Best 'clarity' maps..1:250k??

Submitted: Friday, May 08, 2009 at 14:21
ThreadID: 68638 Views:1738 Replies:5 FollowUps:6
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When installing 1:250k maps- is it best to use the Australia Mosaic map or the individual map sheets- What is the best setup/ pixel option for zooming ??

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Reply By: Willem - Friday, May 08, 2009 at 14:35

Friday, May 08, 2009 at 14:35
The problem with individual maps is that you always have to load the next map and then you have to know sometimes what the number of the next map is. A Pain.

Oziexplorer and Natmap have Zoom Functions so you can take your pick.


Cheers
AnswerID: 363853

Follow Up By: Member -Signman - Friday, May 08, 2009 at 14:41

Friday, May 08, 2009 at 14:41
My Ozi automatically moves onto the adjacent map sheet- no need to load it...
I have used both the mosaic and the separate sheets- but didn't take much notice then which option has the 'best' pixels..


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Follow Up By: Willem - Friday, May 08, 2009 at 15:19

Friday, May 08, 2009 at 15:19
I am a tad puzzled by the pixels. What are you trying to achieve if the Zoom options do not work?
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Follow Up By: Member -Signman - Friday, May 08, 2009 at 15:28

Friday, May 08, 2009 at 15:28
OK- in other words, what option had the better resolution ??
The ole eyes ain't as good as they used to be, so on some occasions I may have the zoom set at 80% to see a large area, but sometimes would like it at-say- 120% for closer inspection.
Also, coz of limited storage space it may be easier to load up 10 or 12 mapsheets instead of loading on the full Mosaic !!

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Follow Up By: Willem - Friday, May 08, 2009 at 15:56

Friday, May 08, 2009 at 15:56
I can relate to the 'eyes' thing as you have a few years on me, methinks :-)

Now I am puzzled by your storage space. I run Natmap Raster 2008 and Oziexplorer on a 4 Gig SD card in my PDA and it handles it fine. Also run the same on my little Acer One laptop
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Reply By: Mikee5 (Logan QLD) - Friday, May 08, 2009 at 15:33

Friday, May 08, 2009 at 15:33
I found a funny thing with Natmaps - when I used the Zone maps eg Zone 54, zone 55 with the range circles on the circles are round, when I use the mosaic, the zone circles are oval being longer east/west. This makes me think that the mosaic is somehow distorted, not a big deal, just curious.
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Follow Up By: JohnF56 - Friday, May 08, 2009 at 15:49

Friday, May 08, 2009 at 15:49
That's because the Earth is NOT exactly round - it is more like an egg.
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Follow Up By: The Explorer - Friday, May 08, 2009 at 16:12

Friday, May 08, 2009 at 16:12
It has to do with the projection used to represent the earth on a flat surface. The Mosaic obviously uses a different projection to the Zone maps. If a projection produces a different scale across the map compared to down the map you will get a distorted circle. Some discussion on it here..

Natmap projection

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Greg
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Reply By: GerryP - Friday, May 08, 2009 at 21:11

Friday, May 08, 2009 at 21:11
Hi Signman,

I find the Raster Premium is clearer than the plain Mosaic. It is a much larger file though.

Cheers
Gerry
AnswerID: 363939

Reply By: Richard Kovac - Friday, May 08, 2009 at 21:56

Friday, May 08, 2009 at 21:56
Hi Signman

as Willem says the Natmap Raster 2008 250k Mosaic map is a very good map. the colouring of the map makes it a lot clearer then the older maps.

Cheers

Richard

Me thinks
AnswerID: 363943

Reply By: Wahroonga Farm - Thursday, May 14, 2009 at 18:57

Thursday, May 14, 2009 at 18:57
If your using the latest 250k Natmap they're the same resolution.

It's more about how large each image is and if your device has enough memory.

The mosiac is alsways the better choice for planning as the whole of Aus is loaded and viewable.
AnswerID: 364888

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