Re: errors with AMWG diagnostic package

Mark,

As far as I know, you've never been able to have multiple PDF files
open at a time.
I just tried my sample PDF script on version 5.0.0, 5.1.0, and 5.1.1,
and had the same
results with all of them - I got an error about multiple PDF
workstations.

If you can provide me with a script that shows the problem in V5.1.1,
and not V5.0, then
I will take a look.

Meanwhile, what Dennis said below should help.

Also, to be safe, you can add:

    delete(wks)

before the "end do". This will force the current PDF file to be closed
properly.

--Mary

On Jul 1, 2009, at 10:00 PM, Dennis Shea wrote:

> I have not heard of any problems like that described.
>
> As noted at
> http://www.ncl.ucar.edu/new_release.shtml
>
> There is no mention of any work station updates.
> ----
> Under the scenario below, specifically
>
> wks = gsn_open_wks(plot_type,...)
>
> The key is the "..." say "pltName"
>
> wks = gsn_open_wks(plot_type,pltName + i)
>
> where each iteration there is a new name ... should work.
>
> D
>
> Mark Branson wrote:
>> Hi everyone.
>>
>> Most of the ncl routines that are called by the AMWG diagnostics
>> package have a loop of this basic format:
>>
>> do i = 0, nvars-1
>> .
>> .
>> wks = gsn_open_wks(plot_type,...)
>> .
>> (set a bunch of resources)
>> .
>> gsn_panel(wks,plot,(/2,1/),pan) ; panel plot
>> .
>> frame (wks)
>> end do
>>
>> and plot_type is in fact set to pdf. Again, this worked splendidly
>> in
>> all versions of ncl 5.0 and before, but now it fails in 5.1. That
>> seems strange to me.
>>
>> To my knowledge there is no gsn_close_wks command. Doesn't the frame
>> command update and clear the workstation objects?
>>
>> Thanks!
>> Mark
>>
>>> In fact you cannot have more than one PDF workstation open at a
>>> time.
>>> PDF files end with a pointer to a reference table that specifies
>>> byte addresses
>>> for PDF objects in the file. This table cannot be completed until
>>> the file is
>>> closed. I decided that the benefit/cost ratio was not high enough
>>> to make
>>> the necessary mods to keep in memory all of the necessary pointers
>>> for
>>> more than a single PDF output file, since I was thinking it would be
>>> rare
>>> that someone would want that.
>>>
>>> This limitation is mentioned at:
>>>
>>> http://ncarg.ucar.edu/gks/pdf.html
>>>
>>> Fred Clare
>>>
>>>
>>>
>>>
>>>
>>> On Jul 1, 2009, at 3:55 PM, Mark Branson wrote:
>>>
>>>> I can't remember when ncl v5.1 came out and was installed on my
>>>> machine, but I'm pretty sure it happened in the last few months.
>>>> Because I have a version of the AMWG diagnostic package that Rich
>>>> Neale maintains, and back on April 27th it worked fine, but now I
>>>> get
>>>> errors like these:
>>>>
>>>> SET 3 ZONAL LINE PLOTS
>>>> MAKING ANN PLOTS
>>>> Copyright (C) 1995-2009 - All Rights Reserved
>>>> University Corporation for Atmospheric Research
>>>> NCAR Command Language Version 5.1.0
>>>> The use of this software is governed by a License Agreement.
>>>> See http://www.ncl.ucar.edu/ for more details.
>>>> warning:GKS:GOPWK: -- Only one PDF workstation can be open at a
>>>> time
>>>> fatal:Workstation with PID#88 is not open
>>>> ERROR 3 IN NGSETI - value for WO must reference an open
>>>> workstation.
>>>> ERROR 1 IN NGSETI - Uncleared prior error
>>>> ERROR 1 IN NGSETI - Uncleared prior error
>>>> ERROR 1 IN NGSETI - Uncleared prior error
>>>> ERROR 1 IN NGSETI - Uncleared prior error
>>>> ERROR 1 IN NGSETI - Uncleared prior error
>>>> fatal:Unable to open Workstation-Can't Create
>>>> fatal:Unable to access object with id:-4
>>>> fatal:NhlGetValues:PID #-4 is invalid
>>>> fatal:Execute: Error occurred at or near line 3178 in file
>>>> $NCARG_ROOT/
>>>> lib/ncarg/nclscripts/csm/gsn_code.ncl
>>>>
>>>> Perhaps I need to install v5.1.1????
>>>>
>>>> Thanks,
>>>> Mark Branson
>>>>
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>>
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Received on Thu Jul 02 2009 - 08:45:16 MDT