How to execute and run a external program in matlab?

Hi everyone,

I'm trying to exexute an external program in matlab, I used

!ISLab2000IWS 1-INP.in2 (where ISLab2000IWS is the software, and 1-INP.in2 is the input file I want to run)

But it only opens the software window and load the input for me, it's not running the analysis. The window is shown below. The 'Run Analyze' button is under the 'Tools', I was wondering, how can I make it run automaticlly? Really appreciate it.

[per isakson]

What happens if you enter

ISLab2000IWS 1-INP.in2 

at the Windows command prompt?

[Qianyun Zhang]

I just tried, it didn't work.

ISLab2000IWS 1-INP.in2

Undefined function or variable 'ISLab2000IWS'.

[per isakson]

Where is the program, ISLab2000IWS , installed?

[Qianyun Zhang]

yes, it's in the same folder as my input file

[per isakson]

Make that folder the current folder and try

ISLab2000IWS 1-INP.in2 

again.

[Qianyun Zhang]

Yes, it is the current folder. But didn't work :(

[Walter Roberson]

Undefined function or variable is a message you would get from MATLAB. per asked you to run

ISLab2000IWS 1-INP.in2 

at the MS Windows command prompt, not the MATLAB command prompt.

I am having difficulty finding documentation on ISLAB2000, Lev Khazanovich et al . It clearly exists, but I cannot seem to locate a distribution or documentation point for it.

[Qianyun Zhang]

I just run the ISLab2000IWS 1-INP.in2 in Windows conmmand prompt, it pump up with the same as what I mentioned in my question. It opened the software and file, but it didn't actually run it. Thanks

[Walter Roberson]

As we do not have documentation on that program, all we can suggest is that you could use Java Robot class.

[per isakson]

"with the same [...] but it didn't actually run it"

• There is no reason to expect a different behavior when invoked from Matlab than from the MsWindows prompt.
• Look for "Command Line Commands" or similar in the documentation of ISLab2000IWS

[Qianyun Zhang]

Thanks for everyone!

Answer 1

[Steven Lord]

Agreeing with what others have said, if the external software doesn't provide a programmatic way to run it's likely to be difficult or impossible to automate its execution.

You could use the Java Robot class as Walter suggested to try to automatically click on the buttons, but figuring out the right place on screen to click could be challenging.

You could ask the authors of that external software if there is a programmatic interface as per isakson suggested.

Or depending on what you're trying to do, you may be able to use a different product to perform your analysis. A quick Google search found that this is likely a finite element analysis program for pavement analysis. While it doesn't look like we have an example specifically for pavement analysis in the list of Partial Differential Equation Toolbox examples you might want to skim the list to see if there are any that look like they might be adaptable to the type of analysis you want to perform.

Answer 2

[Vanitha]

% MATLAB program to simulate and detect gravitational waves from binary neutron stars

clc; clear; close all;

% Constants g = 6.67430e-11; % Gravitational constant (m^3/kg/s^2) c = 3e8; % Speed of light (m/s) m1 = 1.4 * 1.989e30; % Mass of first neutron star (kg) m2 = 1.4 * 1.989e30; % Mass of second neutron star (kg) d = 1e22; % Distance from Earth (m)

% Time vector t = linspace(0, 1, 1000); % Time in seconds

% Chirp mass M = ((m1*m2)^(3/5)) / ((m1 + m2)^(1/5));

% Gravitational wave frequency (simplified approximation) freq = (1/pi) * ((g * M)^(5/8)) / (c^(3/8) * (t + 1e-3).^(3/8));

% Generate gravitational wave signal h = (4 * g * M) / (d * c^2) .* cos(2 * pi * freq .* t);

% Add noise to simulate real detector data noise = 0.1 * randn(size(t)); detected_signal = h + noise;

% Plot the waveform figure; plot(t, detected_signal, 'b'); hold on; plot(t, h, 'r', 'LineWidth', 1.5); hold off; legend('Noisy Signal', 'Pure Gravitational Wave'); xlabel('Time (s)'); ylabel('Strain'); title('Simulated Gravitational Wave Detection'); grid on;