GRASS GIS 7 Programmer's Manual  7.9.dev(2021)-e5379bbd7
N_data_star Struct Reference

Matrix entries for a mass balance 5/7/9 star system. More...

`#include <N_pde.h>`

int type

int count

double C

double W

double E

double N

double S

double NE

double NW

double SE

double SW

double V

double T

double W_T

double E_T

double N_T

double S_T

double NE_T

double NW_T

double SE_T

double SW_T

double B

double W_B

double E_B

double N_B

double S_B

double NE_B

double NW_B

double SE_B

double SW_B

## Detailed Description

Matrix entries for a mass balance 5/7/9 star system.

Matrix entries for the mass balance of a 5 star system

The entries are center, east, west, north, south and the right side vector b of Ax = b. This system is typically used in 2d.

```N
|
W-- C --E
|
S
```

Matrix entries for the mass balance of a 7 star system

The entries are center, east, west, north, south, top, bottom and the right side vector b of Ax = b. This system is typically used in 3d.

```T N
|/
W-- C --E
/|
S B
```

Matrix entries for the mass balance of a 9 star system

The entries are center, east, west, north, south, north-east, south-east, north-wast, south-west and the right side vector b of Ax = b. This system is typically used in 2d.

```NW  N  NE
\ | /
W-- C --E
/ | \
SW  S  SE
```

Matrix entries for the mass balance of a 27 star system

The entries are center, east, west, north, south, north-east, south-east, north-wast, south-west, same for top and bottom and the right side vector b of Ax = b. This system is typically used in 2d.

```top:
NW_T N_Z NE_T
\ | /
W_T-- T --E_T
/ | \
SW_T S_T SE_T

center:
NW  N  NE
\ | /
W-- C --E
/ | \
SW  S  SE

bottom:
NW_B N_B NE_B
\ | /
W_B-- B --E_B
/ | \
SW_B S_B SE_B
```

Definition at line 272 of file N_pde.h.

## ◆ B

 double N_data_star::B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star(), and N_create_7star().

## ◆ C

 double N_data_star::C

Definition at line 276 of file N_pde.h.

## ◆ count

 int N_data_star::count

Definition at line 275 of file N_pde.h.

## ◆ E

 double N_data_star::E

Definition at line 276 of file N_pde.h.

## ◆ E_B

 double N_data_star::E_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ E_T

 double N_data_star::E_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

## ◆ N

 double N_data_star::N

Definition at line 276 of file N_pde.h.

## ◆ N_B

 double N_data_star::N_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ N_T

 double N_data_star::N_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

## ◆ NE

 double N_data_star::NE

Definition at line 276 of file N_pde.h.

Referenced by N_callback_template_2d(), N_create_27star(), and N_create_9star().

## ◆ NE_B

 double N_data_star::NE_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ NE_T

 double N_data_star::NE_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

## ◆ NW

 double N_data_star::NW

Definition at line 276 of file N_pde.h.

Referenced by N_callback_template_2d(), N_create_27star(), and N_create_9star().

## ◆ NW_B

 double N_data_star::NW_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ NW_T

 double N_data_star::NW_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

## ◆ S

 double N_data_star::S

Definition at line 276 of file N_pde.h.

## ◆ S_B

 double N_data_star::S_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ S_T

 double N_data_star::S_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

## ◆ SE

 double N_data_star::SE

Definition at line 276 of file N_pde.h.

Referenced by N_callback_template_2d(), N_create_27star(), and N_create_9star().

## ◆ SE_B

 double N_data_star::SE_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ SE_T

 double N_data_star::SE_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

## ◆ SW

 double N_data_star::SW

Definition at line 276 of file N_pde.h.

Referenced by N_callback_template_2d(), N_create_27star(), and N_create_9star().

## ◆ SW_B

 double N_data_star::SW_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ SW_T

 double N_data_star::SW_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

## ◆ T

 double N_data_star::T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star(), and N_create_7star().

## ◆ type

 int N_data_star::type

Definition at line 274 of file N_pde.h.

Referenced by N_alloc_27star(), N_alloc_5star(), N_alloc_7star(), and N_alloc_9star().

## ◆ V

 double N_data_star::V

Definition at line 276 of file N_pde.h.

## ◆ W

 double N_data_star::W

Definition at line 276 of file N_pde.h.

## ◆ W_B

 double N_data_star::W_B

Definition at line 280 of file N_pde.h.

Referenced by N_create_27star().

## ◆ W_T

 double N_data_star::W_T

Definition at line 278 of file N_pde.h.

Referenced by N_create_27star().

The documentation for this struct was generated from the following file: