The above map shows some of my completed island mapping projects. Each icon contains the name of the primary island associated with the project and a link to the post. Once all of my projects are posted, the map will be covered with icons. To productively use the map, zoom into a region of interest. Then select an icon.

Each of my maps is constructed of numerous layers of information. All of the layers are vector files. I will make these files available upon request. You are free to use them with certain restrictions - 1) Don't sell them. You can use them on research projects, post them to your website or things of that nature. If you aren't sure about the use of my maps, drop me a line and we can discuss your idea. 2) Give me credit when you use my vectors or images of my maps. Credit them to Peter Minton @ EVS-Islands

If I have the island vector file(s) and based upon your need, I will make them available. Images of my maps are yours to download and use, with the above restrictions applicable. Enjoy!

Saturday, December 09, 2006

How To Google Google Images The Right Way, According To Google

Socorro Island - Google Earth/Digital Globe (GE/DG) Southern Detail (1-25,000)

Socorro Island - Google Earth Southern Detail (1-25,000)

This is Google'ing a Google image the right way. You can use an image, for non-commercial purposes, as long as you include the trademarks found on the image.

Socorro Island - GE Image and Marplot Ocean Layer with Grid

Socorro Island - GE/DG Image and Marplot Ocean Layer with Grid (1:100,000)

This looks like I am Google'ing a Google image the right way, but it probably isn't. I have modified GE/DG's image by superimposing my EVS Ocean Mask layer and adding the image trademarks manually. Although my purpose is non-commercial, I am messing with the base image. Again, I believe this is probably not a proper Google'ing of a Google image, even though I superimposed the requisite trademarks.

Piuli Island PP - Landsat and GE Image (7,812)

Piuli Island PP - Landsat and GE Images (1:7,812)

Piuli Island PP - Marplot Map (7,812)

Piuli Island PP - Marplot Map (1:7,812)

Even though the GE/DG image is stretched and twisted, the trademarks are included making this image a good Google. However, the map is probably not a good Google. The shoreline along with reef and vegetation layers were created from the GE/DG image. Consequently, the map is derived from the GE/DG image and should be credited. I should include text that credits my map sources and then I think my non-commercial product will be properly Googled.

1 - Buyukada - Image (Landsat ETM+ 2000)

Buyukada - Landsat Image ETM+ 2000

2 - Buyukada - Image (1-Meter)

Buyukada - GE/DG Image with Digitized Path

EVS (Enhanced Vector Shorelines) are created from Landsat ETM+ 2000 imagery. The first image is a very tight zoom of the town of Buyukada on the island with the same name (located outside of Istanbul, Turkey). I could create decent vector shorelines from the Landsat image, however, GE/DG's image at 1 or 2-meter resolution is a major improvement over the Landsat imagery. To create a path, as I did on the GE/DG image, is good Google'ing. To take that path, translate the KML file into an ARC Ungenerate map file and load it into Marplot to create a map is probably not good Google'ing. That path, now a GEVS (Google Earth Vector Shoreline) shoreline, is not properly credited. I should add text that identifies the vector sources as a GE/DG image. That would be proper Google'ing

Not fully appreciating the ramifications of the conversation, I spoke with a Google service rep (I do not have his name) during this past summer (I do not know the specific date). He said, "Make sure you include the trademarks when you download and post the GE/DG images." I asked about the proper Google treatment for maps created from GE/DG images and he said, "Aaah? Aaah? What do you mean "map"?" I explained my process of creating maps from GE/DG images and that these non-commercial products were posted on my blog for the world to view and download. He said, "Sounds okay to me! Any other questions?" The exchange did not exactly instill confidence in me as to my proper Google'ing of GE/DG derived vector map files.

The first keyword you must remember when you Google the GE/DG images is "trademark". It has to be on the image. The second keyword is "non-commercial". If you are trying to make a buck off of their images, you are going to need their, both GE and DG's, approval and it will cost. If you are posting images, like me - life is swell and go for it.

If you are a Google person in the know and you need to correct, add info or give me "kudos" for a job well done, go for it.

P.S. - I have read the letter from Michael Jones, the Chief Map Dude of Google Earth. I believe everything that I have stated above is in line with both the content and spirit of his correspondence.

Enjoy!

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Wednesday, December 06, 2006

Thoughts - Jean-Pierre Langer and His Island Maps

Jean-Pierre and Colette Langer

Jean-Pierre and Colette Langer - The Original Island Mapper

makatea_map

Makatea Island Map - An Example of Jean-Pierre's Work

Jean-Pierre is an important inspiration for my island mapping.  I remember coming across his work on various websites.  All of his island products were consistent, attractive and reasonably accurate.  I love his simple, yet very effective maps.  He maintains his Geovoyages website that contains all of his island maps.

I believe he said that he worked off of nautical charts, satellite imagery and any other available resources.  His map work was done in Adobe Illustrator (I think - not sure).  His maps are of the little geo-pearls that are seldom mapped.  His contribution to the depiction of these islands in a cartographic style can be appreciated on a number of websites that use his island imagery.

My one and only email conversation with Jean-Pierre was brief.  He said that he liked my work and encouraged me to continue my efforts.  I asked if he was still making maps.  He said his artistic efforts were currently directed toward Flight Simulator cockpits.  Good for him, too bad for island mapping.

Thanks, Jean-Pierre, for your early efforts.  They continue to be appreciated by those seeking maps of islands.

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Tuesday, December 05, 2006

How To Create Contours Using SRTM and Global Mapper

Socorro Island - Landsat Image Cleaned

Socorro Island - Landsat Image Cleaned

Socorro Island - Marplot Map (1-100,000)

Socorro Island - Marplot Map (1-100,000)

Socorro Island - SRTM-30 with Contours (50-meter interval)

Socorro Island - SRTM-30 with Contours (50-meter interval)

Socorro Island - Google Earth Southern Detail (1-25,000)

Socorro Island - Google Earth Southern Detail (1-25,000)

Socorro Island - Marplot Map Southern Detail (1-25,000)

Socorro Island - Marplot Map Southern Detail (1-25,000)

I took my original Socorro Island project and decided to add 50-meter interval contours.  The process in Global Mapper is simple.  First you need to load the appropriate SRTM-30 file which I snag from a NASA site.  I get SRTM Version 2, which is the latest and greatest.  The two files that makeup Socorro Island are titled N18W112.hgt.zip and N18W111.hgt.zip.  GM allows these files to be loaded while zipped.

Once loaded I select "Generate contours..." from the File menu.  I selected the default of 50-meter intervals.  I enclose the area to create contours from and Enter.  The contours are created within seconds.

SRTM is a fairly rough cut, consequently the contour closest to the shoreline wabbles in and out of the shoreline.  The last step is to manually adjust this shoreline.  All of you mapping pros wince when I say that I adjust manually.  You appreciate that this adjustment is a W.A.G. (Wild Ass Guess) based on experience and practice.

What you see above is both the entire island with 50-meter contour intervals and a detail of the southern end of the island.  I used Google Earth imagery of Socorro Island to create the exellent shoreline.  I call it GEVS - Google Earth Vector Shoreline.

Like I have said, this creating of contours business is a snap with Global Mapper.  Try it, you'll like it.

Enjoy! 

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Sunday, December 03, 2006

Carteret Atoll PP and Sad Thoughts

Carteret Atoll PP

This is a disappearing island. It is not sinking, but sea level is rising and motus are disappearing. One estimate as to when this atoll will sink beneath the ocean surface is by 2015. As a result, the islanders are being relocated to dry land.

The Wikipedia article about Carteret Atoll is excellent in it's scope and detail. By 2007, according to the article, all inhabitants will be relocated. Due to rising seas, the island's fresh water supply is being heavily tainted with saltwater. Another article called "Carteret Islands Evacuation" includes a number of photos and an interview with inahabitants. And finally, The Guardian Unlimited, in an article entitled "Pacific Atlantis" discussed the plight of people living on low-lying islands in this age of melting ice and rising seas.

I love islands! They have an almost magical pull on my very being. This post makes me sad. I will not wade into a discussion of the reasons for this disaster. But a world without low-lying islands, without palm trees leaning from the shore to the water's edge, without beachs to explore, without the sounds of village life, without the sounds of a healthy shoreline is lessened. I don't know that they can be saved, at this point. For my part, I will continue to map them thus giving them a permanent place in our "Blue Marble" psyche.

This is not an "Enjoy!" post.

PS - To see additional information on the Carterets visit my latest post, Thoughts - The Quaking Carterets

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