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Changelog

0.9.0 (coming February 2022)

  • We are no longer supporting versions of Python before 3.6 (because I like f-strings).
  • You can now pass format string labels to striplog.plot(), e.g. '{colour} {lithology}'. These are passed to the Component summary method.
  • The Striplog constructor now creates Components if it is given miscellaneous data. If there are not components (e.g. "comp" fields in the CSV), then the description and either the provided Lexicon or the default one will be passed to the Interval constructor.
  • Reorganized and moved ``the documentation <https://code.agilescientific.com/striplog>``_ to make it a bit easier to follow.
  • You can plot Striplog's logo with striplog.logo.plot().

0.8.8 (January 2021)

  • Added Striplog.from_dict() to create a striplog from a dictionary with items like name: depth.
  • When reading a Petrel 'tops' file, you can pass a single function to apply to every quantity, not just a mapping of field names to functions. (You might do this to replace all -999.25 with np.nan, for example.) There's no way to do both at present, but if there's a need, please file an issue.
  • Updated the default lexicon with some 'modifiers' like 'silty', 'sandy', etc.
  • Lexicon._parse_description() is now a private static method (it was previously mangled which was a mistake). It can be called without instantiating a class to parse a piece of text. See the notebook, Parsing_a_description.ipynb.
  • Fixed a bug causing the default Lexicon to be a shallow copy, which was annoying.

0.8.7 (November 2020)

  • Breaking change: Striplog.extract() now returns a copy of the striplog instead of changing the striplog in place.
  • Added option to send actual data to Striplog.to_log() instead of index from lookup table.
  • Added a tutorial, Blocking_curves_with_striplog.ipynb.

0.8.6 (October 2020)

  • Multi-step Markov chains now work properly, respecting 'self-transitions'.
  • Added include_self property to the repr of a Markov chain object.
  • Added match_only argument to Legend.random()` to allow you to keep only certain properties in the components.
  • Component.from_text() will now use Lexicon.default() if you don't pass one in.

We started adding an experimental new feature; feedback welcome! Added Striplog.from_macrostrat() which takes a lat/lon location and returns a striplog in geological time or in depth below the surface at that location.

0.8.5 (May 2020)

  • Fixed sphinx documentation.
  • Documentation now includes all tutorial notebooks.

0.8.4 (April 2020)

  • Added label kwarg to striplog.plot(). Give it the name of a field in the primary component and it will be added to the plot as text. Experimental feature; might break with some sizes of striplog. Feedback welcome.
  • Fixed a bug in Striplog.hist() which produced the wrong colours and labels for the bars.

0.8.3 (July 2019)

  • Minor release. Updated tutorials and fixed some bugs.

0.8.2 (July 2019)

  • Added Striplog.shift() to allow you to shift all the tops and bases by some delta or by setting a new start.
  • Added striplog.markov.Markov_chain(). See the Markov_chain.ipynb notebook in tutorial to see how to use it. This is an experimental module. There might be an elegant way to add the Markov chain as an attribute/methods on Striplog objects, but I couldn't think of it.
  • Fixed a bug in Striplog.hist() which produced the wrong colours and labels for the bars.

0.8.1 (June 2019)

  • Added append, extend and pop methods to Striplog objects.
  • Breaking change: Changed the name of Striplog.__insert() to Striplog.insert() to match append(), extend() and pop().
  • Added binary morphology filters to Striplog object. These offer another way to filter intervals, and thus to simplify a binary striplog (one in which an attribute of the components contains only a single binary 'flag'). Operations include dilation, erosion, opening, and closing.
  • Fixed a bug in plot: it assumed the first interval in a striplog was the 'shallowest' and the last the deepest. But if intervals can overlap (which they can), then this is not a safe assumption. Now uses Striplog.start and Striplog.stop to decide.
  • Added mode keyword arg to anneal, allowing user to choose whether the gaps in the log are filled in by flooding upwards (that is, extend the interval below the gap upwards), flooding downwards (extend the upper interval), or flooding symmetrically into the middle from both above and below, meeting in the middle. (Note, you can also fill gaps with another component, using the fill() method.)
  • Added merge method to the Striplog. This allows you to merge overlapping intervals by precedence (rather than by blending the contents of the intervals). For example, you can choose to keep the thickest interval in all overlaps. If intervals have a date, you could keep the latest interval.
  • Added net_to_gross method to Striplog object. Give it a binary attribute and it will compute the ratio of intervals having that attribute as True to the total thickness.
  • Added a couple of notebooks to /tutorial.
  • Fixed a bug that allowed lists of intervals used to instantiate striplogs to be mutated.

0.8.0 (March 2019)

  • New point release because of breaking changes.
  • Breaking change: Striplog.prune() and Striplog.anneal() now return copies, so you can chain them.
  • Striplog.bar() makes a bar chart of the intervals, with optional sorting by thickness or any other key.
  • Breaking change: Striplog.hist() (which histogram() now calls) now makes a plot as well and returns the bars (or the axis, if you pass one in).
  • Striplog.merge_neighbours() performs a stepwise Interval.union() on all pairs of intervals, combining neighbours that have identical components. It is intended to be used after Striplog.anneal().

0.7.0 to 0.7.3

  • Improved test coverage.
  • Improved CSV writing.
  • Canstrat legend and ASCII file writing.
  • Striplog quality method.

0.6.0 to 0.6.1

  • Introduced Position object for expressing depths of intervals.
  • Custom string formatting for using with format().
  • Lots of new built-in legends.
  • Random legends for when you're in a hurry.
  • Lots more superpowers for intervals, including intersect, merge and union.
  • Hatching in decors.
  • HTML repr for legends and intervals.

0.5.0 to 0.5.6

  • Rocks are now Components.
  • Python 3 support.
  • Many bug fixes.
  • Test coverage.
  • Continuous integration.
  • Updated documentation.
  • Histograms (buggy).
  • Plot tests working.

0.4.7 and earlier

  • First releases for client.