Scatter Plot on Xcode Mac OS X

[cppbeginr]

Hello,

I am trying to plot scatter for some sequences generated in C++.
I am using xcode on mac os x to generate those sequences.
As i am relatively new to c++ programming can somebody please guide me regarding how can plot a scatter in xcode on Mac OS X 10.9.2 using c++?
Any advice will be highly appreciated.
Thanks a lot.

[Bdanielz]

Doing a quick Google search I found this.
http://stackoverflow.com/questions/215110/scatter-plots-in-c

I would say using a pre- built tool to do it would be the simplest solution.

hell you could even write your file to a csv and use excel to do it.
http://office.microsoft.com/en-us/excel-help/creating-xy-scatter-and-line-charts-HA001054840.aspx

[Bdanielz]

Found this...
This looks really easy to do.
look at the plotting examples
https://www.softintegration.com/docs/ch/chide/

here is some sample code.

/**********************************************************************
* File: vibration.cpp 
* Display the positions of damped free vibrations of
* overdamped, critical damped, underdamped systems.
* Note: The details about this damped free vibration can be found in
* an exercise in Chapter 6 Functions in the book 
* "C for Engineers and Scientists: An Interpretive Approach"
* by Harry H. Cheng, published by McGraw-Hill, 2009,
* ISBN: 0073376051, ISBN-13: 978-0073376059.
**********************************************************************/
#include <stdio.h>
#include <math.h>
#include <chplot.h>

/* The initial position of the vibration is 4.
   The initial velocity of the vibration is 0 */
double overdamped(double t) {
    return 4.12*exp(-1.57*t) - 0.12*exp(-54.2*t);
}

double criticaldamped(double t) {
    return 4*(1+6*t)*exp(-6*t);
}

double underdamped(double t) {
    return 4.06*exp(-0.5*t)*sin(3*t+1.4);
}

int main() {
    double t0, tf;
    int num = 100;       // number of points for plotting
    CPlot plot;
   
    t0 = 0;
    tf = 10;
    plot.title("Damped Free Vibration");
    plot.label(PLOT_AXIS_X, "time (second)");
    plot.label(PLOT_AXIS_Y, "x");
    plot.func2D(t0, tf, num, overdamped);
    plot.legend("overdamped", 0);
    plot.func2D(t0, tf, num, criticaldamped);
    plot.legend("critically damped", 1);
    plot.func2D(t0, tf, num, underdamped);
    plot.legend("underdamped", 2);
    plot.plotting();
    return 0;
}

[norm b]

I have used Qwt quite a bit: http://qwt.sourceforge.net/index.html
There is a link on that page to a screenshot of a scatter plot. The example code is included in the source.

Qwt forum: http://www.qtcentre.org/forums/23-Qwt
The developer (Uwe) is very active

You will have to download the Qt SDK and then compile compile Qwt yourself though.