Loop to carry out calculation for pairs 1 and 2, then pairs 2 and 3 and so on.
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Hi,
I have two 8x1 matrices. One matrix is list of longitude coordinates (Final_Longitude_Values). The other matrix is the corresponding latitude coordinates (Final_Latitude_Values).
I want to calculate the distance between the first pair and the second pair, and then the second pair and the third pair, and so on until I have come to the end of each matrix.
I have written the following code in an attempt to automate this process:
{for j = 1:length(Final_Latitude_Values)
latlon1=[(Final_Latitude_Values(j)) (Final_Longitude_Values(j))];
latlon2=[(Final_Latitude_Values(j+1) (Final_Longitude_Values(j+1))];
end
[d1km d2km]=distance(latlon1,latlon2);
Segment_Distance = d2km}
However, the index exceeds the matrix dimensions, and I can't seem to figure out how to work around this issue. If anyone could correct my code it would be much appreciate.
Thanks
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采纳的回答
Torsten
2018-8-21
Use
for j = 1:length(Final_Latitude_Values)-1
instead of
for j = 1:length(Final_Latitude_Values)
Best wishes
Torsten.
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更多回答(2 个)
Fangjun Jiang
2018-8-21
You have 8 locations thus 7 distances. When j is 8, Final_Latitude_Values(j+1) exceeds the matrix dimension.
Change the for-loop to
for j = 1:length(Final_Latitude_Values)-1
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BOB
2018-8-21
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Torsten
2018-8-21
I don't know if this is intended, but note that you only calculate the distance between the last two components of the vectors, namely
[(Final_Latitude_Values(j)) (Final_Longitude_Values(j))]
and
[(Final_Latitude_Values(j+1)) (Final_Longitude_Values(j+1))]
for
j = length(Final_Latitude_Values)-1.
另请参阅
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