Re: [GD-DEVEL] Re: plotting data c++

On Wednesday 30 January 2008 15:15, Patolfo wrote:
> ok guys here is the problem again, i am plotting x,y data, floats to be 
> precise, must be in C, C++, the hardway, no perl or python just know how 
> to us perl a little, the idea is to have the application data to do the 
> approximation of a square wave by means of fourier series, the job is 
> done, now the problem is the gui, well i tried tk with perl and 
> everything went smootly, till the part of converting perl to C, and 
> including the interpreter and all that stuff, truly i did not get it 
> right so it freezes and is buggy, so well back in track i found my self 
> on the same road, just C, the gui I plan to do them with windowsapi they 
> are the lesser problem, mingw, but the plotting data per se is the
> biggest problem, i tried reading the wiki for libgd, and let me tell you 
> it is not for noobs, or at least not for the dumbest as me.

Do I understand correctly that you know exactly what you want to plot,
but are looking for a way to get it onto the screen?
Perhaps you could let gnuplot take care of that for you.
You can drive gnuplot by sending it plot commands through a pipe,
or by creating a script file for it to run.

Many demo plots available online at
    http://gnuplot.sourceforge.net/demo/

	Ethan

> 
> The algorithm says more or less:
> number or harmonics, number of data points, using gui, some routines, 
> and then we have and arbitrary number of data with a max value of 1 and 
> the minimum of 0, arranged in pairs of x,y,
> 
> i have the suspicion it is straightforward, but i seem to fail, i am 
> still googling, found koolplot, which i think uses libgd, did not work 
> for my mingw, so, any directions where to look...
> 

-- 
Ethan A Merritt