MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Uživatelská příručka stáhnout pdf (Strana 691)

100

101

GUI that Displays and Graphs Tabular Data

% Callback to erase and replot markers, showing only those

% corresponding to user-selected cells in table.

% Repeatedly called while user drags across c ells of the uitable

% hmkrs are handles to lines having markers only

set(hmkrs, 'Vi sibl e', 'off') % turn them off to begin

% Get the list of currently selected table c ells

sel = eventdata.Indices; % Get selection indice s (row, col)

% Noncontiguous selections are ok

selcols = unique(sel(:,2)); % Get all selected data col IDs

table = get(hObject,'Data'); % Get copy of u itab le data

% Get vectors of x,y values for each column in the selectio n;

for idx = 1:numel(selcols)

col = selcols(idx);

xvals = sel(:,1);

xvals(sel(:,2) ~= col) = [];

yvals = table(xvals, col)';

% Create Z-vals = 1 in o rder to plot marker s above lines

zvals = col*ones(size(xvals));

% Plot markers for xvals and yvals using a line object

set(hmkrs(col), 'Visible', 'on',...

'XData', xvals ,.. .

'YData', yvals ,.. .

'ZData', zvals )

end

To view the se lect _callback code in the Editor, click h ere.

The rows and columns of the selected cells are passed in

eventdata.Indices

and copied into sel. For example, if all three columns in row three of the

table are selected,

eventdata =

Indices: [3x2 double]

sel =

15-27

1 2 ... 686 687 688 689 690 691 692 693 694 695 696 ... 758 759

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