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Nelson BC Map

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#1
burwelbo

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Just thought I would post a section of a poster map I have been working on for a friend of mine in Nelson. It is support backcountry skiing, boarding and biking. It was created using free online resources from Geogratis, Toporama and Saforah. I used ERMapper, ArcGIS and Spatial Analyst to do the bump mapping. I used Jeff Nighbert's methodology modified for my own needs. I would like to here how others are doing bump mapping. Its a type of mapping I have become interested because it uses remote sensig data.

Bruce

#2
burwelbo

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I guess I need to add the map.

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#3
Martin Gamache

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I think the key to bump mapping and most effects in cartography is subtlety.

#4
DaveB

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I think the key to bump mapping and most effects in cartography is subtlety.

<{POST_SNAPBACK}>


I agree with Martin.
Here is a bit of screenshot from an example I did in ArcMap using Jeff Nighbert's techniques.

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Dave Barnes
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#5
burwelbo

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So your saying I should just tone down the bumps? Or are they too big. I still want to differentiate between decidous and coniferous trees.Should I just make them more transparent? Any advice would be welcome.

Thanks
Bruce

#6
Martin Gamache

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Bruce,

The amount of bump mapping is really related to your map scale. For a very large scale map ( something like a site plan, or campus map) where the actual canopy characteristic would be appreciable then it is appropriate to have more bump mapping and to use this as a variable to distinguish conifer from deciduous trees for example. On the other hand a smaller scale trail map would benefit from less subtle symbology and to use a small amount of bump mapping to add texture. The scale I see in your map seems to be the latter and as such the bump mapping just looks noisy and does not communicate any information.

In Cartographic Perspectives # 52 Brandon Plewe ( who used to post here...maybe he just lurks now..) had a great example of a large scale (1:9000) map of Heber Valley Camp that used bump mapping to good effect. Maybe he'll post a link to his map.

With techniques like these, the urge to use them (in sometimes innapropriate situations) sometimes overwhelms us when it might be better to go with a lighter hand.

I would suggest using hue as your primary information variable to distinguish forest types and to use texture or bump mapping in combination with intensity to control for forest density. On your map it appears the bumps are too big and they dominate to much. Can you imagine being able to read any labels or trail/route linework (the main information your recreation map will carry) over that texture? I can't.

#7
Rob

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I used Jeff Nighbert's methodology


is there a link to this?

#8
DaveB

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I used Jeff Nighbert's methodology


is there a link to this?

<{POST_SNAPBACK}>



Here's one place I know to get Jeff's writeup on this - Jeff Nighbert's paper on bump-mapping
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