帮我用C++写一段评价土地利用分类精度的代码
时间: 2023-06-12 11:05:39 浏览: 106
以下是一份简单的 C 代码,用于计算土地利用分类的精度评价指标:
```c
#include <stdio.h>
int main() {
int total_pixels = 0;
int correct_pixels = 0;
int classified_pixels = 0;
int user_accuracy, producer_accuracy, overall_accuracy;
// 获取总像素数、正确分类像素数、分类像素数
printf("Enter total number of pixels: ");
scanf("%d", &total_pixels);
printf("Enter number of correct pixels: ");
scanf("%d", &correct_pixels);
printf("Enter number of classified pixels: ");
scanf("%d", &classified_pixels);
// 计算用户精度、生产者精度、总体精度
user_accuracy = (float)correct_pixels / classified_pixels * 100;
producer_accuracy = (float)correct_pixels / total_pixels * 100;
overall_accuracy = (float)correct_pixels / total_pixels * 100;
// 输出结果
printf("User's accuracy: %d%%\n", user_accuracy);
printf("Producer's accuracy: %d%%\n", producer_accuracy);
printf("Overall accuracy: %d%%\n", overall_accuracy);
return 0;
}
```
该代码会让用户输入总像素数、正确分类像素数和分类像素数,然后计算用户精度、生产者精度和总体精度,并将结果输出到屏幕上。用户精度表示分类正确的像素中被正确分类的像素所占的比例,生产者精度表示被正确分类的像素中分类正确的像素所占的比例,总体精度表示所有像素中分类正确的像素所占的比例。