Creating input options based on a number
显示 更早的评论
Just say I put in 7 for the amount, how would the input option print out seven b and seven c.
I can't figure out a efficient way to do it
5 个评论
Oleg Komarov
2012-3-23
I do not understand, be more specific. 7b or sevenb or smt else?
Is that a custom made GUI or are you using some inbuilt ones (looks like inputdlg)?
Rooy
2012-3-23
Stephen
2012-3-23
If you programmed a lot more GUI fields and had them set to visibility = 'off' and enabled = 'off' as a default, then you could create a callback that triggers when you input the amount 7, and toggles 7 of those input fields to visible and enabled. I think that is what you are trying to do at least.
Oleg Komarov
2012-3-24
To keep it simple you can call inputdlg once asking for how many fields, then call it again setting the number of fields.
Rooy
2012-3-24
采纳的回答
Oleg Komarov
2012-3-24
There is but you have to program it yourself:
- write completely the whole GUI, using also jTextField (java) in place of the MATLAB edit box.
To me it seems an overkill unless your primary task is to program a GUI.
I would simply go for:
n = input('How many a and b: ');
out = NaN(n,2);
r = 0;
tmp = input('Enter values for a: ');
while r < n
tmp = input(repmat(' ',1,20));
if isempty(tmp)
continue
else
r = r+1;
out(r,1) = tmp;
end
end
r = 0;
tmp = input('Enter values for b: ');
while r < n
tmp = input(repmat(' ',1,20));
if isempty(tmp)
continue
else
r = r+1;
out(r,1) = tmp;
end
end
EDIT I decided to show you how much of an overkill is, hope you'll enjoy it :)
function varargout = myGUI2
% Syntax examples:
% myGUI2 -> returns both values for 'a' and 'b' in 'ans'
% out = myGUI2 -> returns both values for 'a' and 'b' in 'out'
% [out1,out2] = myGUI2 -> returns 'a' in 'out1' and 'b' in 'out2'
% [...,...,S] = myGUI2 -> returns also structure with handles
S.fh = figure( 'units', 'pixels',...
'position', [500 500 200 260],...
'menubar', 'none',...
'name', 'myInputdlg',...
'numbertitle', 'off',...
'resize', 'off',...
'color', [.94 .94 .94]);
% Edit box: how many a and b
S.ed = uicontrol('style', 'edit',...
'unit', 'pix',...
'position', [10 205 70 30],...
'background', 'w');
% Text: on top of edit box
S.tx = uicontrol('style', 'text',...
'string', 'How many values for a and b:',...
'unit', 'pix',...
'position', [10 240 180 15],...
'background', [.94 .94 .94],...
'Horizontal', 'left');
% Pushbutton: refresh the uitable that accepts values for a and b
S.pb(1) = uicontrol('style', 'push',...
'units', 'pix',...
'position', [91 208 100 25],...
'string', 'Refresh',...
'callback', @pb_call_refresh);
% Text: warns if other than numeric values
S.tx(2) = uicontrol('style', 'text',...
'unit', 'pix',...
'position', [10 175 180 25],...
'background', [.94 .94 .94],...
'foreground', 'r');
% Uitable: values for a
S.ut(1) = uitable( 'unit', 'pix',...
'position', [10 45 85 135],...
'ColumnF', {'numeric'},...
'ColumnW', {66},...
'ColumnN', 'a',...
'Enable', 'inactive',...
'RowName', [],...
'ColumnE', true);
% Uitable: values for b
S.ut(2) = uitable( 'unit', 'pix',...
'position', [106 45 85 135],...
'ColumnF', {'numeric'},...
'ColumnW', {66},...
'ColumnN', 'b',...
'Enable', 'inactive',...
'RowName', [],...
'ColumnE', true);
% Pushbutton: done
S.pb(2) = uicontrol('style', 'push',...
'units', 'pix',...
'position', [50 10 100 25],...
'string', 'Done',...
'callback', @pb_call_done);
S.tmp = {};
uiwait(S.fh)
if nargout > 1
varargout = S.tmp;
else
varargout = {cell2mat(S.tmp.')};
end
if nargout == 3
varargout{3} = S;
end
if ishghandle(S.fh)
delete(S.fh)
end
% pb_call Refresh
function pb_call_refresh(varargin)
nrows = get(S.ed,'String');
if isempty(nrows)
return
elseif regexp(nrows,'\D')
set(S.tx(2),'String','Only numeric values [0-9]!')
set(S.ut,'enable','off')
else
set(S.tx(2),'String','')
nrows = str2double(nrows);
set(S.ut,{'Data'},{nan(nrows,1)},{'enable'},{'on'})
end
end
% pb_call Done
function pb_call_done(varargin)
S.tmp = get(S.ut,'Data');
uiresume(S.fh)
end
end
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