[ncl-talk] geolocation_circle and gc_inout
Md. Jalal Uddin
dmjalal90 at gmail.com
Fri Apr 5 18:49:42 MDT 2019
Sir,
As I don't have 0.0 value within 500 km. What should I do to get
the precipitation value within circles?
It would be a great help to me.
Best Regards,
Jalal
On Tue, Apr 2, 2019 at 6:59 AM Md. Jalal Uddin <dmjalal90 at gmail.com> wrote:
> Sorry, sir. I don't have the 0.0 value within 500 km. Please look at the
> attached figures.
>
> On Mon, Apr 1, 2019 at 10:14 PM Dennis Shea <shea at ucar.edu> wrote:
>
>> [1] Save time: change *N=180* to (say) *N=90*
>>
>> *gc_inout* <http://www.ncl.ucar.edu/Document/Functions/Built-in/gc_inout.shtml> while written in "C" , it is not particularly 'fast'. It is best to reduce the number of points to check.
>>
>> [2] * *YOU*** should put timing checks into your code. This will tell you where the time is being spent. EG:
>>
>> beg_script = *get_cpu_time*()
>> :
>> :
>> beg_geo_circle = *get_cpu_time*()
>> circle = *geolocation_circle*(slat, slon, srad, sradu, N, optgeo) ; circle is type list
>> * print*("geolocation_circle: " + (*get_cpu_time*() - beg_geo_circle)+" seconds")
>> :
>> :
>> beg_gc_inout = *get_cpu_time*()
>> latlon_circle := *gc_inout*(lat2d,lon2d, poly_lat,poly_lon)
>> print("gc_inout: " + (*get_cpu_time*() - beg_gc_inout)+" seconds")
>> :
>> :
>>
>> : at end of script
>>
>> print("Script: Total time: " + (*get_cpu_time*() - beg_script)+" seconds")
>>
>> [3]
>> It seems you have 0.0 in your data as both a valid value and as a missing value [_FillValue]?
>> In your case, you [possibly] have 0.0 values *within* and* outside* 500km. Is that correct?
>> Currently, values outside the circle are set to False by gc_inout.
>> You have also, reset value 0.0 to _FillValue.
>>
>> If True, you will have to add code to draw a circle.
>>
>>
>>
>>
>>
>> On Fri, Mar 29, 2019 at 5:21 AM Md. Jalal Uddin <dmjalal90 at gmail.com>
>> wrote:
>>
>>> In addition, the do loop is too slow. How can I make it faster?
>>>
>>> On Fri, Mar 29, 2019 at 5:04 PM Md. Jalal Uddin <dmjalal90 at gmail.com>
>>> wrote:
>>>
>>>> Thank you, sir, for your kind help. I was able to mask data for
>>>> multiple cyclone's centres, but the figure did not show the whole circle
>>>> data (circle_mar.png). I attached the output figure and code in the
>>>> attachment. Could I have your kind suggestion?
>>>>
>>>>
>>>> On Fri, Mar 29, 2019 at 11:35 AM Dennis Shea <shea at ucar.edu> wrote:
>>>>
>>>>> Please see examples 29 and 30 at:
>>>>>
>>>>> *https://www.ncl.ucar.edu/Applications/polyg.shtml*
>>>>> <https://www.ncl.ucar.edu/Applications/polyg.shtml>
>>>>>
>>>>> On Thu, Mar 28, 2019 at 2:54 AM Md. Jalal Uddin <dmjalal90 at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> Could anyone give me the idea to mask rainfall data for multiple
>>>>>> circles? geolocation_circle produce ''circle_lat and lon'' that is 3
>>>>>> dimensions, but the data lat and lon 1 dimension.
>>>>>>
>>>>>> How can be used gc_inout to mask the data inside multiple circles?
>>>>>> Please look at the multiple circle's figures in the attached file.
>>>>>>
>>>>>> Any help would be appreciated.
>>>>>>
>>>>>> Variable: circle_lat
>>>>>> Type: float
>>>>>> Total Size: 10800 bytes
>>>>>> 2700 values
>>>>>> Number of Dimensions: 3
>>>>>> Dimensions and sizes: [location | 15] x [radii | 1] x [circle | 180]
>>>>>> Coordinates:
>>>>>> Number Of Attributes: 7
>>>>>> _FillValue : 9.96921e+36
>>>>>> radii_input_units : km
>>>>>> radii_input_values : 500
>>>>>> radii_converted_units : great_circle_degrees
>>>>>> radii_converted_values : 4.522022
>>>>>> long_name : circle latitudes
>>>>>> units : degrees_north
>>>>>>
>>>>>> Variable: circle_lon
>>>>>> Type: float
>>>>>> Total Size: 10800 bytes
>>>>>> 2700 values
>>>>>> Number of Dimensions: 3
>>>>>> Dimensions and sizes: [location | 15] x [radii | 1] x [circle | 180]
>>>>>> Coordinates:
>>>>>> Number Of Attributes: 7
>>>>>> _FillValue : 9.96921e+36
>>>>>> radii_converted_values : 4.522022
>>>>>> radii_converted_units : great_circle_degrees
>>>>>> radii_input_values : 500
>>>>>> radii_input_units : km
>>>>>> long_name : circle longitudes
>>>>>> units : degrees_east
>>>>>>
>>>>>> --
>>>>>> *Md. Jalal Uddin*
>>>>>> MSc in Applied Meteorology (English Language)
>>>>>> Nanjing University of Information, Science and Technology, China
>>>>>> B.Sc. in Disaster Management (Hons.)
>>>>>> Patuakhali Science and Technology University, Bangladesh.
>>>>>> Cell: +8613260859092, +8801792052662
>>>>>> Web: www.dmjalal90.weebly.com
>>>>>> Facebook: jalal.hossen.39
>>>>>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>>>>>> Twitter: dmjalal90
>>>>>> Skype: dmjalal90
>>>>>> _______________________________________________
>>>>>> ncl-talk mailing list
>>>>>> ncl-talk at ucar.edu
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>>>>>>
>>>>>
>>>>
>>>> --
>>>> *Md. Jalal Uddin*
>>>> MSc in Applied Meteorology (English Language)
>>>> Nanjing University of Information, Science and Technology, China
>>>> B.Sc. in Disaster Management (Hons.)
>>>> Patuakhali Science and Technology University, Bangladesh.
>>>> Cell: +8613260859092, +8801792052662
>>>> Web: www.dmjalal90.weebly.com
>>>> Facebook: jalal.hossen.39
>>>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>>>> Twitter: dmjalal90
>>>> Skype: dmjalal90
>>>>
>>>
>>>
>>> --
>>> *Md. Jalal Uddin*
>>> MSc in Applied Meteorology (English Language)
>>> Nanjing University of Information, Science and Technology, China
>>> B.Sc. in Disaster Management (Hons.)
>>> Patuakhali Science and Technology University, Bangladesh.
>>> Cell: +8613260859092, +8801792052662
>>> Web: www.dmjalal90.weebly.com
>>> Facebook: jalal.hossen.39
>>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>>> Twitter: dmjalal90
>>> Skype: dmjalal90
>>>
>>
>
> --
> *Md. Jalal Uddin*
> MSc in Applied Meteorology (English Language)
> Nanjing University of Information, Science and Technology, China
> B.Sc. in Disaster Management (Hons.)
> Patuakhali Science and Technology University, Bangladesh.
> Cell: +8613260859092, +8801792052662
> Web: www.dmjalal90.weebly.com
> Facebook: jalal.hossen.39
> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
> Twitter: dmjalal90
> Skype: dmjalal90
>
--
*Md. Jalal Uddin*
MSc in Applied Meteorology (English Language)
Nanjing University of Information, Science and Technology, China
B.Sc. in Disaster Management (Hons.)
Patuakhali Science and Technology University, Bangladesh.
Cell: +8613260859092, +8801792052662
Web: www.dmjalal90.weebly.com
Facebook: jalal.hossen.39
LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
Twitter: dmjalal90
Skype: dmjalal90
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