Sort or Compare 20 Values

javaninger

Member
J
Join Date
Mar 2010
Location
mo
Posts
10
I currently have an array with 20 counters. I would like to find the top (highest .ACC value) five of the total 20 and use that information.

I need to compare all 20 counters.
Take largest 5.

Counter0.ACC = 2
Counter1.ACC = 4
Counter2.ACC = 3
Counter3.ACC = 7
Counter4.ACC = 10
Counter5.ACC = 2
so on....

(I could do this as string or some other method)
TopFive0 = Counter4
TopFive1 = Counter3
TopFive2 = Counter1
so on....


Any thoughts? I am thinking the data could be stored in a UDT.

Thanks,
John
 
javaninger said:
I currently have an array with 20 counters. I would like to find the top (highest .ACC value) five of the total 20 and use that information.

I need to compare all 20 counters.
Take largest 5.

Counter0.ACC = 2
Counter1.ACC = 4
Counter2.ACC = 3
Counter3.ACC = 7
Counter4.ACC = 10
Counter5.ACC = 2
so on....

(I could do this as string or some other method)
TopFive0 = Counter4
TopFive1 = Counter3
TopFive2 = Counter1
so on....


Any thoughts? I am thinking the data could be stored in a UDT.

Thanks,
John
Click to expand...

Are you looking to store just the "values" of the largest 5 or the "indentity" of the largest 5.
 
So if I wanted to sort the counters, I would have to copy their value to another array like SortedCounters[20]? Would this array just be an array of INT's then?
 
It would be a DINT array.

Use an FAL instruction to copy the counter[falcontrol.pos].acc to the array[falcontrol.pos] and then sort the array.
 
If it is simply just values you are concerned about, first make your counter an array.

Counter[0].ACC, Counter[1].ACC, etc.

Then make another 5 DINT array for your values
TopFive[0], TopFive[1], etc

What happens if several counters tie for fifth place?
 

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