Various azimuths and dips at same depth

• empymod.bipole

  • In the source and receiver format [x, y, z, azimuth, dip], azimuth and dip can now be either single values, or the same number as the other coordinates.
  • Bugfix (in utils.get_abs): When different orientations were used exactly along the principal axes, at the same depth, only the first source was calculated [empymod#74].

Continuously in- or decreasing

This is a small appendix to v1.10.4: Depths can now be defined in increasing or decreasing order, as long as they are consistent. Model parameters have to be defined in the same order. Hence all these are possible:

• [-100, 0, 1000, 1050] -> left-handed system, low-to-high
• [100, 0, -1000, -1050] -> right-handed system, high-to-low
• [1050, 1000, 0, -100] -> left-handed system, high-to-low
• [-1050, -1000, 0, 100] -> right-handed system, low-to-high

Positive z down- or upwards

• New examples:
  • empymod can handle positive z down- or upwards (left-handed or right-handed coordinate systems; it was always possible, but not known nor documented). Adjusted documentation, docstrings, and added an example.
  • Example how to calculate the responses for the WalkTEM system.
• Minor things and bug fixes:
  • Change from relative to absolute imports.
  • Simplified releasing (no badges).
  • Python 3.8 is tested.
  • Fix: numpy now throws an error if the third argument of logspace is not an int, some casting was therefore necessary within the code.

Sphinx Gallery

• Move examples to an integrated Sphinx-Gallery, generated each time.
• Move from conda-channel prisae to conda-forge.
• Automatic deploy for PyPi and conda-forge.

Always EMArray

• Simplified and improved empymod.utils.EMArray. Now every returned array from the main modelling routines bipole, dipole, loop, and analytical is an EMArray with .amp- and .pha-attributes.
• Theme and documentation reworked, to be more streamlined with emg3d (for easier long-term maintenance).
• Travis now checks all the url's in the documentation, so there should be no broken links down the road. (Check is allowed to fail, it is visual QC.)
• Fixes to the setuptools_scm-implementation (MANIFEST.in).
• ROADMAP.rst moved to GitHub-Projects; MAINTENANCE.rst included in manual.

setuptools_scm

• Typos from v1.10.0; update example in model.loop.
• Implement setuptools_scm for versioning (adds git hashes for dev-versions).

Loop source and receiver

• New modelling routine model.loop to model the electromagnetic frequency- or time-domain field due to an arbitrary rotated, magnetic source consisting of an electric loop, measured by arbitrary rotated, finite electric or
  magnetic bipole receivers or arbitrary rotated magnetic receivers consisting of electric loops.
• Move copyright from «Dieter Werthmüller» to «The empymod Developers», to be more inclusive and open the project for new contributors.

Laplace

• Laplace-domain calculation: By providing a negative freq-value, the calculation is carried out in the real Laplace domain s = freq instead of the complex frequency domain s = 2i*pi*freq.

• Improvements to filter design and handling:

  • DigitalFilter now takes an argument (list of strings) for additional coefficients to the default j0, j1, sin, and cos.
  • fdesign can now be used with any name as attribute you want to describe the transform pair (until now it had to be either j0, j1, j2, sin, or cos).
  • The provided sine and cosine transform pairs in fdesign can now be asked to return the inverse pair (time to frequency).

• Other tiny improvements and bug fixes.

Scooby

• Use scooby for Versions (printinfo), change name to Report.
• DOC: Correct return statement if mrec=True.
• Typos and correct links for new asv/bench.
• Bump requirement to SciPy>=1.0.0, remove warning regarding memory leak in SciPy 0.19.0.

pts_per_dec for DLF are now floats

• pts_per_dec are now floats, not integers, which gives more flexibility.

• Bugfix: pts_per_dec for DLF was actually points per e, not per decade, as the natural logarithm was used.

• New Versions-class; improvement over the versions-function, as it automatically detects if it can print html or not.

• Maintenance: Update np.load in tests with allow_pickle=True for changes in numpy v1.16.3.

• Lots of changes to accommodate emg3d within the empymod-org:

  • Adjust website, move stuff from website into README.md.
  • /empymod/example-notebooks -> /empymod/empymod-examples.
  • /empymod/asv -> /empymod/empymod-asv (and therefore now available at empymod.github.io/empymod-asv).
  • /empymod/bench -> /empymod/empymod-bench.

• Move manual from empymod/__init__.py to the docs/manual.rst, and the references to its own file. Change reference style.

• Move credits for initial funding from the license-section of the manual to CREDITS.rst, where it belongs.