# Create cartesian grids¶

To create a Cartesian Grid in the Main Menu select Model -> Construction -> Make Grid.

Three kinds of grid can be created:

## Simple cartesian grid¶

To create a simple cartesian grid, select radio button Simple: Dialogue Box for a Simple cartesian grid

The following data are required:

• nb X: The number of hexahedra along the X axis
• nb Y: The number of hexahedra along the Y axis
• nb Z: The number of hexahedra along the Z axis

The result of this action is: Simple Cartesian Grid

TUI command: Simple Cartesian Grid

## Uniform cartesian grid¶

To create an uniform cartesian grid, select radio button Uniform: Dialogue Box for an Uniform cartesian grid

The following data are required:

• origin: The vertex of the origin
• vec X : The X vector
• vec Y : The Y vector
• vec Z : The Z vector
• len X : The length of an hexahedra on the X axis
• len Y : The length of an hexahedra on the Y axis
• len Z : The length of an hexahedra on the Z axis
• nb X : The number of hexahedra on the X axis
• nb Y : The number of hexahedra on the Y axis
• nb Z : The number of hexahedra on the Z axis

Clicking on “Apply” on the previous dialog box will produce the following grid (Uniform hexahedra, different sizes on the three axis): Unfiorm cartesian grid

TUI command: Uniform Cartesian Grid

## Custom cartesian grid¶

To create a Custom cartesian grid, select radio button Custom: Dialogue Box for a Custom cartesian grid

The following data are required:

• origin: The vertex of the origin
• vec X : The X vector
• vec Y : The Y vector
• vec Z : The Z vector
• X : A list of x values in ascendant order
• Y : A list of y values in ascendant order
• Z : A list of z values in ascendant order

A value on each axis gives the length of an hexahedra on that axis from the origin of the grid. For example the first value in the list of x values is the length on X axis of the first hexahedra from the origin.

The result of this action is: Custom cartesian grid

TUI command: Custom Cartesian Grid