Re: Porting Gnuplot to Trolltech Qt

[Sebi35 <bob...@ho...>]

First, thank you both for your quick answers :)

> It is not clear exactly what you want to present to the user inside
> this widget.  Are you proposing to develop a GUI that controls gnuplot?
> Or are you proposing a Qt-based output widget that contains the
> plots created by gnuplot?  Both?  Something else? 

Both in fact. For example, I'd like to develop a GUI to plot only simple
sinus functions and I want the result to be in a Qt Widget. 

I think I'll look at the example script you were talking about Ethan. 

> But gnuplot is fast and easily scripted.  As a "third party" 
> programmer, even if you're not using pipes you can, for example, 
> get gnuplot to generate a PNG file then display that file inside a 
> window created using the widget set of your choice, and arrange 
> suitable feedback to gnuplot via your own menus.

Yes, could be a good idea to start with.

I'll try all that and I let you know.

Sebastien




Allin Cottrell wrote:
> 
> On Thu, 24 Jan 2008, Sebi35 wrote:
> 
>> I've been working a lot with Qt and I often have to use plot 
>> functions. I've recently discovered the power of Gnuplot and I'd 
>> like to encapsulate gnuplot in a Qt widget. Is that possible? 
>> What is the best to do this?
> 
> Presumably you could model a Qt terminal on the wxt terminal in 
> current CVS gnuplot.  Along similar lines, I'm tempted to try 
> writing a GTK terminal that does not depend on the additional 
> wxWidgets layer.
> 
>> I have read all the docs of the gnuplot distribution, and I feel 
>> like if I code a "Qt" terminal, the widget will only be 
>> reachable through the gnuplot application. Is there anyway to 
>> use Gnuplot as a library?
> 
> As Ethan says, No.  This possibility has been discussed in the 
> past, but gnuplot is still dependent on a large number of global 
> variables; it doesn't have the modularity that would be required 
> of a plotting library.  
> 
> But gnuplot is fast and easily scripted.  As a "third party" 
> programmer, even if you're not using pipes you can, for example, 
> get gnuplot to generate a PNG file then display that file inside a 
> window created using the widget set of your choice, and arrange 
> suitable feedback to gnuplot via your own menus.
> 
> Allin Cottrell
> 
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