http://aims.jocogov.org desktop gis viewer race new breed of lightweight easy-to-use viewers for gis...

http://aims.jocogov.org

Desktop GIS Viewer Race

• New breed of lightweight easy-to-use viewers for GIS capabilities – somewhere between Desktop GIS and Internet Map Servers

• Build a functionality rich interface for browsing/consuming GIS data sources


Players

• Google– Google Earth 4.0 – http://earth.google.com

• ESRI– ArcGIS Explorer – not available yet

• Microsoft– Virtual Earth??? – nothing yet


Advantages

Google

• Exists

• Efficient

• KML

• 3D Viewer

• Data open source

ESRI

• Open source

• OGC WMS, ArcWeb Services, Local Data, KML

• 3D Viewer

• GIS Analysis


Disadvantages

Google

• Not integrated w/ ESRI products/data

• Interface not open source

• Data editing/use limited

ESRI

• Vaporware

• Efficiency???

• Native data format not open source


KML• Keyhole Markup Language

http://earth.google.com/kml/index.html

• Programming interface to manipulating GE maps

• XML based format for storing geography

• Open Source for the map configuration and data

• Is not open source for the application interface


<?xml version="1.0" encoding="UTF-8"?><kml xmlns="http://earth.google.com/kml/2.0"><Placemark>

<name>DP31000001 0002</name><description>

<![CDATA[Address: 450 E PARK ST<BR>Landuse: Elementary School<BR><img src="http://ims.jocogov.org/docs/appr/pics/MVPictures\20040113/A7093726.jpg"

width="175" height="127"></description><visibility>1</visibility><LookAt>

<longitude>-94.8131132906944</longitude><latitude>38.8827947853329</latitude><range>3000</range><tilt>35</tilt><heading>-359</heading>

</LookAt><Style>

<IconStyle><Icon><href>root://icons/palette-3.png</href> <x>160</x> <y>160</y> <w>32</w> <h>32</h>

</Icon></IconStyle></Style><Point>

<coordinates>-94.8131132906944, 38.8827947853329, 0</coordinates></Point>

</Placemark></kml>


• Integration Example


KML Polygon <Placemark> <name>Widget World</name>

<description>Widget World Headquarters</description> <styleUrl>#FEATURES</styleUrl> <Polygon> <extrude>1</extrude> <altitudeMode>relativeToGround</altitudeMode> <outerBoundaryIs> <LinearRing> <coordinates>

-94.90665600907092, 38.8148205322514, 19.8120002448559 -94.906828409309, 38.81498121535441, 19.8120002448559 -94.9068602278212, 38.814957889769, 19.8120002448559 -94.90732755817392, 38.8150845270803, 19.8120002448559 -94.90752537288709, 38.81463293618451, 19.8120002448559 -94.90757466359631, 38.8146382564395, 19.8120002448559 -94.9077048955315, 38.8143453615227, 19.8120002448559 -94.90733560928092, 38.814234033402, 19.8120002448559 -94.90732162264492, 38.8142562340813, 19.8120002448559 -94.90719020825659, 38.8142307401537, 19.8120002448559 -94.90718297414389, 38.814271918331, 19.8120002448559 -94.9071090566616, 38.8142639642749, 19.8120002448559 -94.90721086256203, 38.8141662609869, 19.8120002448559 -94.907277171825, 38.8141026203355, 19.8120002448559 –

</coordinates> </LinearRing> </outerBoundaryIs> </Polygon> </Placemark>


ArcGIS Tools

• Export to KMLhttp://arcscripts.esri.com/details.asp?dbid=14273

• Home Companionhttp://bbs.keyhole.com/ubb/showthreaded.php/Cat/0/Number/

345310

• KMLerhttp://www.kmler.com

http://aims.jocogov.org desktop gis viewer race new breed of lightweight easy-to-use viewers for gis...

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