sc_set_dimension_from

Prototype

$integer = $node->sc_set_dimension_from(dimension,from)

Parameters

M/O = Mandatory/Optional

Return Type

integer

Description

sc_set_dimension_from sets the from index for the specified dimension returning 1 on success, or 0 otherwise. The dimension from index is not changed if the set fails.

The set can fail if:

• the node does not have dimensions or the dimension specified; or
• the resulting change in span causes the node to overlap with siblings or extend past the size of the parent.

Note that dimensions are numbered from 1 to N, left to right in the field name or region glob.

To change multiple dimension details at once, set the field name with sc_set_name or set the region glob with sc_set_glob.

Example

$space = &sc_get_space();

$region = $space->sc_add_region(-offset => 0, -size => '8B')

$field = $region->sc_add_field(-name => "FIELD_[x:1:8]", -size => '1B', ...);

$field->sc_set_dimension_from(1,0) or &sc_error("Can't reindex the dimension");

$field->sc_set_dimension_from(1,2) or &sc_error("Can't reindex the dimension");

The first set fails because the dimension the field span increases to 9B and won’t fit in the region.

The second set succeeds and reindexes the dimension to range from 2 to 8.