Heightmap Issues

[ThatRandomTypo]

So, I downloaded a free height map (the creator explicitly said they were free as long as you would credit them) and each time I load it the terrain ends up very spiky. I've notice this happens any time I ever try to use my own height map that I created myself, and Im not sure if its because my map size (the width and whatnot) is too small or too large. Any advice?

[D-ead7Dog]

Perhaps these threads can help you out. ;w;

here
here
here

[ThatRandomTypo]

Perhaps these threads can help you out. ;w;

here
here
here

As helpful as those are, they don't really seem to cover my issue, thanks though!

I'm thinking I'm going to have to run the images through a weak blur to sort of smooth out the scattered pixels, which I can only presume are causing my problem.

[Hakumi]

That's actually why ( if memory serves me when I first did the map ).
Just go ahead and blur out any rough edges, smoothing them out more and it'll be more 'rounded' & not spiky ^.^

[Kynvuu]

You can also try to mess around with the width, length, and height of the map. Sometimes certain height-maps are more suited for maps of certain sizes or heights.