Find biggest number of variables and also it´s ID-number

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Ion
Ion 2013-2-22
Hello!
I have 6 variables in Simulink. They are:
Car1_Speed, Car2_Speed, Car3_Speed, Car1_ID, Car2_ID, and Car3_ID
I´m comparing the car speeds. I use the max function to find the fastest car at any time. I would like to also know which car is the fastest but I don´t know the way to show also the Carx_ID for the fastest car. Is it possible with Simulink blocks or with some user defined Matlab-function?
How can I do this most efficiently?
Thank you in advance!

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回答（2 个）

Sean de Wolski
Sean de Wolski 2013-2-22
First: FAQ
Second:
doc max
You'll see
[maxValue, index] = max(...)
Image Analyst
Image Analyst 2013-2-22
Try this (untested):
[maxSpeed, indexOfFastest] = max([Car1_Speed, Car2_Speed, Car3_Speed])
if indexOfFastest == 1
fastestCarID = Car1_ID;
elseif indexOfFastest == 2
fastestCarID = Car2_ID;
else
fastestCarID = Car3_ID;
end

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