worc4021/geocalclib

Interface for MATLAB to use LRS library and derivative functionality.

geocalclib's Issues

Large facet enumeration problem

Hello,

I am trying to solve large facet enumeration problems with GeoCalcLib. It works great for fairly large problems -- I have a V-representation cone in 18 dimensions with 30 rays. The resulting H-representation has about 50,000 facets. As a check, I can solve a linear program over the H and V representations separately and they give the same answer.

However, I would like to add more rays to the V-representation and perform facet enumeration on, say, 40 rays in 18 dimensions. When I do this, GeoCalcLib/lrs produces an H-representation with about 4,000,000 facets. However, in my test of solving a linear program over the H and V representations, each gives a different result. In general, do you know if LRS struggles with very large outputs? Or could there be numerical precision issues at this scale - might you recommend changing any settings for large problems?

Thanks!

Cannot loading libgeocalc

Dear Rainer Manuel Schaich,

I'm trying to use your code to solve a vertex enumeration problem, i.e. given H-representation, find its V-representation. I follow the tutorial on the website and stuck when editing startup. I created a startup m-file in the file where I install the GeoCalcLib.
When I run
[,] = loadlibrary('libgeocalc','PATH/mainFunctions.h');
display('GeoCalc library loaded.');
the error "image not found" occurs. It seems that no library is found. I checked the src file which is the path points to. There is no file called libgeocalc.
Can you please tell me how to solve this?

Best,
Tianyu

Missing symbol error while loadlibrary

My installation steps were based on http://worc4021.github.io/jekyll/update/2016/04/08/welcome-to-jekyll.html:

1. Clone the git repo.
2. Create a folder files within the repo for INSTALLDIR.
3. Download the gmp zip folder into my home folder
4. Follow installation instructions given in https://gmplib.org/gmp-man-6.1.2.pdf.
   a. ./configure ABI=64
   b. make check
   c. sudo make install
   I confirmed that I have a file gmp.h in /usr/local/include and libgmp.a, libgmp.la, and libgmp.so.10.3.2 (3 files linking to it, including libgmp.so) in /usr/local/lib
5. I created User.make file in my local repo, GeoCalcLib with the correct paths:

MATLAB_ROOT=/usr/local/MATLAB/2017b/
INSTALLDIR pointing to files folder created in step 2.

6. I added the following line to startup
   addpath(genpath('/datafiles/git/Matlab/Library/GeoCalcLib/'))
   This will add the folder GeoCalcLib and GeoCalcLib/files as well
7. I can confirm that help LRS works.

However, [~,~] = loadlibrary('libgeocalc','path/to/GeoCalcLib/mainFunctions.h')) throws error attached below.

My system setup is Ubuntu 17.10 and the output of MATLAB's ver command is as follows:

Operating System: Linux 4.13.0-46-generic #51-Ubuntu SMP Tue Jun 12 12:36:29 UTC 2018 x86_64
Java Version: Java 1.8.0_121-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
MATLAB                                                Version 9.3 

My LD_LIBRARY_PATH is the default version.
My PATH now includes in addition to the default, /usr/local/lib and /usr/local/include.
My LD_PRELOAD is empty.

Any help regarding the installation is greatly appreciated! Thank you.

---

Error using loadlibrary
There was an error loading the library
"/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so"

Missing symbol '__gmpq_abs' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_add' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_canonicalize' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_clear' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_div' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_equal' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_get_d' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_get_den' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_get_num' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_init' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_mul' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_neg' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_set' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_set_d' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_set_den' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_set_num' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpq_set_ui' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_add' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_addmul' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_clear' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_cmp' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_cmp_ui' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_divexact' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_fac_ui' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_gcd' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_get_d' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_init' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_init_set_ui' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_mul' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_mul_ui' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_neg' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_out_str' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_set' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_set_si' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_sqrt' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol '__gmpz_sub' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mexErrMsgIdAndTxt' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mexErrMsgTxt' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mexPrintf' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxCalcSingleSubscript' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxCreateCellArray' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxCreateNumericMatrix' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxDestroyArray' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxGetData' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxGetField' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxGetM' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxGetN' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxGetPr' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxGetScalar' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxGetString' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsChar' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsComplex' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsDouble' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsEmpty' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsScalar' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsSparse' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsStruct' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxIsUint32' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxMalloc' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxSetCell' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxSetM' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxSetN' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'
Missing symbol 'mxSetPr' required by
'/datafiles/git/Matlab/Library/GeoCalcLib/libgeocalc.so'