how to show output of the distance between two point?I just find the highest location of white pixel.

1 次查看（过去 30 天）

Nurul Najmah 2015-5-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/214976-how-to-show-output-of-the-distance-between-two-point-i-just-find-the-highest-location-of-white-pixel

编辑： Nurul Najmah 2015-5-4

 I want to find the distance from the highest point location (highestWhiteRow,thatColumn) to the lastRow,thatColumn.After that,the 1row is equal to 3meter. But i'm got stuck to display the result of distance between that two points. 
 true
%highest point location
row=find(sum(img8,2)==0,1,'last')+1;
col=find(img8(row,:)~=0);
row=row(ones(size(col)));
Points=[row(:) col(:)]; 
imshow(img8);
title('Highest Point Location')
hold on
plot(Points(:,2),Points(:,1),'rp','MarkerSize',10)
a=text(Points(1,2),Points(1,1),['This is (',num2str(Points(1,2)),',',num2str(Points(1,1)),')']);
set(a, 'FontName', 'Arial' ,'FontWeight', 'bold', 'FontSize', 12,'Color', 'green');
%highest distance
% Find the distance.
xd=240-Points(:,2);
yd=Points(:,1)-Points(:,1);
distance=sqrt(xd.*xd + yd.*yd);
Dmeter=distance.*3;%one row=3meter
D=text(['Distance is(',num2str(Dmeter),')']); %show result of distance
set(D, 'FontName', 'Arial' ,'FontWeight', 'bold', 'FontSize', 12, 'Color', 'yellow');

2 个评论
显示无隐藏无

Jan 2015-5-4

The question is not clear. What do you want to show, what does "show" exactly mean (in the command window or as a diagram?)? What does the code demonstrate?

Please edit the question and post any details.

Nurul Najmah 2015-5-4