I was just wondering if there was something I've missed to get additional visual items displayed on the SD charts (both on my PC for planning and on the iPad for Navigation).

The best example I have is the various white horses around me as whilst Avebury is noted as a VRP, the white horses aren't marked in SD but they are on the CAA charts (my 1:500,000 chart has them clearly).

As a secondary observation, the appearance of roads and rivers can be quite different - comparing the river betwen Avebury and Marlborough, the CAA map has a lot of detail (despite not being zoomable in any way) whereas the SD one is a lot of straight lines (very obvious when zoomed in).

The same is evident on the A361 between Avebury and Wroughton, there is a marked bend in the road, clearly visible on the CAA map but completely absent on the SD plot.

I understand that it needs to be sampled as straight lines, but it seems that not enough sampling points have been used to give a true indication of the river shape, though maybe this is to reduce the data footprint.

I guess as SD is being used with GPS, it is not as important to have totally accurate mapping - but as there is an option to print the route, I was a little suprised they are not that accurate...

Because we have decided that, in our product, highly detailed roads are not important. There are other products where that decision might not have been made, but it fits our needs well and is a good balance between detail and speed and memory consumption.

To say our charts are not accurate implies they are not accurate from an aeronautical standpoint, which would be wrong.

Hi,

I agree totally with the accomplished balance between detail, speed and memory, from my point of view, there is no need for futher detailed roads.

However, I've another concern regarding the accuracy of roads, for example. I think, it is important to recognize the shape or the course of a road as a visual reference if the GPS functionality is unserviceable. Comparing the shape of the same piece of highway in Switzerland in SD and google maps or the Swiss ICAO Map, the difference of the shape, especially within the red rectangle, is quite obvious:



This is an example where I say that I would need to recognize the curved course of the highway (right image) which is not straight on like in SD's part of the map (left image).

This is not an issue about the level of details but about accuracy within the same level of details.

If there would be an option to improve the accuracy regarding shapes and courses of roads, rails etc., I would appreciate it very much.