feature based algorithms
Instead of algorithms which handle both whole layers/groups
of features/individual features, we leave the whole layer
and group of features handling to the "Minimum bounding
geometry" algorithm.
The feature-by-feature algorithms are now native c++
algorithms.
This affects:
- bounding boxes
- convex hulls
- minimum enclosing circle
- minimum oriented rectangles
This algorithm creates geometries which enclose the features
from an input layer.
Numerous enclosing geometry types are supported, including
bounding boxes (envelopes), oriented rectangles, circles and
convex hulls.
Optionally, the features can be grouped by a field. If set,
this causes the output layer to contain one feature per grouped
value with a minimal geometry covering just the features with
matching values.
Also modify alg to export a vector table of candidates instead of
a HTML list, since a vector table is more useful inside of
models and can be used for further analysis steps.
processing tests
Some algorithms will return results in different orders, e.g.
due to the use of dicts or other methods which do not guarantee
a fixed return order.
Using a primary key to do the feature match allows us to flexibly
handle these situations and provide tests for these algorithms.
Differences in gdal libraries mean the hash value may differ between
platforms. Allow multiple acceptable hashes to be listed for
expected test results
Improvements:
- Maintain Z/M values
- Keep original data type for group/order fields
- Group field is optional
- Added unit tests
- Don't export text files for features by default
Improvements:
- transparent reprojection to match hub/spoke CRS
- keep all attributes from matched hub/spoke features
- don't break after matching one hub point to spoke - instead
join ALL hub/spoke points with matching id values
Improvements:
- slight optimisation to feature requests - don't request attributes
which are not used
- Remove "method" param. Now the decision to group by field or
not is made only on whether a class field was selected or not
