| Re: interface between IDL and Matlab [message #58128] |
Tue, 22 January 2008 11:56 |
Rich Younger
Messages: 3
Registered: January 2008
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Junior Member |
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Hi Angie,
Matlab reads HDF 4 and 5 very well (I understand .mat files are actually
HDF). If you don't need tight integration between IDL and Matlab, you
could throw together some routines to write out your processed data sets
in HDF and read them back in Matlab. And of course, this wouldn't be a
full answer without the requisite Fanning genuflection:
http://www.dfanning.com/tips/hdf_documentation.html
Rich
ChiChiRuiz@gmail.com wrote:
> Hi,
>
> I've been using IDL for data processing/analysis, so most of my code
> (data readers/writers, and utility code) are in IDL. However, lately
> I was asked to explore possibility to use Matlab's statistical
> visualization toolbox. I don't want to re-write my data processing
> code in matlab or write my own statistical visualization in IDL, what
> other options do I have? Is there a way to call Matlab from IDL or
> vice versa? Thanks in advance.
>
> -Angie
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| Re: interface between IDL and Matlab [message #58131 is a reply to message #58128] |
Tue, 22 January 2008 10:16  |
jeffnettles4870
Messages: 111
Registered: October 2006
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Senior Member |
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On Jan 22, 1:13 pm, jeffnettles4...@gmail.com wrote:
> On Jan 22, 12:30 pm, "ChiChiR...@gmail.com" <ChiChiR...@gmail.com>
> wrote:
>
>> Hi,
>
>> I've been using IDL for data processing/analysis, so most of my code
>> (data readers/writers, and utility code) are in IDL. However, lately
>> I was asked to explore possibility to use Matlab's statistical
>> visualization toolbox. I don't want to re-write my data processing
>> code in matlab or write my own statistical visualization in IDL, what
>> other options do I have? Is there a way to call Matlab from IDL or
>> vice versa? Thanks in advance.
>
>> -Angie
>
> If you're on windows you could set up a link between the two programs
> using ActiveX/COM routines. Someone posted some sample code on this
> group a few years ago that might help get you started on that. You
> might try searching this group for the code. Also, although I can't
> put my hands on it right now, I do have a .mat file reader written in
> IDL that I downloaded from the web - from APL I think?? Not sure if
> that would be helpful or not....
>
> Jeff
I should note, however, that I think the .mat file reader i have
(somewhere) only reads older .mat files - if the file format
specifcation has changed the code might not work.
Jeff
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| Re: interface between IDL and Matlab [message #58132 is a reply to message #58131] |
Tue, 22 January 2008 10:13 |
jeffnettles4870
Messages: 111
Registered: October 2006
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Senior Member |
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On Jan 22, 12:30 pm, "ChiChiR...@gmail.com" <ChiChiR...@gmail.com>
wrote:
> Hi,
>
> I've been using IDL for data processing/analysis, so most of my code
> (data readers/writers, and utility code) are in IDL. However, lately
> I was asked to explore possibility to use Matlab's statistical
> visualization toolbox. I don't want to re-write my data processing
> code in matlab or write my own statistical visualization in IDL, what
> other options do I have? Is there a way to call Matlab from IDL or
> vice versa? Thanks in advance.
>
> -Angie
If you're on windows you could set up a link between the two programs
using ActiveX/COM routines. Someone posted some sample code on this
group a few years ago that might help get you started on that. You
might try searching this group for the code. Also, although I can't
put my hands on it right now, I do have a .mat file reader written in
IDL that I downloaded from the web - from APL I think?? Not sure if
that would be helpful or not....
Jeff
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| Re: interface between IDL and Matlab [message #58134 is a reply to message #58132] |
Tue, 22 January 2008 10:08 |
Abraham campbell
Messages: 10
Registered: January 2008
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Junior Member |
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ChiChiRuiz@gmail.com wrote:
> Hi,
>
> I've been using IDL for data processing/analysis, so most of my code
> (data readers/writers, and utility code) are in IDL. However, lately
> I was asked to explore possibility to use Matlab's statistical
> visualization toolbox. I don't want to re-write my data processing
> code in matlab or write my own statistical visualization in IDL, what
> other options do I have? Is there a way to call Matlab from IDL or
> vice versa? Thanks in advance.
>
> -Angie
If you are on Windows, there might be a way. I believe that Matlab has
an ActiveX control that gives you access to it. So, you could use the
IDL-COM import subsystem to create an instance of the Matlab ActiveX
control, and issue commands to it from IDL...though, marshaling data
back and forth might be tricky. COM data types are fickle; and, the
implementation of a particular COM/ActiveX control might limit the
supported COM data types.
If you are on Unix, you might have to create a custom IDL DLM that
accesses Matlab via entry points in a shared library, or some other
Matlab mechanism for C-callable access.
Abraham
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