Re: http://www.ncl.ucar.edu/Applications/Scripts/polyg_17.ncl example

Thanks, Dave!

I finished downloading and testing NCL 6.1.2 and it did not throw any syntax error on the new := operator.

Thanks for adding this new reassignment operator! It's really convenient.

From: Dave Allured - NOAA Affiliate [mailto:dave.allured@noaa.gov]
Sent: Friday, December 06, 2013 12:33 PM
To: Joe Lee
Cc: ncl-talk@ucar.edu
Subject: Re: http://www.ncl.ucar.edu/Applications/Scripts/polyg_17.ncl example

Joe,

What Wei said, but here is a little more information.

":=" is not a typo. This is a new operator that was added in NCL version 6.1.1, You have 6.1.0.

http://www.ncl.ucar.edu/prev_releases.shtml#NewOperator6.1.1

You can use a sequence like the following to replace the := operator. The if statement is frequently needed when the assignment is inside a do loop.

; x := expression ; line being replaced

  if (isdefined ("x")) then
    delete (x)
  end if
  x = expression

--Dave

On Fri, Dec 6, 2013 at 11:19 AM, H. Joe Lee <hyoklee@hdfgroup.org<mailto:hyoklee@hdfgroup.org>> wrote:
Hi,

  I cannot run the plyg_17.ncl example.

  Is ":=" typo?

  The blow is the error message:

------------------
  Copyright (C) 1995-2012 - All Rights Reserved

 University Corporation for Atmospheric Research

 NCAR Command Language Version 6.1.0

 The use of this software is governed by a License Agreement.

 See http://www.ncl.ucar.edu/ for more details.

fatal:syntax error: line 113 in file polyg_17.ncl before or near :

      x :

--------^

fatal:error in statement

fatal:Syntax Error in block, block not executed

fatal:error at line 125 in file polyg_17.ncl

fatal:syntax error: line 206 in file polyg_17.ncl before or near :

      ii :

---------^

fatal:error in statement

fatal:syntax error: line 208 in file polyg_17.ncl before or near :

      ii :

---------^

fatal:error in statement

fatal:syntax error: line 210 in file polyg_17.ncl before or near :

      ii :

---------^

fatal:error in statement

fatal:Syntax Error in block, block not executed

fatal:error at line 238 in file polyg_17.ncl

--
HDF: Software that Powers Science
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Received on Fri Dec 6 11:57:28 2013