i want to create an error msg in matlab gui
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I want to run a program where a excel file will be taken as input and i want that if the excel file is not find there should be an error msg. how can i create that type of error msg box. here file name is stored in a variable named a. please help me. thank you in advance..
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Friedrich
le 13 Juil 2011
Hi,
You have to use the exist function. If the Excel file is not on the MATLAB path you will need the absolut path to it. And than do
if exist(a,'file') ~= 2
msgbox('File Not found','Error','Error');
else
%file is there, do something with it
end
Where a should look like
a = 'C:\folder_with_file\name_of_file.xls'
a =
C:\folder_with_file\name_of_file.xls
Plus de réponses (1)
Chirag Gupta
le 13 Juil 2011
The previous answer seems to work. What are the contents of the variable? Is the variable a cell?
filename = 'MyTest1.xls'
if (~exist(filename,'file'))
msgbox('File Not Found','Error','Error');
end
What is the error if any that you are getting? Note that if the variable filename is a cell, you will need to pass the name explicitly like:
exist(filename{1},'file')
6 commentaires
Friedrich
le 13 Juil 2011
it works fine for me. please post your code and the content of the variable a
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