Error for assignment of Dynamic string for Struct array in GUI
显示 更早的评论
Hi all,
I created a GUI programtically. I've a database (struct array) something like this
database.B01.Comp
database.K01.tur
database.C01.comp
.
.
.
etc.
I want to readin the data whenever the user selects particular type of data from a popupmenu. For instance, my callback function for the popup is.
function[] = pop11_2_Callback(varargin)
% get the string of the popmenu
S1 = (get(handles.pop1_2,'String'));
% Get the user selction of the string
S2 = (get(handles.pop1_2,'Value'));
% User selection
Sname = S1(S2);
%displaying the database corresponding to particular shaft.
database.(Sname).turbine
end
when I try to use this I get an error saying.
Argument to dynamic structure reference must evaluate to a valid field name.
Error in sample_gui/pop11_2_Callback (line 942)
database.(Sname).turbine(2,:)
Error while evaluating UIControl Callback
I tried to check it with the same code outside GUI and it works. But I'm not sure what is causing problem in my case.
Thanks in advance.
回答（1 个）
Walter Roberson
2016-2-2
0 个投票
Your code does not define Sname. Also, because you use str2num(), your S1 is a numeric vector so what you have named String will be a numeric value not a string.
类别
在 帮助中心 和 File Exchange 中查找有关 Structures 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
