SimPEG 0.15.1 Release Notes

August 27th, 2021

This patch release contains several small bug fixes and improvements to the code base.

Updates

We now have a simple depth weighting function that can be used as cell weights for inversions. It is based off of the common potential fields definition:

wz = 1/(z - z_0)**(q/2)

The way SimPEG handles the definition of standard deviation calculated from the mix of relative error and noise levels is slightly changed to respect a more statistically accurate combination of the two components. It is now:

standard_deviation = sqrt(noise_level**2 + (relative_error * abs(d_obs))**2)

In addition,

• Removed a bit of dead code

• Fixed some typos in documentation

• Removed all references to old numpy matrix class and replaced with appropriate array functions.

• Added clarification to the gravity examples explaining why SimPEG’s gravity module looks backwards.

• removed some internal references to deprecated properties

Contributors

This is a combination of contributors and reviewers who’ve made contributions towards this release (in no particular order).

• @thast

• @jcapriot

• @xiaolongw1223

• @lheagy

• @domfournier

• @prisae

Pull requests

• #1004: Depth weighting function in “model_utils.py”

• #1009: Fix PGI gallery example

• #1016: Remove dead code

• #1019: Update receivers.py

• #1022: Change definition of standard deviation

• #1024: Add notes to gravity examples

• #1025: Updates to fix the test errors

• #1026: Replace np.matlib.repmat by np.tile

• #1027: Replace np.matrix by regular ndarrays

• #1029: Fix Typo in static_utils.py

• #1034: rename .freqs to frequencies

• #1035: 0.15.1 Release Notes