How to display values with formatting, converting numbers to strings.

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slumberk
slumberk 2011-2-13
if size(cost,1) == 2
A = (4*Pdt*cost(1,3)*cost(2,3)) + 2*(cost(1,2)*cost(2,3))+(cost(1,3)*cost(2,2));
B = 2*(cost(2,3)+cost(1,3));
lambda = num2str(A ./ B);
set(handles.answer1_staticText,'String', lambda);
P1 = (lambda - cost(1,2))./(2*cost(1,3));
P2 = (lambda - cost(2,2))./(2*cost(2,3));
PT = mat2str(P1 + P2);
set(handles.answer2_staticText,'String', PT);
guidata(hObject, handles);
end
From the coding above, the answer become like this :
[11.75 11.25 11.25 11.75 10.75 11.5 12.75 12.75 13]
My question is I want to display my answer at the static text box like this:
P1 = (%answer for P1)
P2 = (%answer for P2)
P TOTAL = (%answer for PT)
Can anyone help me with the coding?

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采纳的回答

Paulo Silva
Paulo Silva 2011-2-13
You can build the multiline text, for example:
{['P1 =' string1],['P2 =' string2],['P3 =' string3]}

更多回答（8 个）

Matt Tearle
Matt Tearle 2011-2-13
If I interpret your question correctly, you're asking how to get the nicely formatted output in the text box. If that's the case, use sprintf instead of mat2str to define the string PT before using set.
slumberk
slumberk 2011-2-13
@paulo silva can you show the full coding please?
@matt sorry if my question hardly to understand. Can you show me the coding using sprintf? Because i'm quite new with matlab
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Paulo Silva
Paulo Silva 2011-2-13
Similar code with sprintf:
PTM=sprintf('P1=%s\nP2=%s\nPT=%s',mat2str(P1),mat2str(P2),mat2str(P1+P2));
set(handles.answer2_staticText,'String', PTM);
Matt Tearle
Matt Tearle 2011-2-13
No worries, I just wanted to make sure I was answering the right question! Paulo's response is what I was thinking - the key being the use of \n to get line breaks. (Thx Paulo)
BTW, another way to get multiple lines is the use char(10) to print a line break: txt = ['string1',char(10),'string2']

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slumberk
slumberk 2011-2-14
@paulo: I have tried your coding but it seems there is an error like this :
Warning: Single line Edit Controls can not have multi-line text > In gui_aku2>Mybutton_Callback at 105
In gui_mainfcn at 96
In gui_aku2 at 42
In @(hObject,eventdata)gui_aku2('Mybutton_Callback',hObject,eventdata,guidata(hObject))
And my edit text box is missing after i push the button to run the program. Can you tell me what is the problem anyway?
@matt: what would be the answer for your example??
Matt Tearle
Matt Tearle 2011-2-14
function multilinetext
hf = figure;
uicontrol(hf,'style','pushbutton','string','update',...
'position',[100,100,60,20],'callback',@updatetxt);
hin = uicontrol(hf,'style','edit','position',[100,140,200,20]);
hout = uicontrol(hf,'style','text','position',[100,180,200,60]);
function updatetxt(~,~,~)
txt = get(hin,'string');
x = str2num(txt);
y = 2*x;
strng = ['x = ',txt,char(10),'y = ',mat2str(y),...
char(10),'sum = ',mat2str(x+y)];
set(hout,'string',strng)
end
end
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Matt Tearle
Matt Tearle 2011-2-14
this was just a standalone function to show how to use char(10). without your full code, I can't really test an answer to be sure that it will work, but I'll give it a go...

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slumberk
slumberk 2011-2-14
@paulo : there was an error at this code. This is my code that i paste from your coding:
A = (4*Pdt*cost(1,3)*cost(2,3)) + 2*(cost(1,2)*cost(2,3))+(cost(1,3)*cost(2,2));
B = 2*(cost(2,3)+cost(1,3));
lambda = num2str(A ./ B);
set(handles.answer1_staticText,'String', lambda);
P1 = (lambda - cost(1,2))./(2*cost(1,3));
P2 = (lambda - cost(2,2))./(2*cost(2,3));
string1=mat2str(P1);
string2=mat2str(P2);
string3=mat2str(P1+P2);
set(handles.answer2_staticText,'String', {['P1 =' string1],['P2 =' string2],['PT =' string3]});
PTM=sprintf('P1=%s\nP2=%s\nPT=%s',mat2str(P1),mat2str(P2),mat2str(P1+P2));
set(handles.answer2_staticText,'String', PTM);
So there is an error at:
set(handles.answer2_staticText,'String', {['P1 =' string1],['P2 =' string2],['PT =' string3]});
it says that string1 does not define??
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slumberk
slumberk 2011-2-14
can u paste your code here?? Coz i tried the code above here but it got error.. hurmmmm
Paulo Silva
Paulo Silva 2011-2-14
I used the exactly same code but had to use other values because I have no idea what's that Pdt and cost, I just commented the first lines and used P1=[1 2 3];P2=[4 5 6]

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slumberk
slumberk 2011-2-14
@paulo: well i edit the code be like this:
A = (4*Pdt*cost(1,3)*cost(2,3)) + 2*(cost(1,2)*cost(2,3))+(cost(1,3)*cost(2,2));
B = 2*(cost(2,3)+cost(1,3));
lambda = (A) ./ (B);
lambda1 = num2str(A ./ B);
set(handles.answer1_staticText,'String', lambda1);
P1 = (lambda - (cost(1,2)))./(2*cost(1,3));
P2 = (lambda - cost(2,2))./(2*cost(2,3));
string1=mat2str(P1);
string2=mat2str(P2);
string3=mat2str(P1+P2);
set(handles.answer2_staticText,'String', {['P1 =' string1],['P2 =' string2],['PT =' string3]});
PTM=sprintf('P1=%s\nP2=%s\nPT=%s',mat2str(P1),mat2str(P2),mat2str(P1+P2));
set(handles.answer2_staticText,'String', PTM);
now the error become like this :
Warning: Single line Edit Controls can not have multi-line text
What does this mean??
  1 个评论
Paulo Silva
Paulo Silva 2011-2-14
I believe the problem is related to the type of object, if you have edit text boxes you might have to change the Max value property, this is from the Matlab Help:
If the edit text Max and Min properties are set such that Max - Min > 1, the user can enter multiple lines. For example, setting Max to 2, with the default value of 0 for Min, enables users to enter multiple lines.

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Matt Tearle
Matt Tearle 2011-2-14
Try this (as a cut/paste replacement of the code you posted):
if size(cost,1) == 2
A = (4*Pdt*cost(1,3)*cost(2,3)) + 2*(cost(1,2)*cost(2,3))+(cost(1,3)*cost(2,2));
B = 2*(cost(2,3)+cost(1,3));
lambda = num2str(A ./ B);
set(handles.answer1_staticText,'String', lambda);
P1 = (lambda - cost(1,2))./(2*cost(1,3));
P2 = (lambda - cost(2,2))./(2*cost(2,3));
string1=mat2str(P1);
string2=mat2str(P2);
string3=mat2str(P1+P2);
set(handles.answer2_staticText,'String',...
['P1 = ',string1,char(10),...
'P2 = ',string2,char(10),'PT = ',string3]);
guidata(hObject, handles);
end
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Matt Tearle
Matt Tearle 2011-2-14
ah, i think i finally understand what's going on here. answer2_staticText isn't actually a static text uicontrol -- it's an editable text uicontrol, right? uicontrol of style 'text' doesn't have the multiline restriction; style 'edit' does.

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slumberk
slumberk 2011-2-14
@paulo and @matt: THX A LOT GUYZ!!! YOU BOTH REALY HELP ME HERE

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