discuss: flowcharts


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Subject: Re: Flowcharts
From: Alex Nordstrom ####@####.####
Date: 8 Apr 2005 19:31:07 -0000
Message-Id: <200504090329.09944.lx@se.linux.org>

On Sat, 9 Apr 2005 03:00, Machtelt Garrels wrote:
> One of the remarks about the flowcharts
> (tille.xalasys.com/training/tldp/flowcharts.php) was that the images
> were huge.  I tried to scale them with gimp, and now they are even
> bigger:
>
> images...

True, but there may be fewer compression opportunities for the png 
algorithms given the smaller uniformly coloured areas and greater 
percentage of transitional areas owing to antialiasing. You may wish to 
run the files through pngcrush for more efficient compression:

   Recompressing tldp-publishing-flowchart-small.png
   Total length of data found in IDAT chunks   =    90179
   IDAT length with method   1 (fm 0 zl 4 zs 0)=    72925
   IDAT length with method   2 (fm 1 zl 4 zs 0)=    89110
   IDAT length with method   3 (fm 5 zl 4 zs 1)=    93272
   IDAT length with method   4 (fm 0 zl 9 zs 1)=    74422
   IDAT length with method   7 (fm 0 zl 9 zs 0)=    68122
   Best pngcrush method = 7 for tldp.png (24.54% reduction)

-- 
Alex Nordstrom
http://lx.n3.net/
Please do not CC me in followups;
I am subscribed to the tldp discussion list.

--> -->
 
 
<type 'exceptions.IOError'>
Python 2.5.2: /usr/bin/python
Fri Jul 5 19:46:00 2024

A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.

 /opt/ezmlm-browse-0.20/<string> in ()
 /opt/ezmlm-browse-0.20/main.py in main()
  424 
  425         if path is not None:
  426                 main_path(path)
  427         else:
  428                 main_form()
global main_form = <function main_form at 0x8367c6c>
 /opt/ezmlm-browse-0.20/main.py in main_form()
  378         except ImportError:
  379                 die(ctxt, "Invalid command")
  380         module.do(ctxt)
  381 
  382 def main():
module = <module 'commands.showmsg' from '/opt/ezmlm-browse-0.20/commands/showmsg.pyc'>, module.do = <function do at 0x83715a4>, global ctxt = {'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}
 /opt/ezmlm-browse-0.20/commands/showmsg.py in do(ctxt={'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'})
   18         write(html('msg-pager') % ctxt)
   19         write('<hr>')
   20         sub_showmsg(ctxt, ctxt[MSGNUM])
   21         write('<hr>')
   22         write(html('msg-pager') % ctxt)
global sub_showmsg = <function sub_showmsg at 0x83671ec>, ctxt = {'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, global MSGNUM = 'msgnum'
 /opt/ezmlm-browse-0.20/globalfns.py in sub_showmsg(ctxt={'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, msgnum=9226)
  229         format_timestamp(ctxt, ctxt)
  230         write(html('msg-header') % ctxt)
  231         rec_showpart(ctxt, msg, 0)
  232         write(html('msg-footer') % ctxt)
  233         ctxt.pop()
global rec_showpart = <function rec_showpart at 0x83671b4>, ctxt = {'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, msg = <email.message.Message instance at 0x83c4d2c>
 /opt/ezmlm-browse-0.20/globalfns.py in rec_showpart(ctxt={'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part=<email.message.Message instance at 0x83c4d2c>, partnum=1)
  205                 else:
  206                         for p in part.get_payload():
  207                                 partnum = rec_showpart(ctxt, p, partnum+1)
  208         else:
  209                 write(html('msg-sep') % ctxt)
partnum = 1, global rec_showpart = <function rec_showpart at 0x83671b4>, ctxt = {'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, p = <email.message.Message instance at 0x83c4bec>
 /opt/ezmlm-browse-0.20/globalfns.py in rec_showpart(ctxt={'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part=<email.message.Message instance at 0x83c4bec>, partnum=2)
  208         else:
  209                 write(html('msg-sep') % ctxt)
  210                 sub_showpart(ctxt, part)
  211         return partnum
  212 
global sub_showpart = <function sub_showpart at 0x8367144>, ctxt = {'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part = <email.message.Message instance at 0x83c4bec>
 /opt/ezmlm-browse-0.20/globalfns.py in sub_showpart(ctxt={'cmd': 'showmsg', 'threadidx': 2, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part=<email.message.Message instance at 0x83c4bec>)
  164         type = ctxt[TYPE] = part.get_content_type()
  165         ctxt[FILENAME] = part.get_filename()
  166         template = html('msg-' + type.replace('/', '-'))
  167         if not template:
  168                 template = html('msg-' + type[:type.find('/')])
global template = <function template at 0x835fe9c>, global html = <function html at 0x835fed4>, type = 'application/pgp-signature', type.replace = <built-in method replace of str object at 0x83cae20>
 /opt/ezmlm-browse-0.20/globalfns.py in html(name='msg-application-pgp-signature')
   40 
   41 def html(name):
   42         return template(name + '.html')
   43 
   44 def xml(name):
global template = <function template at 0x835fe9c>, name = 'msg-application-pgp-signature'
 /opt/ezmlm-browse-0.20/globalfns.py in template(filename='msg-application-pgp-signature.html')
   31         except IOError:
   32                 if not _template_zipfile:
   33                         _template_zipfile = zipfile.ZipFile(sys.argv[0])
   34                 try:
   35                         f = _template_zipfile.open(n).read()
global _template_zipfile = None, global zipfile = <module 'zipfile' from '/usr/lib/python2.5/zipfile.pyc'>, zipfile.ZipFile = <class zipfile.ZipFile at 0x82f8a7c>, global sys = <module 'sys' (built-in)>, sys.argv = ['-c', '/opt/ezmlm-browse-0.20']
 /usr/lib/python2.5/zipfile.py in __init__(self=<zipfile.ZipFile instance at 0x8374a6c>, file='-c', mode='r', compression=0, allowZip64=False)
  337             self.filename = file
  338             modeDict = {'r' : 'rb', 'w': 'wb', 'a' : 'r+b'}
  339             self.fp = open(file, modeDict[mode])
  340         else:
  341             self._filePassed = 1
self = <zipfile.ZipFile instance at 0x8374a6c>, self.fp = None, builtin open = <built-in function open>, file = '-c', modeDict = {'a': 'r+b', 'r': 'rb', 'w': 'wb'}, mode = 'r'

<type 'exceptions.IOError'>: [Errno 2] No such file or directory: '-c'
      args = (2, 'No such file or directory')
      errno = 2
      filename = '-c'
      message = ''
      strerror = 'No such file or directory'