[ncl-talk] error in scatter xy3 plot/ regression line

[Amal Inge]

Thanks Adam, but please have a look at this bar charts plot i did it with
the script attached and it works with:
 res at gsnXYBarChartColors = "blue"
 plots1 = gsn_csm_xy(wks, x, y_a1, res)
 res at gsnXYBarChartColors = "gold"
 plots2 = gsn_csm_xy(wks, x+0.15, y_b1, res)
 res at gsnXYBarChartColors = "green"
 plots3 = gsn_csm_xy(wks, x+0.30, y_c1, res)
 I want to do the same in a scatter plot and to add 2 other y axis.
I could not recognize my mistake!
 dox_AllGSAs_2014landing.eps
<https://drive.google.com/file/d/1hD9GiUCEqvOsbj7O3a4AxyzkfRK2wx22/view?usp=drive_web>


Le jeu. 17 janv. 2019 à 23:35, Adam Phillips <asphilli at ucar.edu> a écrit :

> Hi Amal,
> Looking at your script, line 66 is this:
> plots1 = gsn_csm_xy(wks,x,y_a1,res)
> So NCL is failing on the plot call. Looking at how you are setting x and
> y_a1:
>  y_a1 = dim_avg_n_Wrap(dox_ave_a1,(/1,2/))
> x = (/1/)
>
> NCL returned a list of error messages to you, but the most important one
> is the first one:
> fatal:CheckArray:Each vector in the caXArray array must have at least 2
> elements
>
> Your x array has one element. Assyming y_a1 is a 1D array containing
> values at each timestep, your input array "x" should contain the times that
> you want to plot the timeseries against. A typical example of using
> gsn_csm_xy on an annual timeseries that runs from 1900-2017:
> plot = gsn_csm_xy(wks,ispan(1900,2017,1),tseries,res)
>
> Hope that helps. If you have any further questions please let the ncl-talk
> email list know.
> Adam
>
>
>
>
>
>
>
>
> On Thu, Jan 17, 2019 at 8:03 AM Amal Inge <amalingenieur89 at gmail.com>
> wrote:
>
>> sorry, this is the error:
>> fatal:CheckArray:Each vector in the caXArray array must have at least 2
>> elements
>> fatal:CoordArraysInitialize:caXArray resource is invalid
>> fatal:Unable to initialize layer-Can't Create
>> fatal:Unable to access object with id:-4
>> fatal:PID #-4 can't be found in NhlSetValues
>> fatal:Unable to access object with id:-4
>> warning:Unable to add DataItem "(null)" to DataList "xyCoordData"
>> fatal:CompileDataList:DataList has no valid members
>> fatal:Unable to access object with id:-4
>> warning:Unable to add DataItem "(null)" to DataList "xyCoordData"
>> fatal:CompileDataList:DataList has no valid members
>> fatal:Argument type mismatch on argument (0) of (attsetvalues_check) can
>> not coerce
>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 12478 in
>> file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl
>>
>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 5083 in
>> file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl
>>
>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 66 in
>> file dox-landing-xy.ncl
>>
>>
>> Le jeu. 17 janv. 2019 à 13:37, Amal Inge <amalingenieur89 at gmail.com> a
>> écrit :
>>
>>> Dear NCL experts,
>>>
>>> I tried this script attached to make a scatter plot with 3 y axis, then
>>> I had this error and i did not find my mistake.
>>> Could you help me please.
>>> I checked the script scatter_4.ncl to make a 2 regresseion line (one
>>> between all dox data and y2 and the second with y3) but i did not
>>> understand how to deal with this, it would be nice if you can tell me how.
>>> exemple of variable:
>>> Variable: y_a1
>>> Type: float
>>> Total Size: 4 bytes
>>>             1 values
>>> Number of Dimensions: 1
>>> Dimensions and sizes: [time | 1]
>>> Coordinates:
>>>             time: [1402876800..1402876800]
>>> Number Of Attributes: 7
>>>   _FillValue : 1e+20
>>>   standard_name :
>>> mole_concentration_of_dissolved_molecular_oxygen_in_sea_water
>>>   long_name : Mole concentration of Dissolved Molecular Oxygen in sea
>>> water
>>>   units : millimol m-3
>>>   _ChunkSizes : ( 1, 22, 84, 161 )
>>>   average_op_ncl : dim_avg_n over dimension(s): lat,lon
>>>   missing_value : 1e+20
>>>
>>> many thanks
>>> best regards
>>> amal
>>>
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>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>
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