how to get value .if i know the coordinates value

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singh
singh 2015-4-11
回答： Image Analyst 2015-4-11
suppose i create a network and all nodes are randomly plot on the graph.I know the coordinates value but how to get the particular node value at XY location. X=X1(1) it contain the X coordinate value Y=X1(2) it contain the Y coordinate value XY={X,Y}

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回答（1 个）

Image Analyst
Image Analyst 2015-4-11
Find the distance from your (x,y) coordinate location to all other node locations (let's say they're defined by variables named allX and allY), then use min() to find out which one is closest to your target (x,y) point:
distances = sqrt((x - allX) .^ 2 + (y - allY) .^ 2);
[minDistance, indexOfClosestNode] = min(distances);

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