El 16.02.2011, a las 15:58, Chris Marshall escribió:
> On 2/16/2011 8:48 AM, Arturo Narros González wrote:
> >
> > Thanks for the answer, I would put with verbose flag
> > and lets see.
> Please be sure to cc the perldl list with your
> replies so that others can benefit and contribute
> from the discussion.
Thanks, you are right. I forgot..... (new). :-)
> > I know I can use rcols(). Actually, I tried to read
> > the same information in a file with 100 columns. In
> > theory it is possible because rcols() read all the
> > columns in the file.
>
> You don't say which version of PDL you are using
> but the current release rcols() allows you to
> read in multiple columns into a single pdl using
> [] in the arguments.
I was not using the 5.10 so I have changed and install the newest version of
pdl with pdl2
Thanks again.
I use rcols with this big file and [] in the argument and it works!!!!!!
Thanks a lot.
> > Unfortunately, I could not do it because when I do not
> > specify the columns (it is the way to read all the
> > columns in the file ), just only read the first. That's
> > why I was trying to use rcube.
>
> By default, if no column numbers are given, then
> rcols will read in *all* columns. Again use the []
> syntax to read into a single pdl.
>
Thanks for the advice. I usually use command line because I use a lot of pipes,
but I would take in account your advice.
Thanks for your advices.
Cheers.
Arturo.
> I recommend trying things out in the interactive
> shell (pdl2) as it is easy to cut and paste a
> session into e-mail for questions. It is very
> hard to read perl -e " " one-liners... For example:
>
> $ pdl2
> Perldl2 Shell v0.004
> PDL comes with ABSOLUTELY NO WARRANTY. For details, see the file
> 'COPYING' in the PDL distribution. This is free software and you
> are welcome to redistribute it under certain conditions, see
> the same file for details.
>
> Loaded plugins:
>
> Commands
> Completion
> CompletionDriver::INC
> CompletionDriver::Keywords
> CompletionDriver::LexEnv
> CompletionDriver::Methods
> DDS
> FindVariable
> History
> Interrupt
> LexEnv
> MultiLine::PPI
> NiceSlice
> PDLCommands
> Packages
> PrintControl
> ReadLineHistory
>
>
> Type 'help' for online help
>
> Type Ctrl-D or quit to exit
>
> Loaded PDL v2.4.7_006
>
> load_rcfile: got $HOME = /home/chm
> load_rcfile: loading /home/chm/.perldlrc
> pdl> help rcols
> Module PDL::IO::Misc
> rcols()
> Read specified ASCII cols from a file into piddles and perl arrays
> (also
> see "rgrep()").
>
> For each column number specified, a 1D output PDL will be generated.
> Anonymous arrays of column numbers generate multicolumn output piddles.
> An empty anonymous array as column specification will produce a single
> output data piddle with dim(0) equal to the number of columns
> available.
>
> <...output skipped...>
>
> Usage:
> ($x,$y,...) = rcols( *HANDLE|"filename", { EXCLUDE => '/^!/' },
> $col1, $col2, ... )
> $x = rcols( *HANDLE|"filename", { EXCLUDE => '/^!/' }, []
> )
> ($x,$y,...) = rcols( *HANDLE|"filename", $col1, $col2, ..., {
> EXCLUDE => '/^!/' } )
> ($x,$y,...) = rcols( *HANDLE|"filename", "/foo/", $col1, $col2,
> ... )
>
> e.g.,
>
> $x = PDL->rcols 'file1'; # file1 has only one column of
> data
> $x = PDL->rcols 'file2', []; # file2 can have multiple
> columns, still 1 piddle output
> # (empty array ref spec means
> all possible data fields)
>
> <...output skipped...>
>
> The second example will read all columns into one
> pdl. I suggest making a small test input file
> that you can experiment with reading.
>
> Cheers,
> Chris
>
>>
>> Thanks again.
>>
>> Arturo.
>>
>>
>> El 16.02.2011, a las 03:24, Chris Marshall escribió:
>>
>>> On 2/15/2011 11:08 AM, Arturo Narros González wrote:
>>>>
>>>> I try to read some data using a reader function as:
>>>> sub lector{my $e = rcols "$_[0]",8,{LINES=>"3:-2"};return $e;}
>>>> I tested and it works.
>>>> so I tried to used with rcube as:
>>>>
>>>> perl -MPDL -e '$PDL::IO::Misc::colsep ="\t";sub lector{my $e = rcols
>>>> "$_[0]",8,{LINES=>"3:-2"};return $e;} $m= rcube \&lector, glob("*.conf");'
>>>>
>>>> but I get the next message:
>>>>
>>>> PDL: Dimensions must be positive
>>>> Caught at file -e, line 1, pkg main
>>>>
>>>> I try to see examples with a reader function but I can not find,
>>>> Could anyone help me ?
>>>
>>> I haven't used the rcube routine myself but
>>> a look at the code suggests that it only
>>> works for reading multiple 2-D images into
>>> a 3-D resulting data volume.
>>>
>>> If you set $PDL::verbose = 1 you'll get some
>>> diagnostic output from the rcube() call. Of
>>> course, you can just use rcols() to read in
>>> each data set from your files and place them
>>> in a larger data array yourself. rcube() is
>>> just some shorthand for that.
>>>
>>> Cheers,
>>> Chris
>>
>>
>>
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>>
>>
>
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