Tech GIS

Data types in GIS

2020-04-30T01:14:00.002+05:30

What are the difference types of Data used in GIS?

There are mainly two types of Data, Spatial data(which is Non-tabular) and Non-spatial Data(Which is Tabular).

*Spatial Data:

Spatial data is simply related to the geographic information about the earth and its features. A pair of latitude and longitude coordinates defines a specific location on earth's surface. Spatial data are mainly two types according to the storing technique,raster data and vector data.
Raster data are consist of grid cells which is identified by row and column. The whole geographic area is divided into groups of individual cells, which represent an image. Satellite images, photographs, scanned maps or images, etc.are examples of a raster type data.
Vector data are consist of mainly points, polylines, and polygons.Trees , houses, etc.are represented by points. Roads, rivers, streamline, etc.are represented by polylines. Village boundary and towns are represented by polygons.

*Non-Spatial Data:

Non-Spatial data is simply related to the attributes of the spatial objects.Attribute data comprise the relative information about the spatial data. For example, if a house is collected as a spatial data then the owner's name is considered as Non-Spatial data or attribute data of the house.Attribute data can be in various forms:
1 )Nominal data;
2)Ordinal data;
3)Interval data;
4)Ratio data

Govt jobs in GIS & Remote Sensing in India and possible eligibility criteria

2020-04-29T03:07:00.002+05:30

Govt. Jobs in GIS & Remote Sensing:

Most of the students and professionals asked multiple times that "How can I get Govt job in GIS?"

So, I can give you a sharp idea in case you're in India and serching for the govt jobs in GIS & Remote Sensing Field.

The job posts are sorted in the following categories:

1.Surveyors/Field Technician(Entry level):

It's a most hired entry level job position in government sectors, where you have to work on the data acquisition.

*Eligibility Criteria:

Minimum Educational qualification will be Diploma in surveying/Civil Engineering or B.tech in Civil Engineering/Geoinformatics or diploma in GIS & Remote Sensing.

Experience: 0-5 years maximum and it's a excellent opportunity for the freshers.

2.GIS/CAD Technician(Entry-Level):

It's a entry level position in GIS Field.It's a max paid job role in some Govt Sectors like Forest Department, Municipal Councils, Defense, agricultural board etc. under a state or central government.

*Eligibility Criteria:

Minimum Educational qualification will be B.tech/M.tech in computer science or Geoinformatics/Civil engineering or Diploma in GIS and Remote Sensing or B.sc/M.sc in Geography or any other related field (Qualification may varies according the job description) and age will be 18 to 45 yrs

Job Experience:1-5 years approx but sometimes it allows the freshers also so it's a good opportunity for the freshers. Experience matters if it signifies the particular position (junior or senior).

3.GIS Developer/GIS Analyst:

Some Govt Departments like Forest, Information Technology, Electricity, Agriculture etc offers on this job profile. It's a fastest growing profile in near future.

*Eligibility Criteria:

Minimum Educational qualification will be B.tech/M.tech in computer science or Geoinformatics/Information Technology or PG Diploma in GIS and Remote Sensing or B.sc/M.sc in Computer Application or any other related field (Qualification may varies according the job description) and age will be 18 to 45 yrs

Job Experience:1-10 years approx but it also varies, here you need a complete knowledge about computer science,IT and WebGIS platform.

Based on experience level it will be in Jr. Or Sr. Position.

4.Junior Research Fellow/Professor/Lecturer(Academic):

In this profile you can access your career in academics. Some Govt schools, colleges and universities like IIRS,IIT etc. offers for research, associate professor or full-time/contract basis lecturer post.Here you need a higher academic qualification in this field to get the job.

*Eligibility Criteria:

Minimum Educational qualification will be B.tech/M.tech in Geoinformatics and PG Diploma in GIS and Remote Sensing or B.sc/M.sc in GIS,/Agriculture/ Geology/Hydrology or any other related field (Qualification may varies according the job description) sometimes they want only PH.D candidates and age will be 18 to 45 yrs tentatively

Job Experience:5-10 years approx but it also varies,here you need mainly experience in academics.

So,these are the most common govt job profile but always some exceptional exists so you have to follow the above mentioned government pages and the job searching websites to get recent updates. I can't prefer any particular job searching websites but if you want then you can contact us. I think it will help you to build your career.

Raster Resolution

2020-04-28T03:08:00.000+05:30

So, basically we are going to discuss about the resolution of the Raster data in GIS. Raster data represents the real world in grid or cell format. So the detailing depends on the cell size(the area covered in the ground by a single cell) . i.e if a entity is represented in the minimum cell size of 1m×1m (which is first one in the image),2m×2m(second one) & 4m×4m(last one).

Raster resolution

So, the best resolution came from the first one then second one and then the last one.

We can say that the samaller cell size for higher resolution and larger cell size higher resolution. If we talk about accuracy then it also depends on the cell size.So we have to choose the raster as small as possible to get the higher accuracy in GIS.

What is GIS?

2020-04-27T22:11:00.000+05:30

What is GIS?
GIS stands for Geographical Information System (also known as Geoinformatics), which simplifies that it's a integration of Geography and Information Technology.It simply captures or collects the geographic data and analizes that data in different aspects of the Information Science.GIS integrates different types of data.

Conclusion:

So GIS is simply a integrated system to store,capture,analyze and manipulate the geographic data of the features on the earth surface and produce a map or statistical analysis in different format. GIS is now the most useful tool for the professionals of various domains.