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#1
tjonas

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I use Manifold 8 with no extras. The only thing I use it for is to make B&W or color shaded-relief terrain images to use as the basis for maps that I create in Adobe Illustrator. Most of the images I make would look best with the bold hill shading you see in the image on the left side of my attachment but I have not been able to figure out how to do that in Manifold. My map on the right was made in Manifold using a GeoTIFF at 1-minute resolution from the NOAA website. I've tried several types of data with the same results.

 

Although I've been using Manifold for a while now I'm still a novice. How in the world can I get my hill shading to look like the left image?

 

Thanks in advance.

-Tom in Phoenix

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#2
David Medeiros

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The map on the left is using a large amount of vertical exaggeration where the real elevations are multiplied 2, 3, 8 times. What ever is needed to make the real elevation stand out more.

 

They over did it in my opinion and may actually have an incorrect sample distance set, which creates an over exaggerated elevation effect.

 

Vertical exaggeration is used most in small scale maps where the real elevations end up looking flat due to the increased apparent distance form the map readers perspective. Increasing the elevations make them look more natural (usually).

 

Manifold must have some control for this. If there is no direct control for vertical exaggeration in rendering the shaded relief you could get the same effect by multiplying the cell values for the input DEM.


GIS Reference and Instruction Specialist, Stanford Geospatial Center.

 

www.mapbliss.com

 


#3
rudy

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Check out the previous discussion on Manifold and hillshading in Cartotalk from a few years back.



#4
tjonas

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David:

I think you have stated exactly what I need - exaggerated elevations. I have looked for a way to do that in Manifold 8 but have found nothing (I have no extensions). I am a novice, so if there is a way to do this in Manifold, I will need fairly specific instructions. Any suggestions?



#5
Charles Syrett

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I've used Manifold to create "surfaces", but I always export these and build relief renderings in other software, so I can't give you any help on that. However, any time I do need help in Manifold, I use the Manifold Forum . I've never had to wait more than a few hours before receiving a reply - there are lots of passionate Manifold users who are quite active on that Forum. You're far more likely to get answers to a specialized question there, than here on CartoTalk.


Charles Syrett
Map Graphics
http://www.mapgraphics.com



#6
tonyw

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I use Manifold 8 with no extras. The only thing I use it for is to make B&W or color shaded-relief terrain images to use as the basis for maps that I create in Adobe Illustrator. Most of the images I make would look best with the bold hill shading you see in the image on the left side of my attachment but I have not been able to figure out how to do that in Manifold. My map on the right was made in Manifold using a GeoTIFF at 1-minute resolution from the NOAA website. I've tried several types of data with the same results.

 

Although I've been using Manifold for a while now I'm still a novice. How in the world can I get my hill shading to look like the left image?

 

Thanks in advance.

-Tom in Phoenix

Hi Tom

   Do you do any thing in Manifold to the GeoTIFF image? Or do you use it as is as a layer in your final product? I use Manifold and there are tools for setting sun angle and direction to simulate shading, but these effects require the Surfaces extension which I understand you don't have.

 

  As suggested, the Manifold forum is a good place to ask questions.  I lurk there myself on the Manifold Forum but have stopped posting there to protest the heavy handedness of the forum administrators. 

 

-Tony



#7
Lui

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Another option is going with completely different software like QGIS 2.0 and Sextante plugin which use SAGA GIS modules. Or just go with SAGA GIS.






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