ncl: error while loading shared libraries: libgsl.so.25: cannot open shared object file: No such file or directory

[Anielal]

Hi all, I am trying to get a domain plot from wrf out file using postWRF. I have 3 domains. But I am getting the error:

'ncl: error while loading shared libraries: libgsl.so.25: cannot open shared object file: No such file or directory'.

I tried 'sudo apt-get install gsl-bin' to install gsl in my ubuntu 20.04, but still it is showing this same error.

Kindly help me solve this issue.

Looking forward to any kind of help Thank you

[anikfal]

Hi,

The error you mentioned about libgsl.so.25 is a NCL installation issue. Also please note that PostWRF is developed in CentOS/Fedora OS, and there might be some issues while running it in Ubuntu.

What do you get if you run the command bellow? find /usr/lib64/ | grep libgsl

[Anielal]

kindly find the screenshot attached

[anikfal]

It seems no libgsl is installed on you machine.

How did you install NCL?

[Anielal]

i installed ncl with 'conda' conda create -n ncl_stable -c conda-forge ncl

[anikfal]

Install it by apt-get, as bellow: sudo apt-get -y install ncl-ncarg

Do not use any conda environment for PostWRF.

[Anielal]

yes

[Anielal]

I installed ncl as suggested. Now its showing some other error. pfa screenshot.

[Anielal]

Also, it is asking for only 2 domains, whereas I have 3 domains.!

[anikfal]

In the namelist.wrf section, the value of +number_of_domains (topography) must be equal to the number of domains (for your case is 3):

Domain_On-Off                    = 0

namelist.wps_path (schematic)   = /home/anikfal/WRF4.2.2/WPS/namelist.wps
background_color (schematic)    = forestgreen
lables_On-Off (schematic)       = 0

+Domain_on_off (topography)      = 1
 +number_of_domains (topography) = 3
 +box_color                      = white

Also you can use your namelist.wps to plot the domains by setting +Domain_on_off (topography) to 0

Domain_On-Off                    = 1

namelist.wps_path (schematic)   = /home/anikfal/WRF4.2.2/WPS/namelist.wps
background_color (schematic)    = forestgreen
lables_On-Off (schematic)       = 0

+Domain_on_off (topography)      = 0
 +number_of_domains (topography) = 3
 +box_color                      = white

You must set namelist.wps_path (schematic) to the path of your namelist.wps.

Please note that PostWRF is best to be run on CentOS or Fedora.

[Anielal]

okay. Thanks for the help