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LISA and TIMLISA and TIM
Keith T. Weber, GISPIdaho State University
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TIMTIM
• The Idaho Map (TIM)– Idaho Spatial Data Infrastructure
(ISDI)
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LISALISA
• Landsat Image Service Archive– A new project at the GIS Center– Funded by AmericaView– For more information, visit:
• http://americaview.org/• http://idahoview.org/
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What is Landsat?What is Landsat?• A multispectral imaging satellite
– Its takes “pictures” of the earth– The “pictures” (scenes) are taken
every 16 days– Each scene contains 7 “bands”, based
on color
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Bands and ColorBands and Color
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Landsat 5Landsat 5• Has been in
operation for nearly 30 years (expected duty cycle was 5-7 years)– Launched in 1984– Since that time,
quite an archive has been established
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What’s an Image Service?
What’s an Image Service?
• First, what is an image?– A digital picture– In GIS, its a raster layer
• An image service then…– Is a raster layer that is shared via the
web
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So it’s a download?So it’s a download?
• Nope…– Web services are streamed to your
computer – You do not download the source file– It’s similar to
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Our Landsat ArchiveOur Landsat Archive
• We have acquired numerous scenes dating back to 1984
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LISA project focusLISA project focus
• The Big Desert of SE Idaho• Path 39, Row 30• GIS Center currently has 63 scenes
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Imag
e S
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rep
Imag
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ice P
rep
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Lau
nch
ing
th
e S
erv
ice
Lau
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ice
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Why?Why?
• Provide the research community with data and value-added products to support scientific inquiry
• The Big Desert is an important area ecologically
• The GIS Center has over 12 years of research focused on the Big Desert
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Questions?Questions?