unusual problem with an unusual solution

i use these 2 codes:

cprintf.m: http://www.mathworks.nl/matlabcentral/fileexchange/24093-cprintf-display-formatted-colored-text-in-the-command-window

waitinput.m: http://www.mathworks.com/matlabcentral/fileexchange/28881-waitinput

i use these functions together, but after running matlab hangs. i fund that 'close' command in line '69' of waitinput.m caused this that while i delete this command, matlab not hangs but it cause its problems.

i found also an unusual solution is to put a command between cprintf.m calling and waitinput.m function. this commands is:

NET.addAssembly('System.Speech');
  speaker = System.Speech.Synthesis.SpeechSynthesizer();
  speaker.Rate = 1;
  speaker.Volume = 100;
  speaker.Speak('hello');

my program is:

clc,clear all
t=5;
 cprintf('blue','in %ds type 1 to plot 3 signals in one figure', t);

sel=waitinput('>>',t);
if sel == 1;
figure, plot((1:10),'c')
hold on
plot((5:10),'k')
plot(rand(100,1),'r')
hold off; 
legend('a','b','c')
end

%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

     NET.addAssembly('System.Speech');
    speaker = System.Speech.Synthesis.SpeechSynthesizer();
    speaker.Rate = 1;
    speaker.Volume = 100;
    speaker.Speak('');
  %++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

      cprintf('blue','in %ds type 2 to plot 3 signals separately', t);

sel=waitinput('>>',t);
if sel == 2;
        subplot(311)
plot(rand(100,1),'r')
subplot(312)
bar(rand(5,1),'c')
subplot(313)
semilogy(1:10)
end

%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

     NET.addAssembly('System.Speech');
    speaker = System.Speech.Synthesis.SpeechSynthesizer();
    speaker.Rate = 1;
    speaker.Volume = 100;
    speaker.Speak('');
  %++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

      cprintf('g','**************************************************************************************')
       fprintf(1,repmat('\n',1,1));

now when i delete this command between of these 2 (waitinput and cprintf) matlab hangs (because of 'close' command in line 69 of waitinput.m but i dont know for what). i need one of these:

1-finding cause of the problem and solving it

or

2-puting another command between cprintf and waitinput instead of 'NET.addAssembly('System.Speech');' because in some PCs the framework doesn't install.

please give me a hand in one of this way

[Oleg Komarov]

If I run your MATLAB only code it doesn't hang.

[mohammad]

you mean with running the above in your MATLAB, it doesn't hang?

but please try without this commands:

NET.addAssembly('System.Speech');

speaker = System.Speech.Synthesis.SpeechSynthesizer();

speaker.Rate = 1;

speaker.Volume = 100;

speaker.Speak('');

[Oleg Komarov]

I tried w/o.

[mohammad]

but it hangs in other PC too, matlab2009a

[Grzegorz Knor]

Matlab doesn't hang on my PC too.

Line close(fh) in waitinput.m just close invisible, auxiliary figure.

Answer 1

[Oleg Komarov]

An alternative to your code:

% Use Java's robot

import java.awt.*;
rob = Robot;

% Setup timer that will abort input in 5 seconds

sec = 5;
t   = timer('StartDelay',sec,'TasksToExecute',1);
set(t,'TimerFcn',['rob.keyPress(java.awt.event.KeyEvent.VK_ENTER);'...
                  'rob.keyRelease(java.awt.event.KeyEvent.VK_ENTER);'])

% Start and run till timer executes it first call in 5 seconds

start(t)
while strcmp(get(t,'Running'),'on')
    out = input(sprintf('In %ds type 1 to plot 3 signals: ',sec));
    if out == 1
        plot(1:10,1:10,'c',1:6,5:10,'k',1:100,rand(100,1),'r')
        legend('a','b','c')
        stop(t)
        break
    end
end

If you want to use cprintf then replace out = input... with:

cprintf('blue','In %ds type 1 to plot 3 signals: ',sec);
out = input('');

EDIT

Hardcoding every Java call in the TimerFcn:

function foo(sec)

t   = timer('StartDelay',sec,'TasksToExecute',1);
set(t,'TimerFcn',['rob = java.awt.Robot;',...
                  'rob.keyPress(java.awt.event.KeyEvent.VK_ENTER);'...
                  'rob.keyRelease(java.awt.event.KeyEvent.VK_ENTER);'])

...

end

[Grzegorz Knor]

If you have installed Java properly there should be no problem with Robot class.

What is the output of the command ver on your PC?

[mohammad]

so nice

in function m-file cant use 'rob = Robot;', what must i do?

when use in a function, warning is:??? Error while evaluating TimerFcn for timer 'timer-47'

Undefined variable "rob" or class "rob.keyPress".

[mohammad]

Dear Grzegorz

when i use this in a common m-file there is no problem and works but when i copy and paste exactly the same code in a function m-file it gives warning

[Oleg Komarov]

See edit.

[mohammad]

thanks a lot, works perfect

only i wish that when it request typing 1 or 2 and its going countdown, by pushing 'enter' goes to next line (command) without continuing countdown

[Oleg Komarov]

Add within the while:

elseif isempty(out)

stop(t)

break

end

Answer 2

[mohammad]

Dear Grzegorz do you have problem when running this :

clc,clear all
  t=5;
   cprintf('blue','in %ds type 1 to plot 3 signals in one figure', t);

sel=waitinput('>>',t);
if sel == 1;
figure, plot((1:10),'c')
hold on
plot((5:10),'k')
plot(rand(100,1),'r')
hold off; 
legend('a','b','c')
end

        cprintf('blue','in %ds type 2 to plot 3 signals separately', t);

sel=waitinput('>>',t);
if sel == 2;
        subplot(311)
plot(rand(100,1),'r')
subplot(312)
bar(rand(5,1),'c')
subplot(313)
semilogy(1:10)
end
          cprintf('g','**************************************************************************************')
       fprintf(1,repmat('\n',1,1));

[Grzegorz Knor]

nope... it's OK.

BTW, my output from ver:

MATLAB Version 7.10.0.499 (R2010a)

Operating System: Linux 2.6.38-11-generic-pae #48-Ubuntu SMP Fri Jul 29 20:51:21 UTC 2011 i686

Java VM Version: Java 1.6.0_12-b04 with Sun Microsystems Inc. Java HotSpot(TM) Client VM mixed mode

[mohammad]

thanks, i think i must change MATLAB version

your code is really nice and need no extra thing

i appreciate you for this

Answer 3

[Grzegorz Knor]

OK. There is problem with rob.keyPress in Oleg Komarov answer. When the time comes to an end an error occurs. So if you want to use this solution you have to write function that supports this case.

But I still can not trace the error of waitinput.

[Oleg Komarov]

Edited to include in fcn.

[mohammad]

OK you are right

i have no problem with 2010b, 7.11

thanks a lot

[mohammad]

thanks a lot Oleg, works perfect

only i wish that when it request typing 1 or 2 and its going countdown, by pushing 'enter' goes to next line (command) without continuing countdown