| Re: How to solve this problem? [message #34719] |
Tue, 15 April 2003 10:28 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Big Bird (condor@biosys.net) writes:
> Some people (like me) only scan newsgroups occasionally, when we have
> a minute
Get out!! How can you do that!?
If I don't read the newsgroup every 10 minutes my hands
start shaking and I get an itch right between my shoulder
blades. My eyes start to burn at about 15 minutes.
I've considered drugs, but with my addictive personality
I don't think it would be a good idea.
Cheers,
David
P.S. Let's just say you guys who work in an office
probably have plenty of pretty co-workers to interact
with. I'm just stuck here with myself, still in my
pajamas, scratching myself and staring at a computer screen ...
I've really got to get a life. :-(
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
|
|
|
|
| Re: How to solve this problem? [message #34720 is a reply to message #34719] |
Tue, 15 April 2003 10:14  |
condor
Messages: 35
Registered: January 2002
|
Member |
|
|
"tomson" <tom2959@21cn.com> wrote in message news:<b75cmt$1ebn$1@mail.cn99.com>...
> for i=0,n_elements(y)-1 do begin
> .......
> endfor
>
>
> ERROR MESSAGE:
> Loop limit expression too large for loop variable type.
> <LONG ( 60214)>.
>
> But my program cannot do without that loop.
Others have replied to the issue at hand, but here's a general hint:
Some people (like me) only scan newsgroups occasionally, when we have
a minute, and at least I personally find it annoying when the subject
line of an article reads "help" or "I have a problem" or "How to solve
this problem?" -- it means that I have to retrieve that article and
read through it before I even know whether I am qualified to answer
it. Maybe it's about something I don't understand myself, and then it
seems it would be polite to give me at least a hint what you're
talking about in the subject line so I don't have to read your article
in the first place.
Had you chosen the error message itself as a "subject" ("Loop limit
expression too large for loop variable type") every reader of the
group would've known what your postis about and whether they know the
answer.
Even better: If you copy/paste the full error message into the
google-news interface
at http://groups.google.com/groups?group=comp.lang.idl-pvwave
you'll get the answer to your problem without even having to post. I
find this to be a good first step with all kinds of computer-related
questions, as it gives me a bit of an idea how common the problem at
hand is -- have others encountered it, how did they proceed, what
advice was given to them etc. Even if my question can't be answered
that way, I often find a useful hint that helps me solve my problem
myself.
|
|
|
|
| Re: How to solve this problem? [message #34723 is a reply to message #34720] |
Tue, 15 April 2003 07:12 |
Ken Knapp
Messages: 14
Registered: April 2003
|
Junior Member |
|
|
tomson wrote:
>
> for i=0,n_elements(y)-1 do begin
> .......
> endfor
It looks like it sets i to an integer, whereas it should be a long for
such a large number, so try:
for i=0l,n_elements(y)-1 do begin
.......
endfor
[that problem got me a while back and I panicked at first too]
Hope this helps.
-Ken
--
<>< <>< <>< <>< <>< <>< <>< <><
Kenneth Knapp CIRA Visiting Scientist
NOAA/NESDIS/ORA Ken.Knapp@noaa.gov
E/RA1, RM 711C, WWBG Phone:301-763-8053x195
5200 Auth Rd. Fax:301-763-8108
Camp Springs, MD 20746-4304
|
|
|
|
| Re: How to solve this problem? [message #34752 is a reply to message #34723] |
Thu, 10 April 2003 20:39 |
Mark Hadfield
Messages: 783
Registered: May 1995
|
Senior Member |
|
|
"tomson" <tom2959@21cn.com> wrote in message
news:b75cmt$1ebn$1@mail.cn99.com...
> for i=0,n_elements(y)-1 do begin
> .......
> endfor
>
>
> ERROR MESSAGE:
> Loop limit expression too large for loop variable type.
> <LONG ( 60214)>.
>
> But my program cannot do without that loop.
Change it to
for i=0L,n_elements(y)-1 do ...
or add the following declaration to the beginning of your code
compile_opt DEFINT32
When you set i to 0 at the beginning of the loop, this makes i a short
(16-bit) integer *unless* you explicitly specify a long integer (0L) or you
tell IDL that you want your default integer type to be long (32-bit). Short
integers can't go past 32767
---
--
Mark Hadfield "Ka puwaha te tai nei, Hoea tatou"
m.hadfield@niwa.co.nz
National Institute for Water and Atmospheric Research (NIWA)
|
|
|
|
| Re: How to solve this problem? [message #34753 is a reply to message #34752] |
Thu, 10 April 2003 20:36 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
tomson (tom2959@21cn.com) writes:
> for i=0,n_elements(y)-1 do begin
> .......
> endfor
>
>
> ERROR MESSAGE:
> Loop limit expression too large for loop variable type.
> <LONG ( 60214)>.
>
> But my program cannot do without that loop.
Make your loop variable a long integer:
FOR I=0L, N_Elements(y)-1 DO BEGIN
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
