Data region definions

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David Taylor

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Aug 14, 2021, 4:07:08 PMAug 14
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What are the data region definitions for the USA terrain and IFR data sets?

The labels suggest they may be organized in the same way that the chart supplements are (NE, SW, etc.),
AFD_Index.jpg

However, (for example) I find the low IFR chart for the Avare's SW region has an eastern boundary somewhere in UT/AZ.  Colorado is not part of the SW data set as suggested by the region definition for SW Chart supplements.

Screenshot_20210814-140138_Avare.jpg

Let's read the in-app help:
"... and online FAA chart reference maps to help you select Downloads in Avare."
Ok, here is the FAA's chart coverage definitions for the low IFR charts:

Low_Index_US.jpg

No hint of tidy boundaries based on compass points as the Avare data regions are named.   

Any guidance to offer?  Where are the Avare data boundaries documented?

Thanks!
Dave

Zubair Khan

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Aug 14, 2021, 8:42:37 PMAug 14
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Hi Dave
The boundaries are defined in code. See the code at GitHub project Avare sec/main/java/com.ds.avare/place/Boundaries.java


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David Taylor

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Aug 15, 2021, 3:16:24 PMAug 15
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Ooh, point data!  I can work with that.  Let's see, there's a GIS developer hat around here somewhere...

Anyone may use these images as they wish.  Maybe they could be incorporated into the app or help material?

Here's a generic index for: en route high/low, elevations & shaded relief.
 generic-index.png

Here's the Canada grid index:
canada-grid-index.png


Here's the Sectional index:
sectional-index.png


Here's the WAC index:
wac-index.png

David Taylor

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Aug 15, 2021, 3:36:44 PMAug 15
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Here's a Canada grid index with a Lambert projection.  Less distortion at high latitudes.
 canada-grid-index-lambert.png

Zubair Khan

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Aug 15, 2021, 7:49:13 PMAug 15
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Great. Will be added to the next build.
Thanks a lot.



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On Aug 15, 2021, 3:36 PM, David Taylor < dgt....@gmail.com> wrote:

Here's a Canada grid index with a Lambert projection.  Less distortion at high latitudes.
 canada-grid-index-lambert.png

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