IsrTask has code to construct a linearizer (ip.isr.linearize.LinearizeBase) from Butler datasets. However, this code cannot be used at present in Gen 3 because:
- IsrTask does not have a PrerequisiteInput for linearizer data
- it is not clear where this data should come from in a new DECam repository. See discussions on #dm-middleware on March 16 and March 23. (In Gen 2, the linearizer is a virtual dataset handled by the CameraMapper, but everybody agrees that in Gen 3 it should be stored in the repository proper.)
Please provide a way to make the linearizer data available in Gen 3 DECam repositories, both in from-scratch repositories (see
DM-21862) and in repositories converted from Gen 2.