I understand that you are using EPANET toolkit. You used “epanet” function to create an object for EPANET toolkit interface and tried to access the method “setLinkDiameter” which produced the error: “Dot indexing is not supported.”
Dot indexing is used for accessing the fields in struct or methods in objects. The error regarding dot indexing suggests that the variable ‘d’ is not an object or struct.
You can check if EPANET object is initialized correctly. Ensure that the object creation does not raise any errors. You can also use the “whos” command to check the type of variable:
inpname='Net.inp';
d=epanet(inpname);
whos d
You can also check if the variable was overwritten before accessing the “setLinkDiameter” method. Have a look at the following code snippet:
d = 5;
disp(d);
d = struct('Name','Alice','Age',25);
disp(d.Name);
whos d;
d=10;
disp(d.Name);
In the above code snippet, the variable 'd' is overwritten and when the field 'Name' is accessed using the variable 'd', it produces same error.
Also have a look at these previous MATLAB Answer cases that might help you:
Hope this helps!!
