0 个投票

hi,
I have a school project, I need to use Matlab GUI to create a calculator and unit converter i used Guide
I have a problem in unit conversion code, I keep getting the error "Unknown function or 'main list' variable."
and nothing appears in the output screen.
I appreciate the help, thanks in advance for your time.
i'll attach the code

请先登录，再回答此问题。

 采纳的回答

Walter Roberson
Walter Roberson 2022-1-10

0 个投票

Before
if mainList=='temperature'
if innerList1=='Celsius'
if innerList2=='Fahrenheit'
insert
mainList_options = handles.mainList.String;
mainList_value = handles.mainList.Value;
innerList1_options = handles.innerList1.String;
innerList1_value = handles.innerList1.Value;
innerList2_options = handles.innerList2.String;
innerList2_value = handles.innerList2.Value;
%at this point you really should check to be sure that the _value
%variables are not empty: if they are then it means nothing has been
%selected in that list.
%check for empty here
%then
mainList = string( mainList_options{mainList_value} );
innerList1 = string( innerList1_options{innerList1_value} );
innerList2 = string( innerList2_options{innerList2_value} );

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Tahani Alajmi
Tahani Alajmi 2022-1-10
Thank you for responsing to my question.
Can you please explain more on how can i check if the var are empty or not?
i added the options on the pop-up menu in the guide window do i need to add it somewhere else?

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Characters and Strings 的更多信息

产品

版本

R11.1

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by