[ncl-talk] Produce very big figure resolution

[Rick Brownrigg]

Hi Rabah,

The image size is going to be constrained by the amount of memory on your
system, and at 524288**2, I calculate 270G pixels!!  While there are a
number of other factors that can limit the amount of memory available (user
limits, older versions of NCL were 32-bit, etc.), I might expect you could
at least double your 16384**2 image size. I suppose you could construct
your large image in pieces and then tile them all together into on large
image, but not only will that be a bit tedious to manage, I am also unaware
of what out-of-core image tools might be available.  Finally, I don't know
much about Google Map internals, but I would think it could deal with tiled
imagery (?)

Good luck!
Rick



On Fri, Aug 8, 2014 at 11:13 PM, Rabah Hachelaf <hachelaf at sca.uqam.ca>
wrote:

> Hi Rick,
>
> Thanks for quick response :) ,
>
> this happen with png workstation type and i want to attain 524288 X 524288
> pixel resolution !! this is a big image i wonder if NCL can plot it.
>
>
> 2014-08-09 0:59 GMT-04:00 Rick Brownrigg <brownrig at ucar.edu>:
>
> Hi Rabah,
>>
>> That is an interesting error message, indeed!  Does this happen with a
>> specific workstation type (png, pdf, etc.), and what is the ideal
>> resolution you would like to attain?
>>
>> Rick
>>
>>
>> On Fri, Aug 8, 2014 at 9:52 PM, Rabah Hachelaf <hachelaf at sca.uqam.ca>
>> wrote:
>>
>>> Hi All,
>>>
>>> - Can NCL produced a high resolution images?  the maximum what i can
>>> plot is
>>> 16384 X 16384, when i increase this pixel resolution i get this message
>>> error :
>>>
>>> *****************************************************************************
>>>  GKS ERROR NUMBER -502 ISSUED FROM SUBROUTINE GCLRWK:
>>>  -- cairo driver error: error opening output file
>>> *****************************************************
>>> - I need those high resolution images to overlay it in google map.
>>>
>>> Thanks for any suggestion.
>>> --
>>>  ------------------------------
>>> Cordialement,
>>> Best regards,
>>> Rabah Hachelaf
>>>
>>>
>>>
>>>
>>>
>>>
>>> --
>>> ------------------------------
>>> Cordialement,
>>> Best regards,
>>> Rabah Hachelaf
>>>
>>> _______________________________________________
>>> ncl-talk mailing list
>>> List instructions, subscriber options, unsubscribe:
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>>>
>>>
>>
>
>
> --
> ------------------------------
> Cordialement,
> Best regards,
> Rabah Hachelaf
>
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