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Re: [ferret_users] How to set Z-axis as elevation



Thank you Satyesh for your kind approach.
But, I wanted to save rainfall as a function of elevation. I think it would be better if we can take elevation on Z-axis, Right? I tried something like this, 

 currently SET data sets:

     1> ./rainfall.topo.nc  (default)

     name             title                                                   L

  MEAN_RAINFALL     mean rainfall                    1:360     1:180     ...       ...

  TOPO              etopo                            1:360     1:180     ...       ...


 let mask = IF (TOPO GE 100 AND topo LT 1000) THEN 1

 let rf = MEAN_RAINFALL*mask


Here, I got only one level which is from 100 to 1000m. I could not able to define that as a function of K dimension.  

Or Is it any possible way to deal with this situation. Please suggest.


Regards
Pratik


On Mon, May 27, 2019 at 1:40 PM Satyesh Ghetiya <satyeshghetiya@xxxxxxxxx> wrote:
Hi,
If I am understanding correctly, you should do this manually by listing each coordinates' rain and elevation value to a text file and then reading it later. Following are few steps:
(1) let m_rain=if mean_rainfall ge 0 then mean_rainfall else (-1)
! To make bad values or missing values as -1. Later use -1 as bad
(2) list/clobber/file=Elevation_rain.dat/nohead/form=(f9.3,x,f9.3,x,f9.3,x,f9.3,) topo,m_rain,x[gx=topo],y[gy=topo]
! ^ Last x and y are just to keep track of lat and long in case required in future.
(3) Come out of ferret session and restart new session and read the file by : file/var=ele,m_r,lon,lat Elevation_rain.dat ; sh da ; 

By this you can do rain vs elevation analysis. 

On Mon, May 27, 2019 at 6:49 AM Pratik Kad <pratikkad17@xxxxxxxxx> wrote:
Dear All,
I need to save rainfall with respect to elevation. I tried with masking by elevation (Etopo) data; also I faced rang issue during visualisation. 
How can I take z-axis as elevation topography for rainfall parameter from attached data? 
Thanks in advance.

Regards
Pratik


Regards,
G Satyesh, India.


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