assign variable from txt-file
11 views (last 30 days)
Show older comments
Hello,
i want to realize the following issue...
I have a given txt-file in such a format:
var1 = a
var2 = b
var3 = c
Now i want to assign these variable in matlab such as var1 = a and var2 = b ... But the vectors a, b, c, d, e and f are part of a big struct, where i can access on each value with that command: data(i).a(j), where i is the struct number and j the position of the value in f.e the vector a.
So if I change my txt-file to:
var1 = d
var2 = e
var3 = f
... I need the values of d in variable var1 which i use in matlab. So in the text-file it is a string but in my matlab program i have to use the string 'd' as a variable name to access the variable d from my struct. After the assignment i want to fill it like that, but i have to use something other than data(i).d(j), because i want the assignment dependant on my txt-file
for i=1:15
for j=1:length(var)
var(:,1) = data(i).d(j);
var(:,2) = data(i).e(j);
var(:,3) = data(i).f(j);
end
end
I hope I've explained my issue quiet understandable and I thank you in advance for any help...
Best regards
Da Ke
6 Comments
Walter Roberson
on 22 Jan 2019
If you have the data stored as a struct and you know the field name, then data.a . However since that is what you started with, I seem to be missing something.
If you have a cell array in which the first column is a variable name and the second is the corresponding value, then
var_a = YourCell{ strcmp(VariableYouAreLookingFor, YourCell(:,1)), 2};
In the case that the variable is not found, this would be empty. You would probably not want to store directly into an array because you would want to test for the variable being present and having the right size and datatype before storing.
Answers (0)
See Also
Categories
Find more on Structures 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!