Looker has two ways to create a dashboard:
The first, and oldest, is to write dashboard LookML to define the details of each dashboard element, and to wrap them together (see [here] (http://www.looker.com/docs/sharing-and-visualization/creating-lookml-dashboards) for instructions on how to build a dashboard with LookML).
In Looker 3.2, we introduced a second type of dashboards: user defined dashboards (UDDs). These dashboards are entirely drag and drop, [are super easy to create] (http://www.looker.com/docs/exploring-data/building-dashboards), and can be just as powerful.
A question we often get is:
Where is the LookML for my dashboard?
The answer almost always requires a further question:
What kind of a dashboard is it?
If we’re talking LookML dashboards, the answer is easy. There will be a cog in the upper right hand corner of your dashboard with an option to Go to Dashboard LookML. This will take you to the LookML file that contains your dashboard’s LookML, and you’ll be off and running.
User defined dashboards
If we’re talking user defined dashboards, the answer is also easy, if more nuanced. The short answer is “There isn’t any”.
The more nuanced answer is that UDDs do not have any associated LookML. User defined dashboards are linked to Looks rather than LookML, so if you’d like to change visualization parameters, just use the Explore interface to edit your visualization (for more detail, check out the above link). You can rearrange the tiles and add filters just by clicking and dragging. You cannot, however, dig in to the LookML to tweak things.