[ncl-talk] How to Convert binary Mask to NetCDF

[Alan Brammer]

I don't have free time to write anything more than pseudocode for other
people.

All the resources are there.
Good luck.

On 12 June 2015 at 15:31, Dr. Avinash Kumar <kumaravinash13 at gmail.com>
wrote:

> ​Dear Alan
> Thanks for your swift reply and solution. Yes, suggested Example 2 may be
> required to fulfil my requiremnts but I not well versed to use NCL. I would
> be appricated if you can edit and provide  that Example Script.ncl to
> achive output as Netcdf mask of that area.
>
> Thanking you and Regards
> Avinash
>
>
>
> On Fri, Jun 12, 2015 at 10:31 PM, Alan Brammer <abrammer at albany.edu>
> wrote:
>
>> Have you attempted to do this? Below are links to the relevant
>> documentation. The line of code pasted below allowed me to read the data
>> and it looked representative of the plot you attached.
>>
>> Example 2 on the binary page shows pretty much exactly what you desire.
>>
>>
>> Good luck.
>>
>>
>> https://www.ncl.ucar.edu/Applications/r-binary.shtml
>> https://www.ncl.ucar.edu/Document/Functions/Built-in/fbindirread.shtml
>>
>>
>> filename = "region_n.msk"
>>
>> data := fbindirread(filename, 0,(/448,304/), "byte")
>>
>>
>> https://www.ncl.ucar.edu/Applications/o-netcdf.shtml
>>
>>
>>
>>
>>
>> On 12 June 2015 at 11:34, Dr. Avinash Kumar <kumaravinash13 at gmail.com>
>> wrote:
>>
>>> Dear All
>>> I would be very much grateful if anyone can make a masking file in
>>> netcdf file using the region_n.msk: 448 rows x 304 columns [binary
>>> file]. The details are given in below link. Further, this Netcdf file can
>>> be used to mask any netcdf file based on our required regions.
>>>
>>> Region Masks
>>> http://nsidc.org/data/polar_stereo/tools_masks.html
>>>
>>> Region masks for the Northern (n). The files contain a 300-byte header,
>>> followed by a two-dimensional byte array stored by rows in column order.
>>> Regions are assigned different pixel values as shown in the following table.
>>>
>>> *region_n.msk: 448 rows x 304 columns [ATTACHED FOR KIND REFERENCE]*
>>> Grided mask map:JPG [ATTACHED FOR KIND REFERENCE]
>>>
>>> Pixel Value Arctic Region
>>> 1 Non-regional ocean
>>> 2 Sea of Okhotsk and Japan
>>> 3 Bering Sea
>>> 4 Hudson Bay
>>> 5 Baffin Bay/Davis Strait/Labrador Sea
>>> 6 Greenland Sea
>>> 7 Kara and Barents Seas
>>> 8 Arctic Ocean
>>> 9 Canadian Archipelago
>>> 10 Gulf of St. Lawrence
>>> 11 Land
>>> 12 Coast
>>> 0 Lakes, extended coast
>>>
>>> Thanking you and eagerly waiting for help from anyone.
>>>
>>> Kind Regards
>>> Avinash
>>> *Dr. Avinash Kumar **| **Scientist 'C' *
>>> *ESSO - **National Centre for Antarctic & Ocean Research*
>>> Earth System Science Organization *| *Ministry of Earth Sciences *|* Government
>>> of India
>>> Headland Sada *|* Vasco-da-Gama *|* Goa 403 804 *|* India
>>>
>>>
>>>
>>> *Phone No: **+91-**832-2525-637 (O) **|** +91-832-252556488 (R) **| **Mobile
>>> No: +91-9158536334 <%2B91-9158536334> *
>>> *Email: avinash at ncaor.gov.in <avinash at ncaor.gov.in> **|** kumaravinash13 at gmail.com
>>> <kumaravinash13 at gmail.com>*
>>> *Website: *www.ncaor.gov.in *| **http://www.researchgate.net/profile/Avinash_Kumar34
>>> <http://www.researchgate.net/profile/Avinash_Kumar34>  *
>>>
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>>
>
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