Showing posts with label Rapa Nui. Show all posts
Showing posts with label Rapa Nui. Show all posts

Tuesday, August 14, 2007

Thoughts - Easter Island; Almost Done

Easter Island - EEVS Map (1-100,000)

Easter Island - EEVS Map (1-100,000)

As the title so aptly states, "Almost Done." I still have a few more features on the island to digitize and then I need to add the "fancy" stuff using ImageForge, like titles, lat/lon, north arrow, credits, legend and feature names. Stay tuned. This should be finished within the next few days.

Enjoy!

Monday, August 13, 2007

Thoughts - Easter Island Road Layer

Easter Island - EEVS Map Roads (1-100,000)

Easter Island - EEVS Map Roads (1:100,000)


Easter Island - EEVS Map Detail Hanga Roa Village Roads (1-6250)

Easter Island - EEVS Map Detail Hanga Roa Village Roads (1:6,250)

It is 8:30 AM and I have finished the Easter Island road layer. The village, Hanga Roa, has the majority of the roads found on the island. The image resolution I am using does not show hi-res details outside of Hanga Roa. I will compare my digitized road network with the road network found on the DigitalGlobe image in Google Earth.

Let's call this road layer my preliminary effort. I have some verification work remaining and road segment determination to complete before I finalize this layer.


Easter Island - EEVS Map Vegetation and Roads (1-100,000)

Easter Island - EEVS Map Vegetation and Roads (1:100,000)

This is the extent of my Easter Island mapping project; shoreline with off-lying rocks, vegetation (trees) and roads. I have invested about 14-hours of labor to create the current view of Easter Island. My next layer will be another vegetation layer. It will include all other low-lying vegetation.

Enjoy!

Thoughts - Easter Island Vegetation Layer

Easter Island - EEVS Map with Vegetation (1-100,000)

Easter Island - EEVS Map Vegetation (1:100,000)


Easter Island - EEVS Map Detail Hanga Roa Village Vegetation (1-6250)

Easter Island - EEVS Map; Detail Hanga Roa Village with Vegetation (1-6250)

I am continuing work on Easter Island. Just having finished a vegetation layer that shows distribution of trees, I decided it was time to post a progress report with a couple of observations.

First, about the trees. In the movies Rapa Nui the inhabitants destroyed the forest to transport their mega-moais. What I have learned from this current mapping exercise is that trees are growing on Easter Island. There are a number of large tracts of trees and many individual trees are scattered about the village of Hanga Roa.

Second, What about the detail? The second map is a zoom of the southern portion of the village of Hanga Roa. The scale is 1:6,250. This is possible because I am using a DigitalGlobe image found in Google Earth as my base image. I was able to map shoreline details (offshore rocks above water and awash) that have, most likely, never been mapped before, primarily, because of the availability of hi-res imagery. The final map will distinguish between rocks awash and rocks above water. For now they are part of the Land-Island layer.

My next layer will be the roads, paths and airfield. I'll post it when I've finished the next layer. So far, this is one of my most complex mapping projects consisting of lots and lots of vectors to show two layers of information.

Enjoy!