frencil / eclipsescraper Goto Github PK

Dear Sir,
i am confused about the installation error when I setup the eclipsescraper library.
The error message is" AttributeError: 'module' object has no attribute 'EclipseTrack'".
I have already installed the "Python CZML reader/writer", and I cannot figure out this problem now.
So, would you like to give me some advice? And I really appreciate it.
Good day

Regions for eclipse events, currently detected in the getRegions() method, are done so crudely. Regions are defined strictly as south-to-north/west-to-east limits such that each region is a quadrangle with 90° corners. This coarse approach leads to some regions extending over areas that shouldn't be included, and these are then picked up in region strings.

A better approach would be to use any of the handful of Python libraries that allow for defining geographical shapes and detecting if a point is inside that shape or not. This may also prove to be an optimization if a library is available that can efficiently determine if two arbitrary shapes on the surface of a spheroid intersect (by defining the an entire eclipse track as a closed shape for the intersection test).

As described in EclipseTracks Issue #9:

Besselian elements are available on all NASA eclipse pages (example). Using these data (as opposed to surface-level derived track data) will allow for more accurate umbral shadow tracing, more accurate limit lines with arbitrarily many points, penumbral shadow modeling, etc.

This is a BIG task as modeling Besselian elements within a WGS-84 ellipsoid model of the earth is much more advanced Python and CesiumJS.

In the context of this library a reasonable progression of steps might look like this:

1. Scrape Besselian elements for an arbitrary eclipse event (in addition to compiled tables)
2. Model the umbral and penumbral shadow cones and fundamental plane in python data structures
3. Generate the central track polyline from the Besselian elements at the same time intervals as a proof of concept
4. Generate north and south limit polylines and an accurate umbral shadow