Re: Calling DLLs from JMP

[chem engineer <chemical_engr@yahoo.com>]

G:

the 1 param limitation is a REAL limitation - and there is no 'dll' workaournd, in otherwords - there is no way to construct a DLL

which can get two params with the DLL call from JMP, unless you pass a string and the DLL decomposes ... but that is still 1 param.

 

This is a trick - that may work for you - if the DLL can read a text file once called the params can be passed indirectly.

Further - you can execute a remote system executable using a publically avail DLL called 'gz'. Check out this link, it is

a third party unsupported util for JMP.

 

http://www.aracnet.com/~cmorgan/gzdll_driver/help.html

The problem of one param requires either:

 

1)  Wrapper Approach ...  

Creating an executable shell or container for your DLL for which you pass a single param pointer ...

which then passes the pointer to give the list of params for the DLL execution implicitly in a file or

other data structure outside of JMP.

 

JMP -> Write complex instructions to text file or other data structure in Filesystem, call it "a.txt"

 

JMP -> DLL call to wrapper with single param; a pointer to "a.txt" -> DLL wrapper calls Exe or another DLL

giving it the param and works the instructions in "a.txt" -> results can be passed back via a files system result

 

2) Embedded string approach

Pass single param as a instruction set which is a delimited string

 

I know this problem well - it is a serious limitation in JMP which is not improved in the current version ... I dont know

if there are plans to imporve the problem.

 

Best regards,

Donald Palahnuk

ImClone System

Process Sciences

 

----- Original Message ----
From: "Gunter.Hartel@csl.com.au" <Gunter.Hartel@csl.com.au>
To: chemical_engr@yahoo.com
Sent: Thursday, September 14, 2006 11:45:49 PM
Subject: RE: [jmp-l] Calling DLLs from JMP

I have some data in NetCDF format that I want to bring into JMP.  There are some libraries available to handle netCDF files and I  was hoping to call them from within JMP to  extract data.  Right now I have to use utilities to extract the data to ascii and then read in the ascii files in JMP and merge them etc.  I saw in the guide though that JMP can only pass a single parameter to the DLL function, which means most of the existing functions wonʼt work for me, unless I modify the C code and re-compile a new DLL.  Even then it seems like it could be hard to work around the 1 parameter limitation.  Iʼve used DLLʼs from within S (predecessor of R) and that worked great.  

 

What has been you experience?

Thanks

Gunter

 

 

---

From: chem engineer [mailto:chemical_engr@yahoo.com]
Sent: Friday, September 15, 2006 1:38 PM
To: Hartel, Gunter AU/PKV
Subject: Re: [jmp-l] Calling DLLs from JMP

 

i have experience with this ... what are you trying to accomplish ?

----- Original Message ----
From: Emil M Friedman <emilfriedman@optonline.net>
To: jmp-l@lists.biostat.wustl.edu
Sent: Thursday, September 14, 2006 10:02:02 PM
Subject: Re: [jmp-l] Calling DLLs from JMP

I've never done that, but one of the times that I opened JMP today it proceeded to rapidly open JMP session after JMP session and sent me a weird message mentioning DLL's.  Around the time that I had 34 JMP sessions running simultaneously (no data tables in any of them) I rebooted.  (I'm not asking for an explanation.  Everything was fine after rebooting.  I've never seen that behavior before and hopefully won't see it again.)

--
Emil M Friedman, PhD
Bristol-Myers Squibb Company
Mail Stop 80-2-1A
PO Box 191
New Brunswick , NJ   08903-0191
emil.friedman@bms.com
emilfrie@alumni.princeton.edu
732-227-5608 (office)
216-287-0821 (cell)
http://www.statisticalconsulting.org/

----- Original Message -----

From: Gunter.Hartel@csl.com.au

To: jmp-l@lists.biostat.wustl.edu

Sent: Thursday, September 14, 2006 6:18 PM

Subject: [jmp-l] Calling DLLs from JMP

 

Dear JMPʼers

Have any of you written JSL that calls a DLL library?  If so, could you share your experience with me?  Is there any additional documentation beyond the scripting guide to help get this to work?

Thanks

Gunter

 

 

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This email and any attachments are confidential and may be subject to legal or other professional privilege. Any confidentiality or privilege is not waived or lost because this email has been sent to you by mistake. You should not read, copy, adapt, use or disclose them or their contents without authorisation. Any personal information in this email must be handled in accordance with the Privacy Act 1988 (Cth).

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Phone: +61 3 9389 1911 Fax: +61 3 9389 1434

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