Abstract: Automatic generation and insertion of operations into a timeline of operations via interactions with a data visualization. A timeline structure comprising a plurality of operation records that identify successive operations performed against a table of data in response to user inputs is maintained. A data visualization is presented that presents a portion of the table of data in a particular state after a most recent operation is performed. One or more user inputs are received via user interaction with the data visualization. An operation against the table of data is performed to change the state of the table of data from the particular state to a new state. A new data visualization is presented that presents a portion of the table of data in the new state, and the timeline structure is altered to reflect the operation performed against the table of data.