This PR adds a workaround URL that update_iers(). However, we also realized while testing this that update_iers() is intended to be run once at the start of the survey and then NEVER AGAIN. For all other things that need IERS-A, freeze_iers() should be called first.
This means that any errors resulting from attempts to download IERS-A in other packages are caused by those packages failing to properly call freeze_iers(), not from an error in desisurvey.
In addition, the Travis test matrix has been updated, and a command-line script to call update_iers() is added.
The existing iers_frozen.ecsv file is a few years old, but let's not update that until we make a collective, documented decision.
This PR adds a workaround URL that
update_iers(). However, we also realized while testing this thatupdate_iers()is intended to be run once at the start of the survey and then NEVER AGAIN. For all other things that need IERS-A,freeze_iers()should be called first.This means that any errors resulting from attempts to download IERS-A in other packages are caused by those packages failing to properly call
freeze_iers(), not from an error indesisurvey.In addition, the Travis test matrix has been updated, and a command-line script to call
update_iers()is added.The existing iers_frozen.ecsv file is a few years old, but let's not update that until we make a collective, documented decision.