graph.h File Reference

Declaration of graph plotting function. More...

#include <string>
#include <vector>

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Functions
void	graph_plotting (const std::string &player, int stocknum, int width, int height)
	Plot the graph of the stock price history to std::cout.

Detailed Description

Declaration of graph plotting function.

Definition in file graph.h.

Function Documentation

graph_plotting()

void graph_plotting	(	const std::string &	player,
		int	stocknum,
		int	width,
		int	height )

Plot the graph of the stock price history to std::cout.

Parameters

player	the name of the player
stocknum	the stock number of the stock, -1 for HSI
width	the width of the graph
height	the height of the graph

Definition at line 135 of file graph.cpp.

                                                                                {
    float highest_price;
    float lowest_price;
    string stockname;
    vector<float> stockpricehistory = graphinput(player, stocknum, stockname, width);
    // convert the raw log input into the nearest "width" data points
    vector<string> color(width - 9, textWhite);
    color[width - 10] = textWhite;
    if (stockpricehistory.size() <= 1) {
        cout << "Why do you want to plot graph if there is only one data point?"
             << endl;
        return;
    }
    highest_price = *max_element(stockpricehistory.begin(), stockpricehistory.end());
    lowest_price = *min_element(stockpricehistory.begin(), stockpricehistory.end());
    float interval = (highest_price - lowest_price) / height;
    vector<vector<string>> graph(width, vector<string>(height, " "));
    // height column width rows, this is not in the usual 2d array format
    //  horizontal array and vertical array is inverted
    string maxstring;
    string minstring;
    if (interval == 0) {
        maxstring = graphpriceformat(highest_price + 1);
        minstring = graphpriceformat(lowest_price - 1);
    }
    else {
        maxstring = graphpriceformat(highest_price);
        minstring = graphpriceformat(lowest_price);
    }
 
    for (int i = 0; i < 6; i++) {
        graph[i][0] = maxstring[i];
        graph[i][height - 1] = minstring[i];
    }
    // \DeclareUnicodeCharacter{2517}{\L}
 
    for (unsigned int i = 0; i < stockpricehistory.size() - 1; i++) {
        int start = 10;
        int end = 10;
        if (interval != 0) {
            start = (height - 1) - (stockpricehistory[i] - lowest_price) / interval;
            end = (height - 1) - (stockpricehistory[i + 1] - lowest_price) / interval;
            // Checks to prevent out of bounds (SEGFAULT)
            if (start < 0) {
                start = 0;
            }
            if (end < 0) {
                end = 0;
            }
            if (start >= height) {
                start = height - 1;
            }
            if (end >= height) {
                end = height - 1;
            }
        }
        if (start == end) {
            graph[i + 9][start] = "■";
            if (stockpricehistory[i] > stockpricehistory[i + 1]) {
                color[i] = textGreen;
            }
            else if (stockpricehistory[i] < stockpricehistory[i + 1]) {
                color[i] = textRed;
            }
        }
        if (start > end) {
            for (int j = end; j <= start; j++) {
                graph[i + 9][j] = "■";
            }
            color[i] = textGreen;
        }
        else if (start < end) {
            for (int j = start; j <= end; j++) {
                graph[i + 9][j] = "■";
            }
            color[i] = textRed;
        }
        // idk why the colour is inverted using the normal setup method but i dont care
        // anyway it is running in normal HK stock colour indentations
    }
    for (int i = 0; i < height; i++) {
        graph[8][i] = "┃";
    }
    for (int i = 9; i < width; i++) {
        graph[i][height - 1] = "━";
    }
    graph[8][height - 1] = "┗";
    printstocknameandoverall(stockname, stockpricehistory, stocknum);
    printgraphblocks(graph, color, width, height);
}

References graphinput(), graphpriceformat(), printgraphblocks(), printstocknameandoverall(), textGreen, textRed, and textWhite.

Referenced by main().

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