Open scolebrook opened 5 years ago
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?
For Australia at least, the standard parallels used are printed on the chart. They vary from chart to chart.
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?
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
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.
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?
@dave6502 Sorry - only saw this today. Let me have a look at putting something together.
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.