How to take a value between two values

53 views (last 30 days)
hello, please help me.
i couldn't use "if" statement to take 'r' value. The 'r' value depends on 'd' value. but i don't know how to make the code for this.
lets take an example. when i input 'd' value as 15, the 'r' value that i got is 1.6 instead of 1.8. what should i do?

Accepted Answer

kintali narendra
kintali narendra on 15 Sep 2023
make small changes in the if statement. The code given below is the right way to use if.
if (10.2 <= d) && (d < 13)
r = 1.6
elseif (13.5 <= d) && (d < 20.0)
r = 1.8
elseif (20.0 <= d) && (d < 22.4)
r = 2.0
end
  5 Comments
Stephen23
Stephen23 on 15 Sep 2023
"how is the way to identify the property of a variable to know it is a scalar or not?"
isscalar(d)
Amron
Amron on 27 Sep 2023
thankyou kintali narendra, your code works. futhermore, in order to solve the issue that i got when i use that code, i use the "spinner" value rather than "edit field". As the result, the value of 'd' is detected as scalar.

Sign in to comment.

More Answers (2)

Steven Lord
Steven Lord on 15 Sep 2023
If you hover over the underlined <= operators in the code in the MATLAB Editor, you will see a Code Analyzer message explaining why that code doesn't do what you think it does and suggest how you can modify the code to do what you likely want to do.
Alternately, you could use the discretize function to discretize your data without a (potentially lengthy) if / elseif / elseif / elseif ... / end statement.
  2 Comments
Stephen23
Stephen23 on 15 Sep 2023
Edited: Stephen23 on 15 Sep 2023
"Alternately, you could use the discretize function to discretize your data"
Considering the r output values, how would that work?
Dyuman Joshi
Dyuman Joshi on 27 Sep 2023
@Stephen23 like this -
d = randi([5 25],1,8)
d = 1×8
12 18 21 5 11 9 19 17
X = [10.2,13,13.5,20,22.4];
Y = [1.6,1.8,2,Inf];
out = discretize(d,X,Y)
out = 1×8
1.6000 2.0000 Inf NaN 1.6000 NaN 2.0000 2.0000

Sign in to comment.


Stephen23
Stephen23 on 15 Sep 2023
d = [11,15,21];
X = [10.2,13.5,20,22.4];
Y = [1.6,1.8,2,Inf];
Z = interp1(X,Y,d, 'previous')
Z = 1×3
1.6000 1.8000 2.0000

Categories

Find more on MATLAB in Help Center and File Exchange

Products


Release

R2022a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!