How to find values in a table
11 views (last 30 days)
Show older comments
Hi,
I have a question, lets say I have a table like this
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1529797/image.jpeg)
In matlab I want to find/call a value in column 3 corresponding to say 100 in first column. Not only that, but I also want to use values not in the table (say for 95 in the first column) using linear interpolation. I want to be able to do this using any of the columns. How can I achieve this in MATLAB? Please help.
0 Comments
Accepted Answer
Walter Roberson
on 4 Nov 2023
%let your table be named T
column_with_key = 1;
column_to_examine = 3;
value_to_lookfor = 100;
value_to_extrapolate = 95;
mask = T.(column_with_key) == value_to_lookfor;
wanted_value1 = T.(column_to_examine)(mask)
wanted_value2 = interp1(T.(column_with_key), T.(column_to_examine), value_to_extrapolate)
In practice it is usually shorter than this, such as just
wanted_value = interp1(T.var1, T.var3, 95)
6 Comments
Walter Roberson
on 5 Nov 2023
F = scatteredInterpolant(T.pressure, T.entropy, T.enthalpy);
interpolated_enthalpies = F(query_pressures(:), query_entropys(:));
More Answers (0)
See Also
Categories
Find more on Matrices and Arrays in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!