# \#map-projection **URL:** https://openplanetary.discourse.group/tag/map-projection/5.md [Latest](https://openplanetary.discourse.group/latest.md) · [Categories](https://openplanetary.discourse.group/categories.md) · [Tags](https://openplanetary.discourse.group/tags.md) --- ## [Clarifying the Equirectangular projection for PDS4](https://openplanetary.discourse.group/t/clarifying-the-equirectangular-projection-for-pds4/205)
**Author:** [@thare](https://openplanetary.discourse.group/u/thare)\ **Replies:** 0\ **Last updated:** [November 6, 2019, 4:35pm UTC](https://openplanetary.discourse.group/t/clarifying-the-equirectangular-projection-for-pds4/205 "2019-11-06T16:35:38Z")
With the advent of PDS4 there continues to be confusion for the Equirectangular (Equidistant Cylindrical). First depending on the projection implementation this projection can have 3 parameters. Note for planetary we do…