From 983c07c251a7e12d90934af30a12af00db59e97d Mon Sep 17 00:00:00 2001
From: TarasovEE <TarasovYY@mpei.ru>
Date: Tue, 5 Aug 2025 21:30:43 +0300
Subject: [PATCH] =?UTF-8?q?source:=20=D0=B4=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
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---
 histogram.cpp | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/histogram.cpp b/histogram.cpp
index 7015072..4dbfc63 100644
--- a/histogram.cpp
+++ b/histogram.cpp
@@ -1,4 +1,5 @@
 #include "histogram.h"
+#include "svg.h"
 using namespace std;
 
 //  Поиск максимума и минимума среди оценок.
@@ -52,3 +53,38 @@ vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count)
         }
     return bins;
 }
+
+//  Создание гистограммы на основании корзин в формате SVG.
+
+void show_histogram_svg(const vector<size_t>& bins)
+{
+//  Необходимые константы.
+    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;
+    size_t max_bins = bins[0];
+
+//  Поиск максимальной корзины.
+
+    for (size_t x: bins)
+        if (x > max_bins)
+            max_bins = x;
+
+//  Выравнивание гистограммы по максимальному столбцу.
+
+    const auto BLOCK_WIDTH = (IMAGE_WIDTH - TEXT_WIDTH)/max_bins;//BLOCK_WIDTH = 10
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+    double top = 0;
+    for (size_t bin : bins)
+        {
+            const double bin_width = BLOCK_WIDTH * bin;
+            svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+            top += BIN_HEIGHT;
+        }
+    svg_end();
+}