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Use Of Computer In Data Processing And Mapping
Write a short note on Ground Control Points (GCPs).
Ground Control Points (GCPs):
GCPs are features of known ground location that can be accurately located both in terms of their image coordinates (column and row numbers) on the distorted image and in terms of their ground coordinates (typically measured from map or estabilished on the ground in terms of latitude and longitude with respect to a particular projection system, say UTM or Polvconic). A leas-square regression analysis is done to interrelated the geometrically correct (map) coordinates and distorted image coordinates. Then, image is worked to have correct geometrical relationship with its corresponding ground situation.
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What is the three forms of geographical data?
Carry out the following steps using
the given data set:
(a) Enter the given data in a file and store in ‘My Documents' folder
(Name the file as rainfall)
(b) Calculate the standard deviation and mean for the given data set using Function Wizard in Excel spreadsheet
(c) Compute coefficient of variation using the results derived in step (6).
(d) Analyse the results.
Represent the data given below using a suitable technique with the help of a computer and analyse the graph.
Cropping Intensity in India
|
yr_80s |
Cl_80s |
yr_90s |
Cl_90s |
|
1980-81 |
123.3 |
1990-91 |
129.9 |
|
1981-82 |
124.5 |
1991-92 |
128.7 |
|
1962-83 |
123.2 |
1992-93 |
130.1 |
|
1983-84 |
125.7 |
1993-94 |
131.1 |
|
1984-85 |
125.2 |
1994-95 |
131.5 |
|
1985-86 |
126.7 |
1995-96 |
131.8 |
|
1986-87 |
126.4 |
1996-97 |
132.8 |
|
1987-88 |
127.3 |
1997-98 |
134.1 |
|
1988-89 |
128.5 |
1998-99 |
135.4 |
|
1989-90 |
128.1 |
1999-00 |
134.9 |
What is a computer?
What are the types of computer?
Name the hardware units of a computer.
What is software?
Name the operations which take place in digital techniques of mapping.
What are the storage devices in a computer?
Write short note on ‘Central Processing Unit’.
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