Question

有没有办法通过轴的分数在图中定位文字？无论x和y的区别如何，我希望所有图表的文本位于相同的位置。这个功能在ax.annotate（）中，但我需要加入额外的'xy'参数，这使我的代码更难阅读。

    // #include <iostream>
    // #include <iomanip>
    // using namespace std;

    // int main()
    // {
        // int number; //number of beverages
        // float cost; //cost of beverage
        // int beverage; //beverage type    
        // bool validBeverage;

        // cout << fixed << showpoint << setprecision(2);

        // do
        // {
            // cout << endl << endl;
            // cout << "Hot Beverage Menu" << endl << endl;
            // cout << "1: Coffee         $1.00" << endl;
            // cout << "2: Tea            $ .75" << endl;
            // cout << "3: Hot Chocolate  $1.25" << endl;
            // cout << "4: Cappuccino     $2.50" << endl << endl << endl;

            // cout << "Enter the beverage 1,2,3, or 4 you desire" << endl;
            // cout << "Enter 5 to exit the program" << endl << endl;
            // cin >> beverage;

            // switch (beverage)
            // {
            // case 1: validBeverage = true;
                // break;
            // case 2: validBeverage = true;
                // break;
            // case 3: validBeverage = true;
                // break;
            // case 4: validBeverage = true;
                // break;
            // default:validBeverage = false;
            // }

            // if (validBeverage == true)
            // {
                // cout << "How many cups would you like?" << endl;
                // cin >> number;
            // }


            // switch (beverage)
            // {
            // case 1: cost = number * 1.0;
                // cout << "The total cost is $ " << cost << endl;
                // break;
            // case 2: cost = number * .75;
                // cout << "The total cost is $ " << cost << endl;
                // break;
            // case 3: cost = number * 1.25;
                // cout << "The total cost is $ " << cost << endl;
                // break;
            // case 4: cost = number * 2.50;
                // cout << "The total cost is $ " << cost << endl;
                // break;
            // case 5: cout << "Thank you.  Please come again." << endl;
                // break;
            // default:cout << "You entered an invalid selection.\n";
                // cout << "Try again please" << endl;
            // }

        // } while (beverage != 5);

        // return 0;
    // }

Answer 1

您可以使用transform关键字：

import matplotlib.pyplot as plt
import numpy as np

fig = plt.figure() 
ax = fig.add_subplot(1, 1, 1)
ax.plot(np.arange(10),12*np.arange(10)) 
ax.text(0.4, 0.7, 'Correct Position', transform=ax.transAxes)

plt.show()

按轴分数定位文本

1 个答案: