[ncl-talk] overlay_11.ncl
Md. Jalal Uddin
dmjalal90 at gmail.com
Tue Nov 20 02:10:58 MST 2018
Dear Mary,
Please find the variable overview as follows:
Variable: u
Type: float
Total Size: 32768 bytes
8192 values
Number of Dimensions: 3
Dimensions and sizes: [time | 1] x [lat | 64] x [lon | 128]
Coordinates:
time: [0..0]
lat: [-87.8638..87.8638]
lon: [-180..177.1875]
Number Of Attributes: 5
lev : 500
_FillValue : -999
long_name : Zonal Wind
short_name : U
units : m/s
Variable: v
Type: float
Total Size: 32768 bytes
8192 values
Number of Dimensions: 3
Dimensions and sizes: [time | 1] x [lat | 64] x [lon | 128]
Coordinates:
time: [0..0]
lat: [-87.8638..87.8638]
lon: [-180..177.1875]
Number Of Attributes: 5
lev : 500
_FillValue : -999
long_name : Meridional Wind
short_name : V
units : m/s
(0) Zonal Wind (m/s) : min=-13.8651 max=40.7452
(0) Meridional Wind (m/s) : min=-13.8738 max=12.5208
I did not find grid_lont and grid_latt in the data (uvt.nc,
http://www.ncl.ucar.edu/Applications/Data/). Please find the script in the
attachment.
fatal:Variable (grid_lont) is undefined
What can I do?
Best Regards,
Jalal
On Tue, Nov 20, 2018 at 1:18 AM Mary Haley <haley at ucar.edu> wrote:
> Dear Jalal,
>
> You sent your message over the weekend, which is why it was not answered
> right away.
>
> Are you getting any errors or warnings from this script? It's crucial to
> include this information when you have a question about NCL.
>
> Usually the reason why data doesn't appear on a map correctly is because
> the lat/lon data being provided in the script is not correct for the data
> you are trying to plot.
>
> It looks like you are doing everything correctly, as you have these two
> lines which tell NCL where to place the data on the map:
>
> res at sfXArray = grid_lont ; Required to tell NCL where
> to
> res at sfYArray = grid_latt ; overlay data on globe.
>
>
> Did you look at grid_lont and grid_latt? I suggest doing a printMinMax to
> make sure that the lat/lon values look correct:
>
> printMinMax(grid_lont,0)
> printMinMax(grid_latt,0)
>
> These values should be around 23 latitude and 90 longitude, if this data
> is over Bangladesh.
>
> A useful debugging tool is to use the gsn_coordinates procedure to draw
> the location of your grid_lont and grid_latt arrays on your map. For
> example, after this call:
>
> plot = gsn_csm_contour_map(wks,aqual,res)
>
> add the lines:
>
> mkres = True
> mkres at gsnCoordsLat = grid_latt
> mkres at gsnCoordsLon = grid_lont
> ;mkres at gsMarkerSizeF = 5 ; may need to adjust this if markers are
> too large or too small
> gsn_coordinates(wks,plot,aqual,mkres)
>
> For more information on gsn_coordinates, see some examples at:
>
> http://www.ncl.ucar.edu/Applications/datagrid.shtml
> If you continue to have problems, then it would really help if you could
> do one or more of the following:
>
> Provide the output from doing a printVarSummary and printMinMax on all the
> variables you are trying to plot *and* grid_lont and gridlatt.
>
> Provide the full script and the data. If the data is > 2 MB, then put it
> somewhere that we can download it, or use ftp:
>
> http://www.ncl.ucar.edu/ftp_files.shtml
>
> Thank you,
>
> --Mary
>
>
>
>
>
> On Mon, Nov 19, 2018 at 2:11 AM Md. Jalal Uddin <dmjalal90 at gmail.com>
> wrote:
>
>> Could anyone tell me why I am not getting temperature contour for
>> Bangladesh?
>>
>> On Sun, Nov 18, 2018 at 4:19 PM Md. Jalal Uddin <dmjalal90 at gmail.com>
>> wrote:
>>
>>> Hi all,
>>>
>>> I followed overlay_11.ncl example (
>>> https://www.ncl.ucar.edu/Applications/overlay.shtml) code and data;
>>> however, I am getting the temperature contour. I tried to mask out over
>>> Bangladesh.
>>>
>>> How can I get the temperature contour?
>>>
>>> Best regards,
>>> Jalal
>>> --
>>> *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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>>
>
--
*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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