7/25/2019 Prac 7 answer sheet ENV2REM

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ENV2REM Pra ctica l 7 – Answer Sheet

1. Which band ratio removes the topographic shading the best without removing too

much information from the image?

2. Is the !" image better than the individua band ratios?

$. What do the foowing features represent on a %asseed &ap '&& image?

• dar( bue

•  pae bue

•  bright red

). Note how the courses of the smaer cree(s are of a different coour to the rivers.

Wh* is this?

+.What percentage ,appro-imate* of the sum of the eigenvaues for a /

components is represented b* the sum of the eigenvaues for the first $

components?

/. 0re these sma dots evident on the natura coour image? What are the*?

7/25/2019 Prac 7 answer sheet ENV2REM

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. What does NDI measure?

3. 4n the NDI image5 what is indicated b* the6

• dar(est red coour?

• dar(est bue coour?

7. What parts of the area have the greenest8densest vegetation?

12. Where is most irrigation occurring?

1$. What is the moderate* arge sub9circuar area centred at $/: /; 1<5 1)/: 2; 1=<?

1). What is the sma sub9circuar area centred at $/: =; 2<5 1)/: 1$;+/<?