Geographic Information Systems/GIS

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Geographic Information Systems/GIS Interview Questions and Answers

Updated 16 Jul 2021

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Q1. You have 2 candles, each having burning time of 1 hour. How will you calculate time using these candles if you have to call someone when 45 minutes is over?

Ans.

To call someone after 45 minutes using 2 candles with 1 hour burning time each.

  • Light both candles at the same time

  • After 30 minutes, one candle will have burned halfway

  • When the first candle burns out, 30 minutes have passed

  • When the second candle burns out, 60 minutes have passed

Q2. How depth is your knowledge in GIS, PHOTOGRAMMETRY, PYTHON

Ans.

I have a strong understanding of GIS and photogrammetry, and I am proficient in Python.

  • I have experience working with ArcGIS and QGIS software.

  • I am familiar with remote sensing techniques and image analysis.

  • I have developed Python scripts for automating GIS tasks and data analysis.

  • I have worked on projects involving spatial data visualization and mapping.

  • I am constantly learning and staying up-to-date with new GIS technologies and techniques.

Q3. What is vector and raster data

Ans.

Vector data uses points, lines, and polygons to represent features, while raster data uses a grid of cells to represent data.

  • Vector data is used for representing discrete features such as roads, buildings, and rivers.

  • Raster data is used for representing continuous data such as elevation, temperature, and precipitation.

  • Vector data is more precise and accurate, while raster data is more efficient for large areas.

  • Examples of vector file formats include Shapefile, GeoJSON, and KM...read more

Q4. Types of gis and use of gis

Ans.

GIS can be categorized into desktop, web-based, mobile, and cloud-based. It is used for mapping, spatial analysis, and decision-making.

  • Desktop GIS: used for complex analysis and data management

  • Web-based GIS: used for sharing and accessing data online

  • Mobile GIS: used for data collection and fieldwork

  • Cloud-based GIS: used for scalable and collaborative projects

  • GIS is used in various industries such as urban planning, environmental management, and emergency response

  • Examples: Arc...read more

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Q5. What is TIN?

Ans.

TIN stands for Triangulated Irregular Network. It is a digital surface model that represents terrain as a set of contiguous, non-overlapping triangles.

  • TIN is a type of GIS data structure used to represent terrain surfaces.

  • It is created by connecting a set of irregularly spaced points with a series of triangles.

  • TIN is useful for analyzing terrain and creating 3D visualizations.

  • It can be used in various applications such as hydrology, geology, and urban planning.

  • Examples of sof...read more

Q6. 1. Can you name few Python library

Ans.

Python libraries for GIS include GeoPandas, Shapely, Fiona, PyProj, and Rasterio.

  • GeoPandas: for working with geospatial data in Python

  • Shapely: for manipulating and analyzing geometric objects

  • Fiona: for reading and writing geospatial data formats

  • PyProj: for converting between geographic and projected coordinates

  • Rasterio: for working with raster data

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Q7. What is GIS?

Ans.

GIS is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data.

  • GIS stands for Geographic Information System

  • It is used to analyze and manage spatial data

  • GIS can be used in various fields such as urban planning, environmental management, and emergency response

  • Examples of GIS software include ArcGIS, QGIS, and Google Earth

  • GIS data can be represented in various forms such as maps, charts, and graphs

Q8. What is mean by gis

Ans.

GIS stands for Geographic Information System, which is a computer system for capturing, storing, analyzing, and displaying data related to positions on Earth's surface.

  • GIS is used to create maps and visualize spatial data

  • It can be used in various fields such as urban planning, environmental management, and emergency response

  • GIS combines layers of information to give a better understanding of a location, such as population density, land use, and natural resources

  • Examples of GI...read more

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