finding the maximum within a specific range

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Salma fathi on 25 Jul 2022
Commented: Salma fathi on 25 Jul 2022
Hello,
for the attached table we would like to find the index of the max point of the variable NE8 within the range of (200,400) applied on the variable GDALT. This might be a simpel task and I am complicating it but if anyone can help.

Githin George on 25 Jul 2022
Edited: Githin George on 25 Jul 2022
Hi Salma,
My understanding is that for rows having GDALT in range 200-400 you would like to find the row where NE8 is maximum.
Please see if this code helps
% I'm adding an Index Column, in case you specifically want the index
txt.INDEX = (1:height(txt))';
subTable = txt(txt.GDALT >=200 & txt.GDALT <=400, :);
% getting idx in the subtable using max function
[~,idx] = max(subTable.NE8,[],'omitnan');
% this row contains the required result. You can use the index from this
% row.
result = subTable(idx,:)
Hope this helps.
3 CommentsShow 1 older commentHide 1 older comment
Githin George on 25 Jul 2022
Edited: Githin George on 25 Jul 2022
I've corrected the mistake in last line. The last element in result will contain the 'index' from original column.
Salma fathi on 25 Jul 2022
Thank you so much this helped me alot and solved my problem. Appreciate the help.

KSSV on 25 Jul 2022
NE8 = T.NE8 ;
idx = NE8>200 & NE8<400 ;
val = max(NE8(idx))
val = 0×1 empty double column vector
It looks like there is no data in the given range.

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