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| Re: what happened to time/date functions? [message #21585 is a reply to message #21584] |
Fri, 01 September 2000 15:55  |
William Daffer
Messages: 34
Registered: February 1999
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Member |
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Mirko Vukovic <mvukovic@taz.telusa.com> writes:
> In article <MPG.14198bc9d020ee9989c19@news.frii.com>,
> davidf@dfanning.com (David Fanning) wrote:
>> Mirko Vukovic (mvukovic@taz.telusa.com) writes:
>>
>>> I'm runing idl 5.3.1 on windows nt, and cannot access
>>> the time and date functions introduced in 5.1.
>>>
>>> Am I on the correct planet, or have I missed something?.
>>
>> No, Mirko, you've been in a time warp. Those things
>> disappeared in IDL 5.2. Not Y2K compatible, I guess. :-)
>>
>> Check out the Label_Date function. And there are some
>> neat new things in IDL 5.4 (a TimeGen function, for
>> example). I think most everyone though is using the
>> date/time functions available on either the Johns
>> Hopkins Applied Physics Lab or NASA Astronomy ftp
>> sites.
>
> thanks,
>
> hm, I saw nothing in the list of obsolete routines.
> Thanks for the pointer to the other libraries. As for
> 5.4, well, some of us are mere mortals :-)
>
> have a good weekend
>
> Mirko
>
They weren't really 'obsoleted' since the functionality wasn't
replaced, just removed. If you skipped from 5.1 to 5.3, as I did,
these routines just *disappeared*.
I think this whole thing was handled pretty badly. Apparently few
share my concern since most everyone else seems to be using the
JHAPL routines and so the loss of this functionality is a 'eh... so
what?' sort of thing for them. But it does demonstrate that RSI will
remove whole blocks of functionality without much warning.
On the plus side, I can't think of another such 'block of
functionality' which might share characteristics making it liable to
a similar fate as these routines, so I imagine we won't see such
wholesale decimation of the code base again.
If you want these routines back, see my other message in this
thread. I use these routines all the time with no problem. Just
don't use 2 digit years and you'll be fine.
William
--
Ab hoc possum videre domum tuum.
Public Key: http://home.earthlink.net/~whdaffer/#PGP-public-key
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| Re: what happened to time/date functions? [message #21586 is a reply to message #21585] |
Fri, 01 September 2000 15:16 |
Mirko Vukovic
Messages: 124
Registered: January 1996
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Senior Member |
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In article <m3wvgwlz6i.fsf@localhost.localdomain>,
William Daffer <whdaffer@earthlink.net> wrote:
>
> As David remarked, they disappeared in IDL 5.2 because of Y2K
> compliance issues, mostly having to do with ENVI, as I recall. A
> *very* small issue, as you'll see below. I had something of a
> knockdown-dragout with them over this, since I use these *all* the
> time and I have *no* problems with them (because I always use 4 digits
> for my years!)
>
> You can retreive the old files from idl 5.2 release CD (in
> rsi/idl52/lib/compat) or just get them from the the /lib directory in
> 5.1 distrib CD. If you don't have those, contact me and I'll put them
> on an ftp site for you.
thanks.
A colleague of mine had the 5.2 CD handy and I got the files.
Mirko
Sent via Deja.com http://www.deja.com/
Before you buy.
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| Re: what happened to time/date functions? [message #21588 is a reply to message #21586] |
Fri, 01 September 2000 11:55 |
William Daffer
Messages: 34
Registered: February 1999
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Member |
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As David remarked, they disappeared in IDL 5.2 because of Y2K
compliance issues, mostly having to do with ENVI, as I recall. A
*very* small issue, as you'll see below. I had something of a
knockdown-dragout with them over this, since I use these *all* the
time and I have *no* problems with them (because I always use 4 digits
for my years!)
You can retreive the old files from idl 5.2 release CD (in
rsi/idl52/lib/compat) or just get them from the the /lib directory in
5.1 distrib CD. If you don't have those, contact me and I'll put them
on an ftp site for you.
When I talked to them about this, they sent me a revised version of
str_to_dt.pro that fixed the only y2k compliance issue they mentioned
specifically. The output from 'diff' for these two versions (diff new
old) is:
71,78c71
<
< CATCH, onerror
<
< if onerror NE 0 then begin
< print, !error_state.msg
< return,0
< endif
<
---
>
133,138c126,128
<
< if year eq 0 then begin
< message,'There is no year 0.'
< return,0
< endif
<
---
>
> if year lt 100 then year = year + 1900 ;Not Y2K compatible!!!
>
As you can see, the old version defaults 2 digit years to 1900 + year,
which they disallow in the new version. This is the only explicitly
mentioned y2k problem, although they've hinted at others. I asked
about these, but never got a response. I've had no problem with these
routines, they are the general way I represent time in all my
production code and have been since 1997, and I've been running a
this system 24/7 since then. It ran quite happily over the
change. My perl code broke, but not the IDL code.
William
Mirko Vukovic <mvukovic@taz.telusa.com> writes:
> Hi,
>
> I'm runing idl 5.3.1 on windows nt, and cannot access
> the time and date functions introduced in 5.1.
>
> Am I on the correct planet, or have I missed something?.
> (my newsgroup searcher is not functioning at the moment)
>
> Thanks,
>
> Mirko
>
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
--
Ab hoc possum videre domum tuum.
Public Key: http://home.earthlink.net/~whdaffer/#PGP-public-key
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| Re: what happened to time/date functions? [message #21591 is a reply to message #21588] |
Fri, 01 September 2000 10:21 |
Mirko Vukovic
Messages: 124
Registered: January 1996
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Senior Member |
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In article <MPG.14198bc9d020ee9989c19@news.frii.com>,
davidf@dfanning.com (David Fanning) wrote:
> Mirko Vukovic (mvukovic@taz.telusa.com) writes:
>
>> I'm runing idl 5.3.1 on windows nt, and cannot access
>> the time and date functions introduced in 5.1.
>>
>> Am I on the correct planet, or have I missed something?.
>
> No, Mirko, you've been in a time warp. Those things
> disappeared in IDL 5.2. Not Y2K compatible, I guess. :-)
>
> Check out the Label_Date function. And there are some
> neat new things in IDL 5.4 (a TimeGen function, for
> example). I think most everyone though is using the
> date/time functions available on either the Johns
> Hopkins Applied Physics Lab or NASA Astronomy ftp
> sites.
thanks,
hm, I saw nothing in the list of obsolete routines.
Thanks for the pointer to the other libraries. As for
5.4, well, some of us are mere mortals :-)
have a good weekend
Mirko
Sent via Deja.com http://www.deja.com/
Before you buy.
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| Re: what happened to time/date functions? [message #21593 is a reply to message #21591] |
Fri, 01 September 2000 09:48 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Mirko Vukovic (mvukovic@taz.telusa.com) writes:
> I'm runing idl 5.3.1 on windows nt, and cannot access
> the time and date functions introduced in 5.1.
>
> Am I on the correct planet, or have I missed something?.
No, Mirko, you've been in a time warp. Those things
disappeared in IDL 5.2. Not Y2K compatible, I guess. :-)
Check out the Label_Date function. And there are some
neat new things in IDL 5.4 (a TimeGen function, for
example). I think most everyone though is using the
date/time functions available on either the Johns
Hopkins Applied Physics Lab or NASA Astronomy ftp
sites.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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