LISA and TIMLISA and TIM

Keith T. Weber, GISPIdaho State University

TIMTIM

• The Idaho Map (TIM)– Idaho Spatial Data Infrastructure

(ISDI)

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/

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

Bands and ColorBands and Color

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

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

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

Our Landsat ArchiveOur Landsat Archive

• We have acquired numerous scenes dating back to 1984

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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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

Questions?Questions?