Hi,

what is the reason that the charts, at least from Germany, are so inaccurate? Two examples:
Ammersee: Why is the bird area as well as the control zone shifted by one or two kilometers to West?



Peissenberg:
In the chart, the Ammer rivers flows through the village Peissenberg. This is definitely wrong! It flows about four kilometers east of Peissenberg.



What is the reason for these inaccurate charts? Is there an improvement to expect. it concerns all available chart styles.
This poor chart quality is not really a help for VFR flights. Is the any improvement to expect?

Gerhard

I have asked the providers of our background scenery data (roads, railways, lakes and rivers) if they can make it more accurate in this area. We do not create this mapping data ourselves (unlike all the aeronautical data) so there are times like this where the limits on its precision show themselves quite starkly when compared to our aeronautical data, which is precise.

But boarders of Control Zones are aeronautical datas, are't they? See the Upper picture.

It could be that the surface of the earth has been shifted 2 km to the west which would accurate aeronautical data make appear as if it had been shifted 2 km to the east. Just a thought.

Eric

I am, indeed, surprised that an inaccuracy of surface features of the order of 2 km is deemed acceptable for an otherwise great piece of software. If SD is actually paying someone to provide these data, I would seriously consider switching the provider.

And this in days where accurate terrain and cultural data is available FOR FREE just to download. I am, of course, talking about Open Street Map. The data comes vectorized in databank format. If that doesn't suit you, there are a zillion utility programs out there to modify and massage the data until you like it. What gives???

-- Chris.