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skip binary data

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  skip binary data Kurt Sterau <kurt.sterau@trash-mail.com> - 2012-10-29 17:06 +0100
    Re: skip binary data sfeam <sfeam@users.sourceforge.net> - 2012-10-29 10:58 -0700
      Re: skip binary data Kurt Sterau <kurt.sterau@trash-mail.com> - 2012-10-29 20:26 +0100
        Re: skip binary data Kurt Sterau <kurt.sterau@trash-mail.com> - 2012-10-29 21:39 +0100

#1444 — skip binary data

Hi,

I plot some binary data:

plot 'data.bin' binary format='%int8' u ($0):($1) with line lt 1

This works as expected, but unfortunately the file has 2507 Bytes and I
have to skip the first 6 Bytes und the last one. Only 2500 Bytes are of
interest. Can this be achieved within gnuplot 4.6 patchlevel 0 on Linux?
Or is there any other tool to achieve this?

-- 
Kurt

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#1447

Kurt Sterau wrote:

> Hi,
> 
> I plot some binary data:
> 
> plot 'data.bin' binary format='%int8' u ($0):($1) with line lt 1
> 
> This works as expected, but unfortunately the file has 2507 Bytes and I
> have to skip the first 6 Bytes und the last one. Only 2500 Bytes are of
> interest. Can this be achieved within gnuplot 4.6 patchlevel 0 on Linux?
> Or is there any other tool to achieve this?


   help binary skip

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#1450

>> plot 'data.bin' binary format='%int8' u ($0):($1) with line lt 1
>> 
>> This works as expected, but unfortunately the file has 2507 Bytes and I
>> have to skip the first 6 Bytes und the last one. Only 2500 Bytes are of
>> interest. Can this be achieved within gnuplot 4.6 patchlevel 0 on Linux?
>> Or is there any other tool to achieve this?
>
>
>    help binary skip

plot 'data.bin' binary skip=6 format='%int8' u ($0):($1) with line lt 1

The first 6 Bytes are skipped now, thanks. But what about the last byte?
How can I suppress this?

-- 
Kurt

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#1452

> plot 'data.bin' binary skip=6 format='%int8' u ($0):($1) with line lt 1
>
> The first 6 Bytes are skipped now, thanks. But what about the last byte?
> How can I suppress this?

plot 'data.bin' binary record=2500 skip=6 format='%int8' u ($0):($1)
with line lt 1

This does now what I want, but I don't understand why...

-- 
Kurt

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