Add a new row in an uitable dynamically using a pushbutton

Hello everybody

I'm creating an app for making electrical calculations but I have to add rows constantly for entrying new data to be evaluated. I'm using a code i saw on a MatLAB tutorial on Youtube but it doesn't run as I was expected. I would like some help to improve this code and make it works properly.

The code I'm using is:

% --- Executes on button press in pushbutton1.

function pushbutton1_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

data=get(handles.uitable1, 'data');

data=str2double(data);

data(end+1,:)=0;

set(handles.uitable1, 'data', data);

I appreciate for your help.

Answer 1

[Joseph Cheng]

what type of stuff are you sticking in this table? What are you expecting? if the data variable (place a breakpoint at data and see) is a string of numbers? letters?

is data at the get(handles.uitable1,'data') a cell array? if so i wouldn't convert data from a str2double as it could mess up your data depending on whats there. i would just go

data=get(handles.uitable1, 'data');
data(end+1,:)={0}; %if data is a cell or 
data(end+1,:)=0; %if data is an array.  
set(handles.uitable1, 'data', data);

[Julian]

Thanks for your help. It worked perfectly.

Honestly, I copy that code from a video tutorial and it didn't show the format for the data, that's why i used the str2double. I'm using a string of numbers.

Now, the problem i have is for me to use the new data, because the initial data that I enter in the uitable are strings and the code work using the cell type.

I have another questions if I could help me:

1.If I have a string data type and a cell type in an uitable, how can I get the data from the new uitable to use it with my calculation formulas?

2.How can I add the row names to the new rows added?

Thanks for your time

[Joseph Cheng]

So, just like you do the set(handles.uitable1,'data',data) you can set the 'RowName' and 'ColumnName' just the same.

http://www.mathworks.com/help/matlab/ref/uitable.html is a link to all the parameters or examples. it doesn't do it in guide but you should get a feel of what you can do. so intead of using uitable_____ to create it, GUIDE has already created and has the handle of handles.uitable already.

so in the example you can set the row and column names by doing something like this

 rnames = {'First','Second','Third'};
 set(handles.uitable1,'RowName',rnames);

and append as you would like the data when you create something new.

[Joseph Cheng]

Has by answers resolved your initial question? if so can you mark it as answered?

To answer your question below i would just convert the cell type into a mat then do the str to number conversion or vice versa. I don't have a sample of your cases so you'll have to check out the different functions and how to perform the conversion.

[Stephen23]

aveks Gebastyan's "Answer" moved here:

thanks Joseph Cheng

Answer 2

[Julian]

function varargout = AddRow(varargin)
% ADDROW MATLAB code for AddRow.fig
%      ADDROW, by itself, creates a new ADDROW or raises the existing
%      singleton*.
%
%      H = ADDROW returns the handle to a new ADDROW or the handle to
%      the existing singleton*.
%
%      ADDROW('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in ADDROW.M with the given input arguments.
%
%      ADDROW('Property','Value',...) creates a new ADDROW or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before AddRow_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to AddRow_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help AddRow

% Last Modified by GUIDE v2.5 13-Aug-2014 17:26:00

% Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @AddRow_OpeningFcn, ... 'gui_OutputFcn', @AddRow_OutputFcn, ... 'gui_LayoutFcn', [] , ... 'gui_Callback', []); if nargin && ischar(varargin{1}) gui_State.gui_Callback = str2func(varargin{1}); end

if nargout [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else gui_mainfcn(gui_State, varargin{:}); end % End initialization code - DO NOT EDIT

% --- Executes just before AddRow is made visible. function AddRow_OpeningFcn(hObject, eventdata, handles, varargin) % This function has no output args, see OutputFcn. % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % varargin command line arguments to AddRow (see VARARGIN)

% Choose default command line output for AddRow handles.output = hObject;

% Update handles structure guidata(hObject, handles);

% UIWAIT makes AddRow wait for user response (see UIRESUME) % uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line. function varargout = AddRow_OutputFcn(hObject, eventdata, handles) % varargout cell array for returning output args (see VARARGOUT); % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
data=get(handles.uitable1, 'data'); % Get data as a string
data(end+1,:)={0}; % Add new row of 0's as a cell type
set(handles.uitable1, 'data', data); %  I have a new uitable with a rows with string type and            other rows as cell type

% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future ve
% handles    structure with handles and user data (see GUIDATA)

data=get(handles.uitable1, 'data'); % Gets the actual data for use
data=str2double(data); % Change all strings inside the uitable to a double type
X=data(:,1); % Sets the X vector from the data
Y=data(:,2); % Sets the Y vector from the data
axes(handles.axes1) % Sets the axes for use
plot(X,Y) % Plot X vs. Y in the selected axes.

How can I use the data if I have an string type and a cell type into the uitable?

[imene. B]

thank you very much julian :D
here's my code, it works perfectly

 Add a row
% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
data=get(handles.uitable1, 'data');
data(end+1,:)={0};
set(handles.uitable1, 'data', data);

[Anas Sheikh]

How to add coloumn of 0 zeroes?