# follow_mode

Displace a geometry along a normal mode of a loaded hessian calculation.

hess := hessian(
structure(molecule=water)
xtb()
)

positive := follow_mode(
mode = 1
step_size = 1.0e-3 bohr
)

xtb()
)

This command can appear in the global context.

### Options

load

Name of result set of a previous hessian calculation.

This option is mandatory.

• The type is string
• There is no default value.
mode

Index of the normal mode that will be stepped along (indexing from 1).

This option is mandatory.

• The type is int
• There is no default value.
• The value must be positive
name

Specify the name of a set of results.

This option is deprecated.

• The type is string
• There is no default value.
print_level

Print level.

• The type is int
• There is no default value.
• The value must be one of:
• -2 - No output
• -1 - Minimum output
• 0 - Output that doesn't scale with system size
• 1 - Output that scales linearly with system size
• 2 - (Debugging) output that scales quadratically with system size
• 3 - (Debugging) output that scales cubically with system size
step_size

Specify the step size.

This option is mandatory.

• The type is quantity
• There is no default value.