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Max Value in a array
Edi Murway from United States  [10 posts]
1 year
I'm using Line profile to determine when an item crosses any part of the line.
The maximum value returned used as a threshold works well (I need it fast) or I would just script it.
I need to know the maximum value returned by Line_Profile_Values.
I have tried Sort with some effect but it's not clear how to use it.
Also is there new documentation on the new sort module, there are 2 new fields (record size and field offset)

Is there another way (other than scripting) to get a fast Max Value from an array?

 
Steven from United States  [1425 posts] 1 year
Edi,

The two fields for the sort have to do with working in arrays that have multiple values. For example if you have an array of X and Y values the record size is 2 and the field offset would be 1 if you wanted to sort on X and 2 if you wanted to sort on Y. Since you can also have 3 or 4 or N numbers in an array that are associated like a record, that's the reason for those fields.

In your case, a record size and offset of both 1 will work. It is NOT the size of the array. The module knows the length/size of the array from accessing that within RR.

Alternatively, you can also find the max value by using a small VBScript that should execute quite quickly. Something like

'////////////

line = GetArrayVariable("Line_Profile_Values")
max = 0
if isArray(line) then
  for i = 0 to ubound(line)
    if line(i) > max then max = line(i)
  next
end if

write "The max is " & max

'///////////////

running from within a VBScript module.

STeven.
Edi Murway from United States  [10 posts] 1 year
Got It, Thank you STeven
Edi Murway from United States  [10 posts] 1 year
Hi again,
Actually the array returned by the line profile module requires a record size of 3 and an offset of 1 to return the Max Value anywhere in the array. It's fast and works great.

An Ascending Sort will return the Min value in the array and Descending will return the Max value anywhere in the array.

The first element in the reordered array will be the result.

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