MATLAB Central Newsreader - Matlab Compiler and paths

Matlab Compiler and paths

Bill — Sun, 01 Mar 2009 18:40:19 -0500

All,

After some success as a "getting started" person with the Matlab Compiler I have run into a snag when trying a "real" project:

1. I did need to set some path values to get the top level script to execute properly, but indeed it does.

2. I have built and packaged the project many times now and it "almost" runs.

3. The problem is that an "exist(filename)" statement does not find the file when I run the ".exe" version of the project.

4. The file does exist and, as an experiment, I added some code to prepend the path to the filename, and sure enough the ".exe" version did find the file when doing the "exist"

5. Unfortunatley, there are several areas where the "m" code assumes that the Matlab path structure will supply the path to individual file names.

It is almost as though the whole set of Matlab paths does not get included with the MCR.

Any ideas?

TIA,

Bill

Re: Matlab Compiler and paths

Bruno Luong — Sun, 01 Mar 2009 20:06:01 -0500

"Bill" <john.doe.nospam@mathworks.com> wrote in message <goekqj$m4m$1@fred.mathworks.com>...
> All,
>
> After some success as a "getting started" person with the Matlab Compiler I have run into a snag when trying a "real" project:
>
> 1. I did need to set some path values to get the top level script to execute properly, but indeed it does.
>
> 2. I have built and packaged the project many times now and it "almost" runs.
>
> 3. The problem is that an "exist(filename)" statement does not find the file when I run the ".exe" version of the project.
>
> 4. The file does exist and, as an experiment, I added some code to prepend the path to the filename, and sure enough the ".exe" version did find the file when doing the "exist"
>
> 5. Unfortunatley, there are several areas where the "m" code assumes that the Matlab path structure will supply the path to individual file names.
>
>
> It is almost as though the whole set of Matlab paths does not get included with the MCR.
>
> Any ideas?

I have read through your five comments and I do quite understand what in there!

Just one commen that might helpt: the default path when running an application in exe is the usually 2 level down from the location of the exe file. The folder is created to receive extracted encoded mfiles from the ctf.

When this is clear, you will be ready to fix any path issues after compilation.

It is also safer to use EXIST with second argument rather than single input.

Bruno

Re: Matlab Compiler and paths

Ashish Uthama — Mon, 02 Mar 2009 14:21:07 -0500

On Sun, 01 Mar 2009 13:40:19 -0500, Bill <john.doe.nospam@mathworks.com>
wrote:

> All,
>
> After some success as a "getting started" person with the Matlab
> Compiler I have run into a snag when trying a "real" project:
>
> 1. I did need to set some path values to get the top level script to
> execute properly, but indeed it does.
>
> 2. I have built and packaged the project many times now and it "almost"
> runs.
>
> 3. The problem is that an "exist(filename)" statement does not find the
> file when I run the ".exe" version of the project.
>
> 4. The file does exist and, as an experiment, I added some code to
> prepend the path to the filename, and sure enough the ".exe" version did
> find the file when doing the "exist"
>
> 5. Unfortunatley, there are several areas where the "m" code assumes
> that the Matlab path structure will supply the path to individual file
> names.
>
>
> It is almost as though the whole set of Matlab paths does not get
> included with the MCR.
>
> Any ideas?
>
> TIA,
>
> Bill

Have you included the file ('filename' in exist(filename)) in the project?

Re: Matlab Compiler and paths

Bill — Wed, 04 Mar 2009 15:32:02 -0500

Ashish,

The answer is NO. I'll bet that is the problem! I'll post a message if that is the case.

Thanks for the tip,

Bill

Re: Matlab Compiler and paths

Emanuele — Wed, 04 Mar 2009 16:38:01 -0500

Hi Bill, i have a problem ti run the .exe file.

What is the right path to run the .exe file

I have tried with
matlabroot\bin\win32\file.exe
Is right??

Thanks all in advance

Emanuele

Re: Matlab Compiler and paths

Bill — Wed, 04 Mar 2009 16:58:02 -0500

2 Things:

1. Ashish was correct, when I added all of the files that were referenced by the application, it ran correctly. A downside is that this added 16 Mbytes to my application size. This is what I want if I am deploying to a different computer, but not really what I want if those files already exist on my PC (or even the target PC). Oh well, all is OK for now.

2. Emanuele, you wrote the following:

"i have a problem ti run the .exe file. What is the right path to run the .exe file
I have tried with matlabroot\bin\win32\file.exe
Is right??"

Keeping in mind that I am a novice a this, as near as I can tell, the .exe file can be anywhere. In my case, I want it on a network drive, and it seemed to work fine from there for my application.

That being said, I would think there is some sort of "default pathing" that would permit the user to arrange the Matlab application .exe in the same folder as any data files and that those data files would be found on a "relative path" basis.

Bill