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RE: [ferret_users] PyFerret/Ferret release v7.4.4

Hello Saurabh,


It definitely can handle point location station data, but I read these data in differently to gridded data.


I read them in as a .txt or .dat file in column format using the set data command. So instead of having a gridded data with 2+ dimensions on each variable, you read in all information (variables and dimensions) as 1D variables.


It gives you something that looks like:

                                I               J              K             L

Lat                          1600       .               .               .

Lon                         1600       .               .               .

Dep                        1600       .               .               .

MyVariable         1600       .               .               .




From: owner-ferret_users@xxxxxxxx <owner-ferret_users@xxxxxxxx> On Behalf Of saurabh rathore
Sent: Friday, 7 December 2018 9:59 PM
To: Ansley C. Manke <ansley.b.manke@xxxxxxxx>
Cc: ferret users <ferret_users@xxxxxxxx>
Subject: Re: [ferret_users] PyFerret/Ferret release v7.4.4


Thank you Ansley,

For providing the update. 


I was wondering that do we (Ferret) have capability to handle station data ? I have asked this question few weeks ago when I was working on a research voyage data of CTD bottle sample and Shipboard CTD along the track of ship. Russ and you also suggested some solutions to get a proper netcdf file for such data but I didn't understand anything.


And one more thing I also want to compute neutral density surface so is there any function available for that ?


Cheers, Saurabh 


On Sat, Dec 8, 2018 at 12:46 PM Ansley C. Manke <ansley.b.manke@xxxxxxxx> wrote:

Hi all

A new PyFerret and Ferret v7.4.4 are available:



The main purpose of this release is to link with netCDF; some datasets and url's cannot be used correctly with the newer netCDF 4.6 library. 

There are also a few bug fixes, including several items reported in the Ferret List.  We'll answer those threads to let you know what was done.

Finally, there's a new default color palette for Ferret.  A number of you have been urging this for a while and we have become convinced.  The new default colormap is "viridis", which is a Perceptually uniform colormap .  I've attached an example plot.

You can always change your color palette in any of these ways:

  • For a single command, with the /PALETTE qualifier:

      SHADE/PALETTE=centered_diff wind_speed
  • For the current session with the PALETTE command: 

       PALETTE rnb2  ! use rnb2 for subsequent commands unless /palette qualifier is used
  • For all your PyFerret or Ferret sessions, by putting a PALETTE command into a .ferret startup file.

And see the FAQ's for more discussion of color palettes.  We'll be adding more there, including examples of some of the nice ones available.








Saurabh Rathore

Research Scholar (PhD.)

Centre For Oceans, Rivers, Atmosphere & Land Science Technology

Indian Institute Of Technology, Kharagpur

contact :- 91- 8345984434

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