How Can I Read and Write Matrices in GSL?

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SUMMARY

This discussion focuses on reading and writing matrices using the GNU Scientific Library (GSL). Key functions highlighted include double gsl_matrix_get(const gsl_matrix * m, size_t i, size_t j) for retrieving matrix elements and void gsl_matrix_set(gsl_matrix * m, size_t i, size_t j, double x) for setting matrix values. The confusion around binary format for matrix input/output is noted, with a request for simpler methods akin to standard C practices. Additionally, a query about computing double and multiple integrals in GSL is raised, indicating a gap in the available documentation.

PREREQUISITES
  • Understanding of GSL (GNU Scientific Library) functions
  • Familiarity with matrix operations in programming
  • Basic knowledge of C programming language
  • Awareness of error handling in C functions
NEXT STEPS
  • Research GSL documentation on matrix input/output formats
  • Explore examples of using gsl_matrix_get and gsl_matrix_set in practical applications
  • Investigate GSL capabilities for double and multiple integrals
  • Learn about error handling in GSL functions to manage out-of-bounds access
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Developers and researchers working with numerical methods, particularly those utilizing the GNU Scientific Library for matrix operations and integral computations.

gradnu
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Does anybody know how to read and write matrices in GSL. I am confused by what is given on the website. It says something about binary format which I have no idea about.
Isn't there any other simple way of reading the matrices as we do in 'C'?
 
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Function: double gsl_matrix_get (const gsl_matrix * m, size_t i, size_t j)
This function returns the (i,j)-th element of a matrix m. If i or j lie outside the allowed range of 0 to n1-1 and 0 to n2-1 then the error handler is invoked and 0 is returned.


Function: void gsl_matrix_set (gsl_matrix * m, size_t i, size_t j, double x)
This function sets the value of the (i,j)-th element of a matrix m to x. If i or j lies outside the allowed range of 0 to n1-1 and 0 to n2-1 then the error handler is invoked.
 
Thanks Clive
 
Hello
I have a question GSL about too. Does anybody know how to compute double and multiple integrals? I have not found it in gsl's manual. Thanks.
 

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