# Cell Create

- Symmetry
- Volume
- Position
- Origin
- View

### x, y, z

Set the cell origin, always defined as the position of the node (000). For conventional, primitive, wigner and rhombus volumes, the origin is initially at the lower-left corner. For sphere and projection volumes, the origin is initially at the center. When the volume is projection, the origin cannot be changed.

    Example: <cell ... x="0.0" y="0.0" z="0.0"/> (default)
    (defined in GAMGI_MESA_CELL_X, GAMGI_MESA_CELL_Y and GAMGI_MESA_CELL_Z)
    Allowed values: real (optional, coupled)

### e1, e2, e3

Set the three Euler angles controlling the cell orientation. The first rotation (e1), around the initial y axis, must be between 0 and 180 degrees. The second rotation (e2), around the initial z axis, must be between 0 and 360 degrees. The third rotation (e3), around the final z axis, must be between 0 and 360.

By default (e1, e2 and e3 equal to zero), the first crystallographic vector is aligned along the x-axis, the second vector lies above, on the x-y plane, and the third vector has a positive z coordinate, thus pointing to the user (right-handed orientation).

    Example: <cell ... e1="0.0" e2="0.0" e3="0.0"/> (default)
    (defined in GAMGI_MESA_CELL_E1, GAMGI_MESA_CELL_E2 and GAMGI_MESA_CELL_e3)
    Allowed values: e1: 0.0 - 180.0, e2, e3: 0.0 - 360.0 (optional, coupled)

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