Getting numbers of entries in uitable

Hi guys,

I have a uitable for different entries datas, for each entry i want to count in three edit text boxes the numbers of rows wich contain different values

For each row where in the nineth column is find 'Corn'

For each row where in the nineth column is find 'Rice'

For each row where in the nineth column is find 'Flour'

I tried this but every time i change the entry with a row with different value it stops:

new_data is 1x33 3976 cell

the following is under a push button

column_name = new_data(:,9);

match_corn = strcmp(column_name,'Corn');

match_rice = strcmp(column_name,'Rice');

match_flour = strcmp(column_name,'Flour');

if match_corn == 1;

count_corn = length(match_corn);

set(handles.edit3,'String',count_corn);

end

if match_rice == 1;

count_rice = length(match_rice);

set(handles.edit4,'String',count_rice);

end

if match_flour == 1;

count_flour = length(match_flour);

set(handles.edit5,'String',count_flour);

end

could you tell me where is my mistake?

Answer 1

[Voss]

column_name is a vector, so strcmp(column_name,'Corn') is a vector (of class logical), so when you do:

if match_corn == 1

that condition will be considered true only if all elements of match_corn are true, i.e., all elements of column_name are 'Corn'.

Instead, you want to count the number of non-zero elements of match_corn, which you can do with nnz:

column_name = new_data(:,9);
match_corn = strcmp(column_name,'Corn');
match_rice = strcmp(column_name,'Rice');
match_flour = strcmp(column_name,'Flour');

count_corn = nnz(match_corn);
set(handles.edit3,'String',count_corn);

count_rice = nnz(match_rice);
set(handles.edit4,'String',count_rice);
   
count_flour = nnz(match_flour);
set(handles.edit5,'String',count_flour);

[Cristian Martin]

Thank you for the answer!

[Voss]

You're welcome!