☰
Use Of Computer In Data Processing And Mapping
What is the difference between spatial and non-spatial data ? Explain with example.
Spatial data : The spatial data represent a geographical space. They are characterised by the points, lines and the polygons. The point data represents positional characterstics of the some of the geographical features such as schools, hospitals, wells, villages, towns, etc. on the map.
Non-spatial data: The data describing the spatial data is called as non-spatial or attribute data. For example, if you have a map showing positional location of your school you can attach the information as the name of the school, number of students in each the class, available facilities like library labs, etc. In other words, you will be defining the attributes of the spatial data. Thus non-spatial data are also known as attribute data.
Sponsor Area
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’.
Sponsor Area
Sponsor Area