Now coding..

Finished first code for MPD. Gives extremely trashy results. Limit was kept from -x to +x. Some values I get are just insane! Something like 40 times x!! Have to work on MPD: pretty clueless what to do actually, theres nothing wrong with the code I've written. Will try and experiment with parameters and hope for better results.

Btw used 3Dem for the first time successfully on an ASCII matrix, and on an USGS DEM file. The latter was beautiful, the former hideous (it was generated from my program).

First link on Google for Perlin Noise. It is a pretty decent article. Seems to cover all the basics. Related to this is this article on Image interpolation.

Unfortunately, perlin noise gives very very...almost to the point of being unrealistic, rough terrain. Have to make MPD work. In desperation might try particle deposition too, although its very costly, and the quality of terrain would probably be questionable too.

A few links related to interpolation in 2D
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Short article summarizing a few interpolation algorithms
Bicubic interpolation@Wikipedia
Article on interpolation in USGS DEMs