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Airspace-Encounter-Models / em-core

Software and data used by multiple repositories in the Aerospace Encounter Models organization.
BSD 2-Clause "Simplified" License
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readAirspace incorrectly parses SFC lower altitude #1

Closed aweinert-MIT closed 4 years ago

aweinert-MIT commented 4 years ago

https://github.com/Airspace-Encounter-Models/em-core/blob/master/matlab/utilities-1stparty/airspace/readAirspace.m

There are cases where the LOWER_CODE is SFC and the LOWER_VAL is not 0, it is equal to 700 and sometimes 1200. I was looking through this document (attached) I found on the FAA website regarding Class E airspace and I notice that the floor for class E airspace is typically at 700 AGL and 1200 AGL. It seems then that if the LOWER_CODE is SFC, the resulting value (LOWER_VAL) is in AGL.

For example, consider Sibley Class E airspace. In the CSV, it is listed at LOWER_VAL = 700. When I look at the VFR sectional, this airspace is denoted by the purple magenta. According to online sources, this represents a class E transition area where the floor drops to 700 ft AGL, outside of the purple magenta, it is 1200 ft AGL.

aweinert-MIT commented 4 years ago

Bug fixed expected in upcoming pull request in July

aweinert-MIT commented 4 years ago

Addressed by 85f5a97