[volt-nuts] do you like Labview in your labs?

Chuck Harris cfharris at erols.com
Sat Dec 4 15:34:54 UTC 2010

You can also use the same openVISA layer with scilab, python, octave, c++, ...
essentially all other open source languages and packages.  So things are
pretty nice for GPIB users in open source land... much nicer than in 'doze
land.  If only because you don't have to ask anyone's permission to make
changes that make things work better for your needs.

For those that think python is impossible to use, here is a snippet that
will read from your keithley voltmeter:

import visa
keithley = visa.instrument("GPIB::12")
print keithley.ask("*IDN?")

There are many dozens of instruments that have support already in the library,
and adding additional instruments is pretty trivial.

Plotting is as simple as using the python graph function.

Here is another package called pyVlab, which is a python based clone of


I can't for the life of me understand why anyone would set up their tent
in NI labview land.

-Chuck Harris

Ivan Cousins wrote:
> Some may not be aware that there is an alternative to the NI VISA layer
> that is open source
> (GNU General Public License).
> I use it with GNU octave as an alternative to Labwindows-Labview.
> I like open source tools on linux so they can be changed if needed.
> On the web page it is mentioned:
> "You might be interested that your vxi11 package can be compiled on
> Cygwin/Windows."
> I have not tried this.
> VXI11 Ethernet Protocol for Linux at:
> http://optics.eee.nottingham.ac.uk/vxi11/
> <http://optics.eee.nottingham.ac.uk/vxi11/>
> John C.
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