Re: [Gnuplot-py-users] Passing the Value of a Variable to Gnuplot-py

[Richard B. L. <la...@un...>]

Thanks, Michael. Works!
-- Richard

On Tuesday, December 10, 2013,344, at 3:53 AM, Michael Haggerty wrote:

> On 12/10/2013 04:54 AM, Richard Langley wrote:
>> In a Python script, I compute the value of a variable. Let's call it
>> cep. I then want to draw a circle whose radius is cep. I would like to
>> have something like
>> 
>> cep = (some calculation producing a float value)
>> g('set parametric')
>> g('set trange [0:2*pi]')
>> g('fx(t) = cep*cos(t)')
>> g('fy(t) = cep*sin(t)')
>> e = Gnuplot.Func('fx(t),fy(t)')
>> g.plot(e)
>> 
>> but that doesn't work, it seems, as gnuplot doesn't know the value
>> of cep ("undefined variable: cep"). So how does one pass an arbitrary
>> variable value to gnuplot-py?
> 
> g('cep = %s' % (cep,))
> 
> There is no shortcut for this, but it wouldn't be difficult to build one.
> 
> Michael
> 
> -- 
> Michael Haggerty
> mh...@al...
> http://softwareswirl.blogspot.com/

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