Implementing an event calendar using Matrix Blocks

matrixCalendar.twig

{% set blocks = craft.lowblocks.startDate('< foo').endDate('<= bar') %}

{% set ownerIds = [] %}
{% for block in blocks %}
    {% set ownerIds = ownerIds|merge(block.ownerId) %}
{% endfor %}

{% set owners = craft.entries.id(ownerIds).indexBy('id') %}

{#

// owners is now an array of the owner EntryModels, keyed by the IDs of the owner entires.
// This makes it easier to call up a specific owner Entry later.
[
    1: EntryModel,
    2: EntryModel
]

#}

{% for block in blocks %}
    {{ block.startDate | date }}
    {{ owners[block.ownerId].title }}
{% endblock %}