spatial and Visual data, it shows you what its doing, and working with people like experts can help to process the visual data GIS gives you

Where does GIS contribute?

Surveying, geography, cartography, history, statistics, remote sensing etc...

If there is a binary notation of 00110001 what is this number?

the data of the bits go 1,2,4,8,16,32,64,128. This means that for this data it is 4 + 8 + 128 which equals 140

How many numbers are there for 255#s?

There are 256 bc it includes zero as well.

If you have 256 how many bits do you need?

this goes back to the binary notation and all 8 added up together is 255, so you would need 9 bits to tell you this data.

For a thematic map how can we store data?

points, lines, polygons, raster and attributes.

If you are given two points in UTM and asked the distance and direction what would you do?

N1 - N2 = DN, if its increasing then you are going North, if decreasing then South. E1 - E2 = DE, if its increasing then you are going East, if decreasing then West.

Calculate distance between two points in UTM that to get to it is 20 Northing and 100 Easting.

20^2 + 100^2 = square root of distance. so you then add the squared numbers together to get 10,400 and find the square root fo that which is 102.

What is the max error for a 20 by 20 pixel?

The point is in the middle it takes 10 to straight out to the side, but to the corner would be most error, so you must square this 10, 10^2 and measure distance up to the corner from straight out so another 10^2 and add them = 100 then square root = 14.14

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GIS Exam !

Question	Answer
Define GIS	spatial and Visual data, it shows you what its doing, and working with people like experts can help to process the visual data GIS gives you
Where does GIS contribute?	Surveying, geography, cartography, history, statistics, remote sensing etc...
If there is a binary notation of 00110001 what is this number?	the data of the bits go 1,2,4,8,16,32,64,128. This means that for this data it is 4 + 8 + 128 which equals 140
How many numbers are there for 255#s?	There are 256 bc it includes zero as well.
If you have 256 how many bits do you need?	this goes back to the binary notation and all 8 added up together is 255, so you would need 9 bits to tell you this data.
For a thematic map how can we store data?	points, lines, polygons, raster and attributes.
If you are given two points in UTM and asked the distance and direction what would you do?	N1 - N2 = DN, if its increasing then you are going North, if decreasing then South. E1 - E2 = DE, if its increasing then you are going East, if decreasing then West.
Calculate distance between two points in UTM that to get to it is 20 Northing and 100 Easting.	20^2 + 100^2 = square root of distance. so you then add the squared numbers together to get 10,400 and find the square root fo that which is 102.
What is the max error for a 20 by 20 pixel?	The point is in the middle it takes 10 to straight out to the side, but to the corner would be most error, so you must square this 10, 10^2 and measure distance up to the corner from straight out so another 10^2 and add them = 100 then square root = 14.14
In GIS setting maps are used for what?	Analyzing and storing data.
What is the simplest data format?	Record structure

Created by: JackPitt

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