我通过散点算法随机生成了3组点,算法是
M = randi(1000,200);
AP = randi(1000,12);
BS = randi(1000,7);
scatter(M(:,1),M(:,20),21,'b.'); hold on
scatter(AP(:,1),AP(:,9),80,'k*');hold on
scatter(BS(:,1),BS(:,4),'r');hold off
现在,我必须为AP设置覆盖区域并分析AP和M之间的距离,它在覆盖范围内。谁能帮我?
我通过散点算法随机生成了3组点,算法是
M = randi(1000,200);
AP = randi(1000,12);
BS = randi(1000,7);
scatter(M(:,1),M(:,20),21,'b.'); hold on
scatter(AP(:,1),AP(:,9),80,'k*');hold on
scatter(BS(:,1),BS(:,4),'r');hold off
现在,我必须为AP设置覆盖区域并分析AP和M之间的距离,它在覆盖范围内。谁能帮我?
首先提取AP的覆盖区域:
ExtractedM=[M(:,1) M(:,20)];
ExtractedAP=[AP(:,1) AP(:,9)];%Just creating two different matrices for plotted points
%calculating coverage area of AP i.e. bounding box for coordinates of AP
yMax=max(ExtractedAP(:,2));
yMin=min(ExtractedAP(:,2));
xMax=max(ExtractedAP(:,1));
xMin=min(ExtractedAP(:,1));
%Finding the points from M which lie in the coverage area of AP
[positionBoundedPointsMx1,dummy]=find(ExtractedM(:,1)>=xMin & ExtractedM(:,1)<=xMax);
[positionBoundedPointsMx2,dummy]=find(ExtractedM(:,2)>=yMin & ExtractedM(:,2)<=yMax);
positionBoundedPointsMx=intersect(positionBoundedPointsMx1,positionBoundedPointsMx2,'rows');
boundedPointsM=ExtractedM(positionBoundedPointsMx,:);
%Making sure that correct sets of points in M have been extracted
scatter(M(:,1),M(:,20),21,'b.'); hold on
scatter(AP(:,1),AP(:,9),80,'k*');hold on
scatter(BS(:,1),BS(:,4),'r');hold on;
scatter(boundedPointsM(:,1),boundedPointsM(:,2),'ko');
M 中提取的点由黑色圆圈内的蓝点表示。它看起来是正确的,因为 M 中的所有点都位于 AP 的覆盖范围内。
现在,我不确定您要计算什么。假设您只想计算两点之间的欧几里得距离,因此,我将ExtractedAP
andboundedPointsM
转换为向量并使用pdist2
ExtractedAP_Vec=ExtractedAP(:); %24x1 vector
boundedPointsM_Vec=boundedPointsM(:); %224x1 vector
%calculate distance between each point of 'ExtractedAP_Vec' and every point in 'boundedPointsM_Vec'.
dist_AP_M=pdist2(ExtractedAP_Vec,boundedPointsM_Vec);
PS 绘制散点图并自行验证。我不能在这里发布图片,对不起。