I am thinking about writing a program which will involve, among other
things, displaying a plot of a series of numbers.  The idea is that
you could click on the points and move them to change the numbers.
Reverse-plotting, I suppose.  It need not be complex; the numbers
will all be zero or one, and it's only necessary to flip the bits, so
click-and-drag is seriously overkill.  Really it would be better to
just double-click on a point to switch it from one value to the other.

Can anyone point me in the right direction?  I have written some
programs in python before, including TKinter, but this new project is
beyond the point that I know where to even start looking.  :)

In case you care, the application is in functional brain imaging; the
brain scans generate a certain number of time points (say 500) and
then the motion of the subject is also calculated.  Standard practice
is to generate a "censor" file composed of zeros and ones, where zero
indicates that that time point had excessive motion and must be
disregarded.  I want to display a graph of the motion over time, and
allow quick and easy interactive editing of the censor time series in
visual parallel to the motion graph.  This would save a lot of time;
at present everyone does this in Excel, which being a horrible
Windows program can't be integrated into the predominantly UNIX-based
processing pipeline.  And in any case, it requires manually typing
all the zeros, looking back and forth between the graph of motion and
the list of numbers.

I have already written a program to algorithmically generate the
censor time series from the motion data, but it is absolutely
essential to be able to manually double-check and if necessary make
minor edits.  I'd like to be able to keep that functionality in
Python rather than sending everyone back to Excel...  if possible!

Thanks very much for any help.

--
-dave----------------------------------------------------------------
"Pseudo-colored pictures of a person's brain lighting up are
undoubtedly more persuasive than a pattern of squiggles produced by a
polygraph.  That could be a big problem if the goal is to get to the
truth."  -Dr. Steven Hyman, Harvard



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Thanks again,

 

Still lost, even with watching the variables.  I see that it kicks out of the loop, but don't understand what I have done to cause this.  I'm sorry for repeated emails, but I have spent multiple days on this.  I have added another while loop that I think should work, but I can't seem to keep it in the while loop.  I feel like I am getting close.

 

It seems like it gets everything at the first level , but not the way I expected.  It seems to get the first value inside the first while loop, and then goes outside the loop to get the next three.  I would have expected it to return the values as it goes through the first while loop (since they are at the same level), then when it sees the nested identifier, go into the second while loop and return values.

 

Any insight would be wonderful.

 

def parseSequence(data, start):

    group_num = data[start:start+2]
    element_num = data[start+2:start+4]
    vl_field = data[start+4:start+8]
    length = struct.unpack('hh', vl_field)[0]
    value = data[start+8:(start+8+length)]
    pos = start+8+length
    element = (group_num+element_num)

    if element == '\xfe\xff\x00\xe0':

        data = value

        while start < 536: #length:  # 536

            group_num = data[start:start+2]
            element_num = data[start+2:start+4]
            vl_field = data[start+4:start+8]
            length = struct.unpack('hh', vl_field)[0]
            value = data[start+8:(start+8+length)]

            start = start+8+length

            element = (group_num+element_num)

            if element == '\xfe\xff\x00\xe0':

                data = value
                while start < 112: #length:  # 112, 112, 116, 116

                    group_num = data[start:start+2]
                    element_num = data[start+2:start+4]
                    vl_field = data[start+4:start+8]
                    length = struct.unpack('hh', vl_field)[0]
                    value = data[start+8:(start+8+length)]

                    start = start+8+length

                    element = (group_num+element_num)

                    return element, start, value

            else:
                return element, start, value                

    else:
        return  element, pos, value

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Every five lines of the raw email, the headers, or the body?

A text file is just data.  You can navigate however you like, but you need to
choose a model, to give it some structure for you to work with,  Navigating
around at the byte level is probably going to be tedious, error prone, and
not very useful anyway.  Choosing five lines at a time is probably not going
to be much better.  There's no particular reason it can't be ten lines, or
two, unless you pick a model that

Maybe we could help more if you showed us what this "original script" is.  We
can help you pick a better model if the one implicit in your script isn't
working for you.

Also, you should probably reply to the mailing list.
I'll be more careful about the reply-to field from now on.

Cheers

On Monday 31 March 2008 14:43, you wrote:
> the mail module seems interesting.  but what  I was thinking of some way
> that would work on only five lines then moves to the next five lines & so
> on ... is that possible ? is there a way of navigating a text file ?
> process the line that we want,  maybe delete it or maybe add text to it &
> then save & close the file ?
>
>
> On Fri, Mar 28, 2008 at 1:08 PM, Chris Fuller
> <cfuller084 <at> thinkingplanet.net>
>
> wrote:
> > The email and mailbox modules might help you out.  Multiple email
> > messages will probably parse as an mbox format mailbox.
> >
> > http://docs.python.org/lib/module-email.html
> > http://docs.python.org/lib/module-mailbox.html
> >
> > Cheers
> >
> > On Friday 28 March 2008 03:14, linuxian iandsd wrote:
> > > good morning everybody !
> > >
> > > I have scripted a small program to parse a 5 lines email message as it
> > > comes in to my inbox (this is handled by procmail & here is a wonderful
> > > intro to it : http://linuxfocus.org/English/November1997/article8.html)
> > >
> > > so every email is being parsed & information is extracted from it.
> > >
> > > but sometimes two or more emails come in at once so the input file that
> >
> > my
> >
> > > python script has to parse is more than five lines !! my question is
> > > how
> >
> > do
> >
> > > i effeciently manage this from within my original script.
> > >
> > > thanks
> >
> > _______________________________________________
> > Tutor maillist  -  Tutor <at> python.org
> > http://mail.python.org/mailman/listinfo/tutor