How to find values from data

When using if statements, I am trying to find a set of data that fits the condition I have given. How can I find where the data with the right conditions is located?

Answer 1

[KSSV]

You can use logical indexing.

Example:

A = rand(10,1) ;  % data for demo 
idx = A > 0.3 & A < 0.8 ;
idx

idx = 10×1 logical array
   0
   1
   0
   1
   0
   0
   0
   0
   0
   0

find(idx)

ans = 2×1

2 4

A(idx)

ans = 2×1

0.7124 0.7594

[Zach Hanses]

how would I use this on if statments?

[KSSV]

You can go by logical indexing seperately; need not to use a if condition. If you insist:

A = rand(10,1) ;
for i = 1:10
    if A(i) > 0.3 && A(i) < 0.8  % condition 
        A(i)  % do this 
    end
end

ans = 0.5699

ans = 0.6995

ans = 0.3670

ans = 0.6272

ans = 0.3990

ans = 0.5883

[Zach Hanses]

What if the two conditions were from two different datasets.

if A(i) > 0.3 && A(i) < 0.8 % condition

A(i) % do this

What would I put for the outcome of the if condition

This is what I have

for n = 1:length(aveDailyTemp)

if ((aveDailyTemp > 2) & (sevenDayAve < 1));

bestDatesToPlant(n)

[Star Strider]

What are the row and column sizes are the two data sets? Do they have common times (or any other specific identifying row information)?

[Zach Hanses]

they are both 244x1. Each row is supposed to indicate days