데이터 시각화는 전 세계 기업이 패턴을 파악하고 성과를 예측하며 비즈니스 수익을 향상시킬 수 있도록 지원합니다. 시각화는 데이터 분석의 중요한 측면입니다. 간단히 말해, 데이터 시각화는 표 형식 또는 공간 데이터의 결과를 시각적 형식으로 전달합니다. 이미지는 이목을 끌고 아이디어를 명확하게 전달할 수있는 힘이 있습니다. 이는 의사 결정을 돕고 개선을위한 행동을 유도합니다.

 

올바른 도구를 사용하면 원시 데이터에서 확실한 시각적 스토리를 제작할 수 있습니다. 다음 데이터 시각화를 위한 무료 오픈 소스 도구들 입니다.

 

1. Candela

JavaScript를 알고 있다면이 오픈 소스 도구를 사용하여 풍부한 데이터 시각화를 만들 수 있습니다. Candela는 상호 운용 가능한 웹 시각화 구성 요소의 오픈 소스 모음입니다.

 

Candela

2. Charted

Charted는 무료 데이터 시각화 도구로서 CSV 파일과 Google 스프레드시트에서 선 그래프 또는 막대 차트를 만들 수 있습니다. 여기에는 LineUp 구성 요소, UpSet 구성 요소, OnSet 구성 요소, Vega 시각화 및 GeoJS 지형 공간 시각화를 포함한 통합 구성 요소가 포함됩니다. 도구는 데이터를 저장하거나 조작하지 않습니다. 순전히 시각화에 중점을 두 었으며 레이블 및 메모가 있는 선 또는 누적형 차트를 만드는 기본 기능이 있습니다.

Charted

3. Datawrapper

Datawrapper is a mobile-friendly data visualization tool that lets you create charts and reports in seconds. The free version of the tool, meant for a single user, supports 10,000 monthly chart views.  Using the tool, you can create different types of visualizations such as a bar chart, split chart, stacked chart, dot plot, arrow plot, area chart, scatter plot, symbol map, and choropleth map. You don’t need coding or designing skills to use the tool.

Datawrapper

4. Google Data Studio

Google’s data visualization tool is free and easy to set up if you have a Gmail account. You can connect it easily with Google products such as Google AdWords, Google Analytics, YouTube Analytics, and Google Sheets.

Google Data Studio

5. Google Charts

Another simple and free data visualization tool by Google is the Google Charts tool. The tool comes with interactive charts and data tools for visualization.

Google Charts

6. Leaflet

Leaflet is an open-source JavaScript library that allows you to make mobile-friendly interactive maps. The tool has a lot of plugins for adding features and works well on various desktop and mobile platforms.

Leaflet

7. MyHeatMap

MyHeatMap is a free tool to view your geographic data interactively. The free version of the tool offers only public maps and you can add only 20 data points for each of those free maps. The tool makes it easy to understand the data with color-coded heat maps. You can also switch between data sets within the same map.

MyHeatMap

8. Openheatmap

Openheatmap lets you turn your spreadsheet into a map. You can upload your CSV file or Google sheet to create an interactive online map in seconds. The tool can be used to explain data like customer demographics by zip codes.

Openheatmap

9. Palladio

Palladio is a free tool designed to visualize complex historical data. It comes with features like map view, graph view, list view, and gallery view. You can use the tool to visualize data in CSV, TAB, or TSV files. With the graph view, you can visualize the relationship between dimensions of your data. The data is displayed as nodes connected by lines. The list view, on the other hand, allows you to arrange data to make customized lists. The tool also has a gallery view to display data within a grid.

Palladio

10. RawGraphs

RawGraphs is an open-source platform that helps you visualize TSV, CSV, DSV, or JSON data. The free tool is simple to use and helps in converting data to charts.

RawGraphs

11. Tableau Public

Tableau Public is a free business intelligence tool that allows users to create and share interactive charts, graphs, maps, and apps. The free version of the tool comes with 10 GB of storage. You can connect it to data sources like Google Sheets, Microsoft Excel, text files, JSON files, spatial files, web data connectors, OData, and statistical files such as SAS (.sas7bdat), SPSS (.sav), and R (*.rdata, *.rda).

Tableau Public

12. Timeline

Timeline is a free tool that allows you to create timelines for reports. You can connect your Google Drive account to create a timeline from Google Spreadsheet using the templates given in the tool. Using JSON, you can create custom installations.

Timeline

13. Chartist.js

Chartist.js is a free data visualization that allows you to create responsive charts fast and easy.
The tool offers great flexibility and is customizable. You can even use CSS animations and transitions to your SVG elements.

Chartist.js

14. ColorBrewer

ColorBrewer is a free tool that can be used to make your maps better in terms of color schemes. The tool makes it easy to differentiate colors on a complex map.

ColorBrewer

15. D3.js

D3.js is a free JavaScript library that helps you create images using data. The tool enables you to connect arbitrary data to a document object model (DOM) and then apply data-driven transformations to the document. With DOM programming API, programmers can access documents as objects.

D3.JS

16. Plotly

Plotly is an open-source tool that allows you to compose, edit, and share interactive data visualizations. You can use the tool to create D3.js charts and maps by uploading CSV files or connecting to the SQL database. You can also create charts with R or Python.

Plotly

17. Polymaps

Polymaps is a free JavaScript library for creating dynamic, interactive maps in browsers. You can use the tool to get a display of multi-zoom datasets over maps. The tool uses scalable vector graphics (SVG) to display images, thus enabling you to define the design using CSS.

Polymaps

18. Weave

Weave is a free data visualization platform that is ADA-compliant. The tool comes with a full keyboard and assistive device navigation and complete screen reader support. The tool also automatically gives descriptions of the images in real time.

Weave

19. Dygraphs

Dygraphs is an open-source charting library based on JavaScript. This free tool can be used to analyze dense datasets. The tool is highly customizable and works well in all browsers. The tool offers strong support for error bars/ confidence intervals.

Image title

20. GanttPro

Apart from these, there are many data visualization tools that offer a free trial for a limited time. GanttPro, a project management tool, for instance, helps you create charts for projects for free during their 15-day trial period.

GanttPro

Data visualization is crucial for accurate data analysis. With the right tools in hand, you can easily summarize and explain complex data to your stakeholders. By leveraging actionable insights generated from data, companies can make big profits and savings. Just how big are we talking about? Netflix saved around $1 billion in 2017 with its ML algorithm that recommends personalized TV shows and movies to subscribers. When used right, data analysis and visualization have the power to change the way people live their lives.

출처: 20 Free and Open-Source Data Visualization Tools – DZone Big Data