plAlloc2dGrid: Allocate a block of memory for use as a matrix of type PLFLT_MATRIX.

`plAlloc2dGrid`: Allocate a block of memory for use as a matrix of type PLFLT_MATRIX.
Prev | Chapter 19. The Specialized C/C++ API for PLplot | Next

#### `plAlloc2dGrid`: Allocate a block of memory for use as a matrix of type PLFLT_MATRIX.

`plAlloc2dGrid (` | f,
| nx,
| ny`)`;

Allocates the memory for a matrix of type PLFLT_MATRIX (organized as an Iliffe column vector of pointers to row vectors). As a result the matrix can be accessed using C/C++ syntax like `*f[i][j]`. The memory associated with this matrix must be freed by calling `plFree2dGrid` once it is no longer required.

`f` (`PLFLT_NC_MATRIX *`, output)

  If the allocation is a success, a pointer to a matrix (organized as an Iliffe column vector of pointers to row vectors) is returned. If the allocation is a failure, then the returned value of `f` will be NULL.

`nx, ny` (``PLINT``, input)

  Dimensions of matrix to be allocated.

This function is used in C examples 8, 9, 11, 14, 16, 20, 21, 22, 28, 30.

Prev | Up | Next
`plabort`: Error abort | Home | `plClearOpts`: Clear internal option table info structure.