Question

我绘制了加利福尼亚的地图，并按县划分：

vector<line>::iterator iter = side.begin();
line closest = *iter;
double distance, sumOfDistances = 0.0;
cout << "Line coords" << endl << "distance | Sum of distances" << endl;
while (iter != side.end()) {
    closest = *iter;
    distance = closest.sqDistance();
    sumOfDistances += distance;
    cout << closest << endl << distance << " | " << sumOfDistances << endl; // step info output
    iter++;
}

现在我正在尝试添加坐标。

每次我尝试添加坐标时，加利福尼亚地图都会消失，并且在X和Y轴图上会出现一个紫色的点。

CAL17 <- ca_base +
    theme_nothing() +
    geom_polygon(data = ca_county, fill = NA, color = "yellow") +
    geom_polygon(color = "black", fill = NA)

我收到以下错误

labs17 <- data.frame(lon17, lat17, stringsAsFactors = FALSE) +
    ggplot() +
    geom_point(data = labs17, aes(x = lon17, y = lat17), color = "White", size = 5) +
    geom_point(data = labs17, aes(x = lon17, y = lat17), color = "yellow", size = 4)

CAL17 +
    geom_point(data = labs17, aes(x = lon17, y = lat17), color = "black", size = 5) +
    geom_point(data = ca_df, aes(x = lon17, y = lat17), color = "purple", size = 2)

向在R中创建的地图添加坐标

0 个答案: