content of binary files stored by save

[TorokLev]

Hi all,

Does anybody know if file content can be listed?
I mean, once I saved a file with "save" command,
I want to know what variables are stored in it.
For example:

a=2;
b=4;
save -binary context.dat

restarting octave

load context.dat


I am particularily interested of this because loading from binary format is extremely
much faster so it is perfereble to use it.
However in a case of mine it is a bit larger. Which is either an error or I saved something that I didn't want to save.

Lev

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From: Levente Torok <toroklev@...>

Hi all,

Does anybody know if file content can be listed?
I mean, once I saved a file with "save" command, I want to know what variables are stored in it.

Lev

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[David Bateman]

Levente Torok wrote:

> Hi all,
>
> Does anybody know if file content can be listed?
> I mean, once I saved a file with "save" command,
> I want to know what variables are stored in it.
> For example:
>
> a=2;
> b=4;
> save -binary context.dat
>
> restarting octave
>
> load context.dat
>
>
> I am particularily interested of this because loading from binary format is extremely
> much faster so it is perfereble to use it.
> However in a case of mine it is a bit larger. Which is either an error or I saved something that I didn't want to save.
>
> Lev
>
>  

If its large does the "-z" flag to save help?

As for listing the contents, matlab has the "whos -file <file.mat>"
command that Octave does yet implement. I took a look at adding this a
few months ago, but if I remember correctly it wasn't clear how to do it
cleanly. Till then Octave implements "load -list <file.mat>" which is
similar that lists the contents without loading the variables, but
doesn't give any details like "whos -file <file.mat>" does..

Regards
David



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[David Bateman]

David Bateman wrote:

> Levente Torok wrote:
>> Hi all,
>>
>> Does anybody know if file content can be listed?
>> I mean, once I saved a file with "save" command, I want to know what
>> variables are stored in it.
>> For example:
>>
>> a=2;
>> b=4;
>> save -binary context.dat
>>
>> restarting octave
>>
>> load context.dat
>>
>>
>> I am particularily interested of this because loading from binary
>> format is extremely
>> much faster so it is perfereble to use it.
>> However in a case of mine it is a bit larger. Which is either an
>> error or I saved something that I didn't want to save.
>>
>> Lev
>>
>>  
>
> If its large does the "-z" flag to save help?
>
> As for listing the contents, matlab has the "whos -file <file.mat>"
> command that Octave does yet implement. I took a look at adding this a
> few months ago, but if I remember correctly it wasn't clear how to do
> it cleanly. Till then Octave implements "load -list <file.mat>" which
> is similar that lists the contents without loading the variables, but
> doesn't give any details like "whos -file <file.mat>" does..
>
> Regards
> David
>
>
>

Sorry you can also do "load -list -v <file.mat>", though that doesn't
appear t be adapted to NDArrays.

D.


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91193 Gif-Sur-Yvette FRANCE                  [phone] (Fax)

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[Francesco Potortì]

>Does anybody know if file content can be listed?
>I mean, once I saved a file with "save" command,
>I want to know what variables are stored in it.
>For example:
>
>a=2;
>b=4;

octave> save -binary context.dat a b

octave> fieldnames(load("context.dat"))
ans =

{
  [1,1] = a
  [2,1] = b
}

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