comp.lang.idl-pvwave archive: archive » HDF_SD_START: Invalid HDF file or filename: problem related to network issues

Home » Public Forums » archive » HDF_SD_START: Invalid HDF file or filename: problem related to network issues

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: HDF_SD_START: Invalid HDF file or filename: problem related to network issues [message #86280 is a reply to message #86278]

Tue, 22 October 2013 11:37

Andy Sayer
Messages: 127
Registered: February 2009

Senior Member

Hi Rob :)

This has happened to me a lot so I'm also interested if there's a solution... I normally manually copy-paste the line the code failed on, and then type .continue after to resume it. It works, but requires manual intervention.

Andy

On Tuesday, October 22, 2013 2:06:50 PM UTC-4, Robert Levy wrote:
> Hi all,
>
> I am a group newbie, so i apologize if a solution exists but I didn't find.
>
>
>
> Anyway, I am running a giant script to read thousands of MODIS HDF data files, which the files are located on a LVES mount (data are virtually mounted through a network).
>
>
>
> So the problem seems to be that there are occasional network "blips" that happen. For example, I run these command:
>
>
>
> 1) determine that the file exists and is a proper HDF file
>
> fileHandle = HDF_OPEN(Filename, /READ )
>
> IF fileHandle LT 1 THEN BEGIN
>
> errorLevel = 1
>
> Return, errorLevel
>
> ENDIF
>
> HDF_CLOSE, fileHandle
>
>
>
>
>
> 2) Then I go and actually open the file:
>
>
>
> hdfid = HDF_SD_START(Filename, /READ)
>
>
>
>
>
> This is where the code bombs and gives me:
>
> HDF_SD_START: Invalid HDF file or filename
>
>
>
> and stops my whole code. This file exists and is a perfectly fine file.
>
>
>
>
>
> Note that this may happen after the code is running for days (opening and closing files). If I try a second later, it works fine. Is there any way to have HDF_SD_START exit gracefully, and return an error code, rather than stop with error message? Then I could know it is a network problem and try again a few seconds later.
>
>
>
> Thanks for any ideas.
>
>
>
> -Rob

Report message to a moderator

[Message index]

		HDF_SD_START: Invalid HDF file or filename: problem related to network issues By: Robert Levy on Tue, 22 October 2013 11:06
		Re: HDF_SD_START: Invalid HDF file or filename: problem related to network issues By: Andy Sayer on Tue, 22 October 2013 11:37
		Re: HDF_SD_START: Invalid HDF file or filename: problem related to network issues By: David Fanning on Tue, 22 October 2013 11:44
		Re: HDF_SD_START: Invalid HDF file or filename: problem related to network issues By: Carsten Lechte on Wed, 23 October 2013 02:05
		Re: HDF_SD_START: Invalid HDF file or filename: problem related to network issues By: xin.xi30 on Wed, 20 January 2016 13:33

Previous Topic:	8 byte to double?
Next Topic:	Interesting results when using IMAGE function

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 17:54:59 PDT 2025

Total time taken to generate the page: 0.00242 seconds