search for: nmmin

Hi, I'm trying to get a toy program making use of nmmin to run successfully. I've gotten to the point of compiling. However, when I attempt to run my executable, I guess a bus error. I see that someone else has asked about using nmmin before <http://tolstoy.newcastle.edu.au/R/help/06/03/23944.html>, but I haven't come across any replies....

...t;tempY[3] = 872066; t->tempY[4] = 871729; t->tempY[5] = 868550; t->tempY[6] = 865100; t->tempY[7] = 862132; t->tempY[8] = 870266; t->tempY[9] = 870493; t->tempY[10] = 893980; t->tempY[11] = 952914; t->tempN = y; cout << fn(n,dpar,(void*)t)<<endl; nmmin(n, dpar, opar, &value, fn, &fail, abstol, intol, (void *)t, 1, 0.5, 2, 0, &fncount, 500); for(int aa = 0 ; aa < n; aa++) { cout<< opar[aa]<<","; } cout<<"\n"; return 0; } I run this code, It told me "Segmentation fault...

I am trying to use the R API to call optim functions (nmmin, vmmin, lbfgsb, etc.) through a C program but I couldn't find the shared library to link under the R-2.6.0 build which is compiled under Linux (REL5). main.cpp:35: undefined reference to `Rf_initEmbeddedR(int, char**)' main.cpp:41: undefined reference to `nmmin' Thanks in advance for...

Hi, I have read R's Writing Extensions manual and am still confused about how to use some of the routines there when I call from C. Specifically, I am writing a little test function which I will optimize using the nmmin function which underlies R's optim() with Nelder-Mead. I guess I wonder what library/header files I should be using. I was using R_ext/Applic.h and linking with libR but I can not get it to work. (Btw, I am using RHEL4/FC4 Linux). The function is very simple: all it does is calculate the sum o...

Dear all, I have been trying to use R's optimization routines from C and I have some questions. Specifically, I am testing the usage of nmmin which performs Nelder-Mead optimization in order to learn how to do the above exercise. I understand from the notes in Chapter 5 that the declaration for both optimfn as well as nmmin are included in the header file R_ext/Applic.h so I have included that. Is there anything else (definitions, etc)...

Hello, I'm working with the function optim() from stats package, and inside this function is called the function .Internal(optim(....)) and I want to get the code of this function which would help me to understand why the Nelder-Mead algorithm doesn't converge with my data. I'm working under Windows XP. Could you reply to this adress because I don't belong to the mailing list