Creating iddata from data in tables
34 views (last 30 days)
Show older comments
Bill Tubbs
on 22 Mar 2020
Commented: Bill Tubbs
on 27 Mar 2020
I guess iddata won't accept data from a table.
>> dataTable(1:5,:)
ans =
5×5 table
Time H1 H2 T1 T2
____ __ __ _____ _____
0 0 0 21.23 21.23
1 0 0 21.55 21.55
2 0 0 21.55 21.55
3 0 0 21.87 21.55
4 0 0 21.55 21.23
>> dataSet = iddata(dataTable(:,4:5),dataTable(:,2:3));
Error using iddata (line 193)
The value of the "OutputData" property must be a double matrix or a cell array of such matrices.
Is this the only or best solution?
>> inputData = table2array(dataTable(:,2:3));
>> outputData = table2array(dataTable(:,4:5));
>> dataSet = iddata(outputData,inputData);
0 Comments
Accepted Answer
Sourabh Kondapaka
on 27 Mar 2020
Hi,
Instead of indexing based on paranthesis “()” you can use curly braces “{}” to
extract the cell array within the table.
% Instead of :
inputData = table2array(dataTable(:,2:3));
outputData = table2array(dataTable(:,4:5));
dataSet = iddata(outputData,inputData);
% You can do something much simpler:
dataSet = iddata( dataTable{:,4:5}, dataTable{:,2:3} );
Here is a sample table which demonstrates the same thing as above:
t = table;
t.Time = (0:1:100)';
t.H1 = zeros(101,1);
t.H2 = zeros(101,1);
t.T1 = zeros(101, 1) + 23.25;
t.T2 = zeros(101, 1) + 21.53;
dataset = iddata(t{:,4:5}, t{:,2:3});
More Answers (0)
See Also
Categories
Find more on Transfer Function Models 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!