“The Poet in Her Bedroom,” a 32-minute program, is the first volume of the television series “Angles of a Landscape: Perspectives on Emily Dickinson,” which explores little-known aspects of Dickinson’s life and work. Now widely assigned to the first rank of American poets, Emily Dickinson (1830-1886) was unknown and mostly unpublished in her lifetime. Since her death well over a century ago, nearly 1800 of her lyric poems have been discovered, published, and translated into dozens of languages. The poet never married and eventually confined herself to her father’s house and grounds. Nonetheless Dickinson lived a rich and immensely productive creative life.