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Ask the right questions to secure the right Arc talent among an increasingly shrinking pool of talent.
Arc is a programming language, developed by Paul Graham and Robert Morris in 2008. It's a dialect of Lisp, designed for exploratory programming and emphasizing simplicity over formal structure. The language was created as an experiment in how minimalist a practical language could be, focusing on expressive power rather than raw performance. Arc is open-source and its implementation is available under the Artistic License 2.0. Its development has been discussed extensively on the online forum Hacker News, which was originally written in Arc.
The next 20 minutes of the interview should attempt to focus more specifically on the development questions used, and the level of depth and skill the engineer possesses.
ArcGIS provides a variety of tools and capabilities for data conversion. This includes tools for converting data between different formats, such as shapefiles, geodatabases, and CSV files, as well as tools for converting data between different coordinate systems.
ArcMap is the main component used for map creation and geographic data analysis, while ArcCatalog is used for data management, including browsing, searching, and organizing data.
The key components of ArcGIS include ArcMap, ArcCatalog, ArcToolbox, ArcScene, and ArcGlobe. Each of these components serves a specific purpose and provides specific capabilities.
ArcGIS provides a rich set of tools and capabilities for visualizing data. This includes creating various types of maps, such as thematic maps, heat maps, and 3D maps. It also includes creating various types of charts and graphs, such as bar charts, pie charts, and scatter plots.
ArcGIS is a geographic information system (GIS) for working with maps and geographic information maintained by the Environmental Systems Research Institute (Esri). It is used for creating and using maps, compiling geographic data, analyzing mapped information, sharing and discovering geographic information, using maps and geographic information in a range of applications, and managing geographic information in a database.
Arc development projects often have tight deadlines. A candidate who can manage their time well will be more likely to meet these deadlines.
Arc developers need to communicate effectively with team members, stakeholders, and sometimes clients. Good communication skills are therefore essential.
These languages are commonly used in Arc development. Proficiency in these areas can indicate a strong candidate.
Arc development often involves collaboration. A candidate who can work well in a team will be more likely to contribute positively to projects.
Arc developers often encounter complex issues that require innovative solutions. Their ability to problem solve is critical.
This is crucial because ArcGIS is a key tool for Arc developers. They should be familiar with its features and capabilities.
The next 20 minutes of the interview should attempt to focus more specifically on the development questions used, and the level of depth and skill the engineer possesses.
ArcGIS provides a variety of tools and techniques for handling large datasets. This includes using geodatabases for efficient data storage and management, using map layers for efficient data visualization, and using geoprocessing tools for efficient data analysis.
Vector data represents geographic features as points, lines, and polygons, while raster data represents geographic features as grid cells. Vector data is used for representing discrete features, such as roads and buildings, while raster data is used for representing continuous features, such as elevation or temperature.
A geodatabase is a database that is used to store, query, and manipulate geographic information and spatial data. In ArcGIS, geodatabases are used to manage and organize data, to perform complex queries and analysis, and to create and edit geographic features.
ArcGIS provides a rich set of tools for spatial analysis. This includes tools for analyzing patterns, mapping clusters, measuring geographic distributions, and modeling spatial relationships. These tools can be used to answer geographic questions and to make predictions or decisions based on spatial data.
Geocoding is the process of converting addresses into geographic coordinates, which can then be used to create maps. In ArcGIS, geocoding is used to create point features from address data, to display the location of an address on a map, or to create routes and directions.
A skilled Arc engineer should demonstrate proficiency in ArcGIS software, ability to manage spatial data, and strong problem-solving skills. Red flags would include a lack of specific examples of past work, unclear communication, or unfamiliarity with standard industry tools and practices.
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The final few interview questions for a Arc candidate should typically focus on a combination of technical skills, personal goals, growth potential, team dynamics, and company culture.
Some advanced features of ArcGIS that I have used include the ModelBuilder for automating geoprocessing tasks, the Python scripting interface for customizing and extending ArcGIS, and the 3D Analyst extension for creating and analyzing 3D data.
ArcGIS provides a variety of tools and techniques for handling data quality issues. This includes tools for checking and validating data, tools for cleaning and correcting data, and tools for managing metadata to ensure data integrity and accuracy.
A shapefile is a simple, non-topological format for storing geometric location and attribute information of geographic features, while a feature class is a collection of geographic features with the same geometry type and the same attribute fields, stored in a geodatabase.
ArcGIS provides a set of tools for network analysis, which is used to analyze and model the behavior of networks, such as transportation networks or utility networks. This includes tools for finding the shortest path, finding the closest facility, or performing service area analysis.
A map projection is a mathematical formula used to represent the three-dimensional surface of the earth on a two-dimensional map. In ArcGIS, map projections are used to display geographic data in a way that is appropriate for the scale and purpose of the map.
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