| DEFSYSV with /TEST option? [message #94678] |
Tue, 15 August 2017 10:27  |
MarioIncandenza
Messages: 231
Registered: February 2005
|
Senior Member |
|
|
The /TEST keyword to DEFSYSV allows you to set default values for system variables; that is, if the value is not already set by an upstream process, DEFSYSV will set it. This is what the documentation says:
https://harrisgeospatial.com/docs/DEFSYSV.html
"TEST: Set this keyword to create a new system variable only if one does not currently exist."
But when we try to do this:
IDL> defsysv,'!VAR',0,/test
% Keyword TEST not allowed in call to: DEFSYSV
IOID (Implemented Only In Documentation)?
--Edward H.
|
|
|
|
|
|
| Re: DEFSYSV with /TEST option? [message #94681 is a reply to message #94679] |
Thu, 17 August 2017 10:40  |
Dick Jackson
Messages: 347
Registered: August 1998
|
Senior Member |
|
|
… and correctly for me in IDL 8.5.1 on Windows.
Cheers,
-Dick
Dick Jackson Software Consulting Inc.
Victoria, BC, Canada --- http://www.d-jackson.com
On Tuesday, 15 August 2017 10:57:30 UTC-7, wlandsman wrote:
> What version of IDL are you running? Your example works correctly for me in IDL 8.5.1 in both Linux and MacOS.
>
> On Tuesday, August 15, 2017 at 1:27:20 PM UTC-4, Edward Hyer wrote:
>> The /TEST keyword to DEFSYSV allows you to set default values for system variables; that is, if the value is not already set by an upstream process, DEFSYSV will set it. This is what the documentation says:
>> https://harrisgeospatial.com/docs/DEFSYSV.html
>> "TEST: Set this keyword to create a new system variable only if one does not currently exist."
>>
>> But when we try to do this:
>>
>> IDL> defsysv,'!VAR',0,/test
>> % Keyword TEST not allowed in call to: DEFSYSV
>>
>> IOID (Implemented Only In Documentation)?
>>
>> --Edward H.
|
|
|
|
| Re: DEFSYSV with /TEST option? [message #94682 is a reply to message #94681] |
Thu, 17 August 2017 16:03 |
MarioIncandenza
Messages: 231
Registered: February 2005
|
Senior Member |
|
|
On Thursday, August 17, 2017 at 10:40:38 AM UTC-7, Dick Jackson wrote:
> … and correctly for me in IDL 8.5.1 on Windows.
>
> Cheers,
> -Dick
>
> Dick Jackson Software Consulting Inc.
> Victoria, BC, Canada --- http://www.d-jackson.com
>
> On Tuesday, 15 August 2017 10:57:30 UTC-7, wlandsman wrote:
>> What version of IDL are you running? Your example works correctly for me in IDL 8.5.1 in both Linux and MacOS.
>>
>> On Tuesday, August 15, 2017 at 1:27:20 PM UTC-4, Edward Hyer wrote:
>>> The /TEST keyword to DEFSYSV allows you to set default values for system variables; that is, if the value is not already set by an upstream process, DEFSYSV will set it. This is what the documentation says:
>>> https://harrisgeospatial.com/docs/DEFSYSV.html
>>> "TEST: Set this keyword to create a new system variable only if one does not currently exist."
>>>
>>> But when we try to do this:
>>>
>>> IDL> defsysv,'!VAR',0,/test
>>> % Keyword TEST not allowed in call to: DEFSYSV
>>>
>>> IOID (Implemented Only In Documentation)?
>>>
>>> --Edward H.
8.2.3 on Linux, does not work. Doesn't really matter, it's a two-line workaround using the EXISTS= keyword, but the documentation doesn't indicate this feature is new.
|
|
|
|
| Re: DEFSYSV with /TEST option? [message #94689 is a reply to message #94682] |
Mon, 21 August 2017 09:45 |
Louis Giglio
Messages: 2
Registered: February 2013
|
Junior Member |
|
|
Hi Ed!
Seems to have been added in IDL 8.5 (or perhaps 8.4.x):
IDL> print, !version
{ x86_64 linux unix linux 8.4 Sep 27 2014 64 64}
IDL> defsysv,'!VAR',0,/test
% Keyword TEST not allowed in call to: DEFSYSV
% Execution halted at: $MAIN$
IDL> print, !version
{ x86_64 linux unix linux 8.5 Jul 7 2015 64 64}
IDL> defsysv,'!VAR',0,/test
IDL> print, !var
0
Cheers,
Louis
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
