need to create a popup drop down list in one of the columns in the tabel in gui which increaes in row size which every event .. an event is a mouse click

here is the code for the creation of the table

      uitable(pan,   'Tag', 'PPR_TablePoints', ...
                   'Units', 'normalized', ...
                   'Position', [0.05, 0.01, 0.3, 0.98], ...
                   'CellSelectionCallback', @(src,evnt) PPTableButtonDownCallback(src, evnt, this), ...
                   'CellEditCallback', @(src,evnt) PPTableEditCallback(src, evnt, this))

here is code for the upodate of the tabel created ....the loop updates the rows with each event which is the click

ncols = 4;
data = cell(nItems, ncols);
for i =1 : nItems
    data{i,1} =  i;
    data{i,2} = pointlist(i, 1);
    data{i,3} = pointlist(i, 2);
    data{i,4} = xxxxxxxxxxxxxxx
    
end

i tried with categorical

categorical(data.data{1,4},{option1 ,option2}, ordinal,true);

the showed an error dot indexing is not supported....

NEED HELP

[Jan]

If data is a cell, what do you expect data.data{1,4} to do?

Please post the complete error message, when you mention it in the forum.

I do not know, what a "popup drop down list" is.

[Alan Antony]

i want to have selection options which is available for each cell in a certain column , data{i,4} represents values in the column no 4 ... below a better image of a popup drop down list i meant is shown ... categorical was just one method through which i tried but turned out to be not working ... i would like implement within the scope of the above code mentioned... is it possible somehow ?

[Jan]

@Alan: What about using the ColumnFormat of the table? If you insert a cell string for a a specific column, there is a pulldown menu in each cell. All cells of this column have the same contents of tis menu, but you can choose an individual enty for each row.

See:

doc uitable

[Alan Antony]

i did use column format now the error shown is

Exception in thread "AWT-EventQueue-0": java.lang.NullPointerException

[Jan]

Please post the code you have used. Restart Matlab and try it again.

[Alan Antony]

columnname = {'#', 'x', 'y', 'no','id','Remove'};
columnformat = {[] [] [] {'value ', 'value2'} [] [] };
editable = [false true true true false false];

hTable.ColumnName = columnname;
hTable.ColumnFormat = columnformat;
hTable.ColumnEditable = editable;
hTable.RowName = [ ];
hTable.Data = data;
hTable.ColumnWidth = {60, 60, 60, 60, 60, 60};

Answer 1

[Harsha Priya Daggubati]

Hi,

It would be helpful to solve the issue if you share your code completely and elaborate on your issue.

[Alan Antony]

thankyou for your response ..... changed the workflow of the fuctions calls .... now its working as per requirements . it was a problem with workflow and my algorithm as in whole. got it done .. i will post the questions when i have further doubts

thank you