#include <iostream> #include <vector> #include <string> using namespace std; void svg_begin(double width, double height) { cout << "<?xml version='1.0' encoding='UTF-8'?>\n"; cout << "<svg "; cout << "width='" << width << "' "; cout << "height='" << height << "' "; cout << "viewBox='0 0 " << width << " " << height << "' "; cout << "xmlns='http://www.w3.org/2000/svg'>\n"; } void svg_end() { cout << "</svg>\n"; } void svg_text(double left, double baseline, string text) { cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>"; } void svg_rect(double x, double y, double width, double height, string stroke, string fill){ cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << "' />"; } void show_histogram_svg(const vector<double>& bins) { const auto IMAGE_WIDTH = 400; const auto IMAGE_HEIGHT = 300; const auto TEXT_LEFT = 20; const auto TEXT_BASELINE = 20; const auto TEXT_WIDTH = 50; const auto BIN_HEIGHT = 30; const auto BLOCK_WIDTH = 10; double average = 0, sum =0, scale=1; const auto MAX_WIDTH = (IMAGE_WIDTH - TEXT_WIDTH); double sum = 0; double max_count = (bins[0] * BLOCK_WIDTH); for (double bin: bins){ if ((bin * BLOCK_WIDTH) > max_count) { max_count = (bin * BLOCK_WIDTH); } } for (double bin: bins){ sum = sum + (MAX_WIDTH * ((BLOCK_WIDTH * bin) / max_count)); } double avg_width = sum/bins.size(); svg_begin(400, 300); double top = 0; for (double x : bins) { sum += x; } average = sum / bins.size(); for (double bin : bins) { const double bin_width = MAX_WIDTH * ((BLOCK_WIDTH * bin) / max_count); if (bin_width > avg_width){ svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "#e71320"); } else { svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "#2fe713"); } if (bin > average) { svg_rect(TEXT_WIDTH, top, bin_width / scale, BIN_HEIGHT, "yellow", "red"); } else { svg_rect(TEXT_WIDTH, top, bin_width / scale, BIN_HEIGHT, "yellow", "green"); } top += BIN_HEIGHT; } svg_end(); }