Re: [Gnuplot-py-users] Re: Gnuplot python question - using TempArrayFile instead of stdin

[Andrew S. <and...@ad...>]

Sorry, my error report was premature -- deleting my old Gnuplot module  
before re-installing fixes the problem.

And I now have working mouse zoom!  Unfortunately, I cannot get this to  
work with fifos -- it seems the "file" is unlinked immediately after  
gnuplot gets it the first time, and gnuplot wants it again when trying  
to zoom.  Here's the output when I put debug=1:

gnuplot> set mouse
gnuplot> set term x11
gnuplot> set yrange [-5:20]
gnuplot> set xlabel "Time (seconds)"
gnuplot> set ylabel "Response (mV)"
gnuplot> plot '/tmp/@20093.0' title "1115: 2000-03-06 17:23:09" with  
lines

gnuplot> plot '/tmp/@20093.0' title "1115: 2000-03-06 17:23:09" with  
lines
               ^
          can't read data file "/tmp/@20093.0"
          line 0: (No such file or directory)

The second call to plot is done on an attempted mouse zoom.

The same thing does work when fifos and inline are off, although in  
that case, plot is not called a 2nd time. Perhaps the 2nd call to plot  
with fifos is a gnuplot OS X oddity?

Anyhow, mouse zooming works for me, so I'm happy!

Cheers!
Andrew

On Wednesday, February 5, 2003, at 12:38  AM, Andrew Straw wrote:

> It sounds good...  However, I just did a CVS checkout, build, and  
> install and got the following:
>
> >>> import Gnuplot
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File  
> "/Library/Frameworks/Python.framework/Versions/2.2/lib/python2.2/site- 
> packages/Gnuplot/__init__.py", line 177, in ?
>     from PlotItems import PlotItem, Func, File, Data, GridData
>   File  
> "/Library/Frameworks/Python.framework/Versions/2.2/lib/python2.2/site- 
> packages/Gnuplot/PlotItems.py", line 374, in ?
>     if gp.GnuplotOpts.support_fifo:
> AttributeError: class GnuplotOpts has no attribute 'support_fifo'
>
> (I'll dig farther, but this is what I got to tonight.)
>
> Cheers!
> Andrew
>
> On Tuesday, February 4, 2003, at 03:09  AM, Michael Haggerty wrote:
>
>> Andrew,
>>
>> Andrew Straw <and...@ad...> wrote:
>>> First of all, a big thanks for contributing Gnuplot.py!  I use it
>>> all the time, as I'm sure countless others do.
>>
>> Thanks for the kind words.
>>
>>> Now a question -- is there a way to pipe data through a
>>> Gnuplot.PlotItems.TempArrayFile by default?  I ask because on my
>>> machine (Mac OS X 10.2.3 with gnuplot 3.8h0), the 'set mouse' on the
>>> x11 terminal only works when the data is available in such a file.
>>>
>>> I vaguely seem to recall another version of Gnuplot (I'm using 1.6)  
>>> did
>>> this.  (I remember lots of /tmp/@1234132.1 files.)  I did find in the
>>> gp_macosx.py file a "prefer_inline_data" variable, which I have set  
>>> to
>>> 1, to no avail.
>>
>> That's funny; I thought that in version 1.6 temporary files were still
>> the default for Mac OS X.
>>
>> In any case, in the current CVS version, FIFOs are used by default to
>> send data to gnuplot on platforms that support them, including Mac OS
>> X.  In the CVS version, if you set the following options in
>> gp_macos.py, then you should get temporary files by default:
>>
>>     prefer_inline_data = 0
>>     prefer_fifo_data = 1
>>
>> You can obtain the CVS version from sourceforge; instructions are
>> available one or two clicks from the Gnuplot.py project page,
>>
>>     http://sourceforge.net/projects/gnuplot-py/
>>
>> Also from the sourceforge project page you can find instructions how
>> to join our mailing list, which is a good place to submit such
>> questions and discussion.  (I have forwarded a copy of this email to
>> the mailing list.)
>>
>> Michael
>>
>> --
>> Michael Haggerty
>> hag...@jp...
>>
>
>
>
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