[ncl-talk] Contour Plot Help

Wed Sep 16 08:37:32 MDT 2015

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
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