Mex function
in [Matlab]
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From: kk KKsingh on 20 May 2010 23:37 Although I know how to use simple mex functions, But I am not able to figure out how nfft package which consist of matlab interface runs ! Situation 1. I already put the nfft package in matlab path and also its on my linux server i checked it by running C program 2. I have nfftmex.c in the folder and few m files ! When i run example file simple_test it give me error indicating Error in nfft_init_1d at 23 p = nfftmex('init_1d',N,M); Error in simple test at 35 plan = nfft_init_1d.m and 3. When i click this error message it gives open .m file having these two lines function p = nfft_init_1d(N,M) p = nfftmex('init_1d',N,M); When i use nfft libray with gcc it works, but when i use it with matlab it gives me above error! I set the path for nfft libray with matlab using file .> sethpath> included nfft folder with all subfolders so i suppose i have included all header files But still not working ..NFFT libray is common scientific libray just wondering if any one using out there
From: Walter Roberson on 20 May 2010 23:42 kk KKsingh wrote: > 2. I have nfftmex.c in the folder and few m files ! When i run example > file simple_test it give me error indicating Error in nfft_init_1d at 23 > p = nfftmex('init_1d',N,M); Just "Error" and the location, and it doesn't say what the error is?
From: kk KKsingh on 21 May 2010 02:17 Walter Roberson <roberson(a)hushmail.com> wrote in message <DinJn.8844$%u7.8838(a)newsfe14.iad>... > kk KKsingh wrote: > > > 2. I have nfftmex.c in the folder and few m files ! When i run example > > file simple_test it give me error indicating Error in nfft_init_1d at 23 > > p = nfftmex('init_1d',N,M); > > Just "Error" and the location, and it doesn't say what the error is? oh yes sorry ! Following is the error Attempt to execute Script nfftmex as a function /path/..../nfftmex.m Error in nfft_init_1d at 23 p = nfftmex('init_1d',N,M); Error in simple test at 35 plan =nfft_init_1d(N,M); simple_test is the file i am trying to run kk
From: Walter Roberson on 21 May 2010 02:36 kk KKsingh wrote: > oh yes sorry ! Following is the error > > Attempt to execute Script nfftmex as a function > /path/..../nfftmex.m > > Error in nfft_init_1d at 23 > p = nfftmex('init_1d',N,M); That certainly tries to use nfftmex as a function. What are the first few lines of nfftmex.m ? If it is just the documentation, then the error you are seeing would be consistent with it not finding the mex object file in the path. The mex object file should be in the same directory as the documentation so that the help information is found. http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_prog/f10-60956.html#f10-60987 See "Precedence Rules" and "File Precedence" there.
From: kk KKsingh on 21 May 2010 04:18
Walter Roberson <roberson(a)hushmail.com> wrote in message <0SpJn.36306$304.11049(a)newsfe12.iad>... > kk KKsingh wrote: > > > oh yes sorry ! Following is the error > > > > Attempt to execute Script nfftmex as a function > > /path/..../nfftmex.m > > > > Error in nfft_init_1d at 23 > > p = nfftmex('init_1d',N,M); > > That certainly tries to use nfftmex as a function. What are the first > few lines of nfftmex.m ? If it is just the documentation, then the error > you are seeing would be consistent with it not finding the mex object > file in the path. The mex object file should be in the same directory as > the documentation so that the help information is found. > > http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_prog/f10-60956.html#f10-60987 > > See "Precedence Rules" and "File Precedence" there. I am sure if i get ur point ! I belive you are saying thats it is using nfftmex as a function ! And you are right nfftmex,m is just a document file.....there is file nfftmex.c in the folder..... I am running following script as test script...and i am getting error on the third line % number of nodes M = 3; % nodes x=rand(1,M)-0.5; % Create plan. plan = nfft_init_1d(N,M); nfft_init_1d.m is a another file function p = nfft_init_1d(N,M) p = nfftmex('init_1d',N,M); And nfftmex.c is my file..... So how should i run this file....all files are in the path.......which i added using set path do i need to compile like mex nfftmex.c..its also giiving me error that compilation fails when i do that its not able to find few files nfftmex.c;27;18:imex.h no file or directory nfftmex.c;30;26:mexversion.c no file or directory after this 200 lines of syntax error where are these two header files ..i already put the whole libray in path using path=(path,'/ram/unixserver/matlab') and it is at end of search path which i checked using path in command prompt |