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Feature Request - Support for Lambert Conformal Conic Projection maps #19

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scolebrook opened this issue Oct 12, 2018 · 7 comments
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enhancement New feature or request

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@scolebrook
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Air Services Australia produce many maps in LCC projection. It would be great if avitab could support that in addition to Mercator. Thanks for such an incredibly useful plugin.

@fpw
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fpw commented Oct 12, 2018

The problem with the Lambert projection is that selecting two points is not enough to calibrate an image - the user will also have to enter the so-called standard parallels and they vary from country to country. I'm not sure if this is widespread knowledge among pilots - would you know the standard parallels for your charts?

@scolebrook
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For Australia at least, the standard parallels used are printed on the chart. They vary from chart to chart.

@fpw fpw added the enhancement New feature or request label Oct 12, 2018
@fpw
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fpw commented Oct 12, 2018

Are they published online as PDF or did you scan them yourself? If PDF, maybe they are geo-referenced and I could just add that format. Do you have an example map?

@scolebrook
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This is a Terminal Area Chart.
https://www.airservicesaustralia.com/aip/current/aipchart/tac/tac1_24MAY2018.pdf

This is a high enroute chart.
https://www.airservicesaustralia.com/aip/current/aipchart/erch/erch2_24MAY2018.pdf

This url will allow you to download other kinds of charts, some of which use Mercator.
https://www.airservicesaustralia.com/aip/aip.asp?pg=60&vdate=24MAY2018&ver=1

@oobayly
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oobayly commented Nov 10, 2021

I know this is very old, but I've managed to generate slippy (EPSG 3857) from maps like this using QGIS. If anyone is still interested I can put together some instructions on how I did it.

@dave6502
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I know this is very old, but I've managed to generate slippy (EPSG 3857) from maps like this using QGIS. If anyone is still interested I can put together some instructions on how I did it.

That's cool.
I know this is very old, but would it be possible to put together some instructions on how you did it?

@oobayly
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oobayly commented Aug 14, 2024

@dave6502 Sorry - only saw this today. Let me have a look at putting something together.

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