" object,
>>>>>>>>>>>> and lists in NCL need to be access with square brackets.
>>>>>>>>>>>>
>>>>>>>>>>>> You have:
>>>>>>>>>>>>
>>>>>>>>>>>> contour = wrf_contour(a(itime),wks,t,t_res)
>>>>>>>>>>>>
>>>>>>>>>>>> and this should be:
>>>>>>>>>>>>
>>>>>>>>>>>> contour = wrf_contour(a[itime],wks,t,t_res)
>>>>>>>>>>>>
>>>>>>>>>>>> --Mary
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> On Mon, Sep 4, 2017 at 4:40 AM, swati shewale <
>>>>>>>>>>>> shewaleswati16 at gmail.com> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hiiii
>>>>>>>>>>>>>
>>>>>>>>>>>>> I want to do panel plotting using WRF output. I have total 8
>>>>>>>>>>>>> files, each contains single time step (one day, 3 hrly datafiles so total 8
>>>>>>>>>>>>> files). out of eight times I want to plot 6 time step (panel plot) for
>>>>>>>>>>>>> variable slp and temperature.
>>>>>>>>>>>>>
>>>>>>>>>>>>> It shows below error.
>>>>>>>>>>>>>
>>>>>>>>>>>>> fatal:Argument type mismatch on argument (0) of (wrf_contour)
>>>>>>>>>>>>> can not coerce
>>>>>>>>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near
>>>>>>>>>>>>> line 44 in file temp.ncl
>>>>>>>>>>>>> (0) Error: gsn_panel: all of the plots passed to gsn_panel
>>>>>>>>>>>>> appear to be invalid
>>>>>>>>>>>>>
>>>>>>>>>>>>> Attached herewith script.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Thank you in advance. Any help will be appreciated
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>> ncl-talk mailing list
>>>>>>>>>>>>> ncl-talk at ucar.edu
>>>>>>>>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>>>>>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20171009/03eda956/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sample_3*3_panel.pdf
Type: application/pdf
Size: 608105 bytes
Desc: not available
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20171009/03eda956/attachment-0001.pdf>
More information about the ncl-talk
mailing list