11_terminal_ascii_plot.cpp

Quick-start guide for in-terminal ASCII plotting via gnuplot set terminal dumb.

#include <cmath>
#include <iostream>
#include <numerics.hpp>

int main() {
    using namespace num;

    // Generate sample sine wave data
    std::vector<double> x, y;
    for (int i = 0; i <= 60; ++i) {
        double xi = i * 0.1;
        x.push_back(xi);
        y.push_back(std::sin(xi));
    }

    std::cout << "Rendering In-Terminal ASCII Plot (set terminal dumb size 120, 30)...\n\n";

    // 1. Matplotlib-style plotting API rendered directly in terminal ASCII
    plt::plot(x, y, "sin(x)", "lines");
    plt::title("In-Terminal ASCII Waveform Plot");
    plt::xlabel("Time (x)");
    plt::ylabel("Amplitude sin(x)");
    plt::show_dumb(120, 25);

    return 0;
}

Possible output:

                                               In-Terminal ASCII Waveform Plot
       1 +----------------------------------------------------------------------------------------------------------+
         |                *****             ***                +                +                 +                 |
     0.8 |-+            **                     ****                                                               +-|
         |           ***                           **                                                               |
     0.6 |-+       **                                ***                                                          +-|
     0.4 |-+   ****                                     **                                                        +-|
         |    *                                           **                                                        |
     0.2 |-+**                                              **                                                    +-|
         |**                                                  **                                                    |
       0 |-+                                                    *                                                 +-|
         |                                                       ****                                               |
    -0.2 |-+                                                         **                                           +-|
         |                                                             *                                         ***|
    -0.4 |-+                                                            **                                      * +-|
    -0.6 |-+                                                              **                                  **  +-|
         |                                                                  ****                          ****      |
    -0.8 |-+                                                                    ***                    ***        +-|
         |                 +                 +                 +                +  ****           +****             |
      -1 +----------------------------------------------------------------------------------------------------------+
         0                 1                 2                 3                4                 5                 6
                                                          Time (x)

Rendering In-Terminal ASCII Plot (set terminal dumb size 120, 30)...