[ncl-talk] Contour Plot Help

Wed Sep 16 10:15:31 MDT 2015

My PI (Private Investigator) only wants to see values of a certain range.
He doesnt want to see values less than 300. So Would setting fillValue to
say 300 help in any way? I will also look at the documentation on this
FillValue function.

On Wed, Sep 16, 2015 at 12:09 PM, Adam Phillips <asphilli at ucar.edu> wrote:

> Yes I believe it does. From your output I see that you do not have a
> _FillValue attribute set. Are you supposed to have values less than -1e5? I
> am guessing that your _FillValue should be set to  -9.99999e11 based on the
> minimum value. So set this:
> var at _FillValue = -9.99999e11
>
> and resend the output from stat_dispersion. I am guessing this will solve
> your issue..
> Adam
>
>
> On Wed, Sep 16, 2015 at 9:59 AM, Mariama Barr - Dallas <bama4 at umbc.edu>
> wrote:
>
>> My mistake, I see now that the data ranges significantly more, does this
>> affect the contour even though I set a min and max for contouring?
>>
>> On Wed, Sep 16, 2015 at 11:57 AM, Mariama Barr - Dallas <bama4 at umbc.edu>
>> wrote:
>>
>>> I have a software feature that displays all data values that I used
>>> before, but for specifics, here is the printout:
>>>
>>>
>>> 
>>>
>>> On Wed, Sep 16, 2015 at 11:47 AM, Dennis Shea <shea at ucar.edu> wrote:
>>>
>>>> To my knowledge, you have not done what I requested. Right before you
>>>> use the plot function
>>>>
>>>>    printVarSummary(var)
>>>>    printMinMax(var,0)
>>>>
>>>> The output has not been sent to ncl-talk
>>>> ---
>>>>
>>>>
>>>> I'll also add that the following might help. Add this before the plot
>>>> function
>>>>
>>>>
>>>> https://www.ncl.ucar.edu/Document/Functions/Contributed/stat_dispersion.shtml
>>>>
>>>>
>>>> ==
>>>>
>>>>   opt = True
>>>>   opt at PrintStat = True
>>>>   statb = *stat_dispersion*(var, opt )
>>>>
>>>>     printVarSummary(var)
>>>>     printMinMax(var,0)
>>>>
>>>>   plot = gsn_csm_contour_map(wks, var, res)
>>>>
>>>> ===
>>>>
>>>>
>>>> Also, as an experiment, you might try a run with
>>>>
>>>>
>>>> *res at cnFillMode <https://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnFillMode>* = "RasterFill"
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Wed, Sep 16, 2015 at 8:37 AM, Mariama Barr - Dallas <bama4 at umbc.edu>
>>>> wrote:
>>>>
>>>>> Well I have contour levels set at a min of 375 and a max of 425 and
>>>>> the spacing is 10.0 and it still gives an algorithm failure error. I will
>>>>> try and increase the spacing to see if it works but I really want as small
>>>>> spacing as possible so that I can see smaller variations of the data in the
>>>>> map.
>>>>>
>>>>> On Wed, Sep 16, 2015 at 10:32 AM, Rick Brownrigg <brownrig at ucar.edu>
>>>>> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> There would be a practical limit based upon your machine. Did you try
>>>>>> intermediate values between 100M and 10G?  How about Adam's suggestion of
>>>>>> explicitly setting contour levels -- trying something fairly coarse and
>>>>>> then dialing it back in until things fail.  There's obviously something
>>>>>> about the data that's requiring extreme amounts of workspace memory -- but
>>>>>> its hard to say what without some sleuthing...
>>>>>>
>>>>>> Rick
>>>>>>
>>>>>>
>>>>>> On Wed, Sep 16, 2015 at 8:17 AM, Mariama Barr - Dallas <
>>>>>> bama4 at umbc.edu> wrote:
>>>>>>
>>>>>>> Yes, I also tried adjusting the space allocated in the .hluresfile
>>>>>>> file from  100000000 to 10000000000. It gives an algorithm error. any
>>>>>>> extreme allocatons gives a segmentation dump so I assume that there is a
>>>>>>> reasonable limit to the amount that can be allocated to the ncarg graphics?
>>>>>>>
>>>>>>> On Tue, Sep 15, 2015 at 7:22 PM, Mary Haley <haley at ucar.edu> wrote:
>>>>>>>
>>>>>>>> Adam's suggestions were good ones.  If you are trying to plot the
>>>>>>>> entire globe, then try cutting back back on the number of contour levels
>>>>>>>> too, if you are explicitly setting them.
>>>>>>>>
>>>>>>>> --Mary
>>>>>>>>
>>>>>>>>
>>>>>>>> On Mon, Sep 14, 2015 at 12:47 PM, Mariama Barr - Dallas <
>>>>>>>> bama4 at umbc.edu> wrote:
>>>>>>>>
>>>>>>>>> I am using NCL version 6.2.1. I commented those out because I was
>>>>>>>>> using them previously to zoom in on a certain longitude and latitude but
>>>>>>>>> right now I want to display the entire globe.
>>>>>>>>>
>>>>>>>>> On Mon, Sep 14, 2015 at 1:44 PM, Dennis Shea <shea at ucar.edu>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Before the plot = ..
>>>>>>>>>>
>>>>>>>>>>    printVarSummary(var)
>>>>>>>>>>    printMinMax(var,0)
>>>>>>>>>>
>>>>>>>>>> Why did you comment out the mpMinLatF, etc resources?
>>>>>>>>>>
>>>>>>>>>> Please always include this information when sending questions to
>>>>>>>>>> ncl-talk.
>>>>>>>>>>
>>>>>>>>>> Also ... the version of NCL you are using.
>>>>>>>>>>
>>>>>>>>>> ncl -V
>>>>>>>>>>
>>>>>>>>>> ==========
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Mon, Sep 14, 2015 at 9:15 AM, Adam Phillips <asphilli at ucar.edu
>>>>>>>>>> > wrote:
>>>>>>>>>>
>>>>>>>>>>> Hi Mariama,
>>>>>>>>>>> My guess is that you have either a very high resolution grid
>>>>>>>>>>> and/or a very noisy data array, and NCL is warning you that the output
>>>>>>>>>>> graphic is exceeding the maximum size that is set.
>>>>>>>>>>>
>>>>>>>>>>> See the FAQ page here:
>>>>>>>>>>> http://www.ncl.ucar.edu/FAQ/#err_msgs_012
>>>>>>>>>>>
>>>>>>>>>>> The solutions are:
>>>>>>>>>>> 1) Increase your work station size as the FAQ describes.
>>>>>>>>>>> 2) Change your contour settings. If it would be better to set
>>>>>>>>>>> non-regular levels you can set cnLevelSelectionMode = "ExplicitLevels" and
>>>>>>>>>>> set cnLevels to   (/200,300,340,380,420,460,500/)  (Those levels are a
>>>>>>>>>>> complete guess.)
>>>>>>>>>>> 3) If it is a very high resolution grid you can try plotting
>>>>>>>>>>> every other point or every third point using ::2 or ::3 syntax.
>>>>>>>>>>>
>>>>>>>>>>> If none of those solutions help please let the ncl-talk email
>>>>>>>>>>> list know.
>>>>>>>>>>> Adam
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Mon, Sep 14, 2015 at 8:46 AM, Mariama Barr - Dallas <
>>>>>>>>>>> bama4 at umbc.edu> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Hello,
>>>>>>>>>>>> Everytime I try to manually set the contour spacing to a value
>>>>>>>>>>>>  40.0 and below, I get a
>>>>>>>>>>>> "fatal:ContourPlotDraw: Workspace reallocation would exceed
>>>>>>>>>>>> maximum size 100000000" error. Below is my code:
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> 
>>>>>>>>>>>> --
>>>>>>>>>>>> Mariama Barr-Dallas
>>>>>>>>>>>> Meyerhoff Scholar/ NSA Scholar M23
>>>>>>>>>>>> Computer Science Major, History Major
>>>>>>>>>>>> University of Maryland Baltimore County
>>>>>>>>>>>> Class of 2015
>>>>>>>>>>>>
>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>> ncl-talk mailing list
>>>>>>>>>>>> ncl-talk at ucar.edu
>>>>>>>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>>>>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> 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>
>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> ncl-talk mailing list
>>>>>>>>>>> ncl-talk at ucar.edu
>>>>>>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>>>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Mariama Barr-Dallas
>>>>>>>>> Meyerhoff Scholar/ NSA Scholar M23
>>>>>>>>> Computer Science Major, History Major
>>>>>>>>> University of Maryland Baltimore County
>>>>>>>>> Class of 2015
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> ncl-talk mailing list
>>>>>>>>> ncl-talk at ucar.edu
>>>>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Mariama Barr-Dallas
>>>>>>> Meyerhoff Scholar/ NSA Scholar M23
>>>>>>> Computer Science Major, History Major
>>>>>>> University of Maryland Baltimore County
>>>>>>> Class of 2015
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> ncl-talk mailing list
>>>>>>> ncl-talk at ucar.edu
>>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Mariama Barr-Dallas
>>>>> Meyerhoff Scholar/ NSA Scholar M23
>>>>> Computer Science Major, History Major
>>>>> University of Maryland Baltimore County
>>>>> Class of 2015
>>>>>
>>>>> _______________________________________________
>>>>> ncl-talk mailing list
>>>>> ncl-talk at ucar.edu
>>>>> List instructions, subscriber options, unsubscribe:
>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>
>>>>>
>>>>
>>>
>>>
>>> --
>>> Mariama Barr-Dallas
>>> Meyerhoff Scholar/ NSA Scholar M23
>>> Computer Science Major, History Major
>>> University of Maryland Baltimore County
>>> Class of 2015
>>>
>>
>>
>>
>> --
>> Mariama Barr-Dallas
>> Meyerhoff Scholar/ NSA Scholar M23
>> Computer Science Major, History Major
>> University of Maryland Baltimore County
>> Class of 2015
>>
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>>
>
>
> --
> 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>
>

-- 
Mariama Barr-Dallas
Meyerhoff Scholar/ NSA Scholar M23
Computer Science Major, History Major
University of Maryland Baltimore County
Class of 2015
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