Data science is an interdisciplinary field that applies information from data across a wide range of application fields by using scientific methods, procedures, algorithms, and systems to infer knowledge and insights from noisy, structured, and unstructured data.
Data visualization libraries like matplotlib, Bokeh, bqplot, Plotnine, cufflinks, Altair, hvplot, Holoviews, seaborn and more.
Different Interactive charts Sunburst Charts, Sankey Diagrams (Alluvial), Candlestick Charts, Network Charts, Chord Diagram, Parallel Coordinates Plots, Radar Charts, Connection Map, Treemap, Choropleth Maps, Scatter & Bubble Maps.
Apart from this, you will find tutorials about time series data and its applications, creating dashboards, and other concepts.
For an in-depth understanding of the above concepts, check out the sections below.
A simple Python guide to add annotations to matplotlib charts. Tutorial explains annotations of different kinds like text labels, arrows, box annotations, bound annotations, and span annotations. Tutorial covers annotate() function to add arrow annotations in-depth.
A detailed guide on how to create interactive charts in Jupyter Notebook using Python library bqplot. Tutorial explains various chart types like scatter charts, bar charts, line charts, heatmaps, and many more. All charts are created using pyplot API of bqplot which is same as pyplot API of matplotlib. Tutorial is a good starting point for someone new to bqplot.
A detailed guide on how to use Python data visualization library Bokeh to create interactive charts. Tutorial covers various chart types like bar charts, scatter charts, line charts, pie charts, heatmaps, box whisker plots, and many more. Tutorial is a good starting point for someone who wants to learn bokeh.
A detailed guide on how to use Python data visualization library Holoviews to create interactive charts. Holoviews is built on top of bokeh, matplotlib, and plotly. It lets us create charts using one of them as a backend. The tutorial covers various charts like scatter plots, bar charts, histograms, violin plots, and histograms. It even covers how to combine simple charts to create complicated charts.
A detailed guide on how to create animation in Python using data visualization library Bokeh. Tutorial creates different types of chart animation like bar chart animation, candlestick chart animation, bubble chart animation, etc.
A simple guide on how to create interactive GUI / apps with widgets using Python Data viz library Bokeh. Tutorial explains how we can use widgets (dropdowns, radio buttons, checkboxes, date pickers, sliders, etc) available from bokeh with simple examples. Bokeh apps explained in tutorial use Python callbacks for updating charts.
A simple guide on how to add annotations to plotnine charts with simple examples. Plotnine is a Python data viz library that let us create static charts. Tutorial explains annotations like text labels, arrows, boxes, polygons, spans, slopes, etc.
A detailed guide to Python data visualization library Pandas_bokeh that let us create interactive bokeh charts from pandas dataframe with just one simple function call. Tutorial covers various charts (scatter, bar, step, line, pie, histogram, scatter maps, bubble maps, etc) available from library with simple examples.
A simple guide to add annotations to charts created using Python data viz library bokeh. Tutorial explains different annotations like arrows, labels, polygons, spans, ranges, bound, boxes, etc. We have also covered styling of these annotations with simple examples.
A simple guide to create interactive GUI using Python data viz library Bokeh and widgets library ipywidgets. Tutorial explains how we can link ipywidgets widgets (like dropdowns, checkboxes, sliders, etc) with Bokeh charts to dynamically update them with changes in widget states.
Data Visualization is a field of graphical representation of information / data. It is one of the most efficient ways of communicating information with users as humans are quite good at capturing patterns in data.
Python has a bunch of libraries that can help us create data visualizations. Some of these libraries (matplotlib, seaborn, plotnine, etc) generate static charts whereas others (bokeh, plotly, bqplot, altair, holoviews, cufflinks, hvplot, etc) generate interactive charts. Majority of basic visualizations like bar charts, line charts, scatter plots, histograms, box plots, pie charts, etc are supported by all libraries. Many libraries also support advanced visualization, widgets, and dashboards.
Basic Data Visualizations like bar charts, line charts, scatter plots, histograms, box plots, pie charts, etc are quite good at representing information and exploring relationships between data variables.
But sometimes these visualizations are not enough and we need to analyze data from different perspectives. For this purpose, many advanced visualizations are developed over time like Sankey diagrams, candlestick charts, network charts, chord diagrams, sunburst charts, radar charts, parallel coordinates charts, etc. Python has many data visualization libraries that let us create such advanced data visualizations.
Dashboards are literally everywhere and everyone is using them. Dashboards are GUI with various visualizations and metrics that can be used to monitor key performance indicators. Dashboards have a very wide range of applications in all fields.
Python has a bunch of libraries (dash, panel, streamlit, bokeh, etc) that let us create dashboards using them. They let us include widgets and interactive data visualizations in dashboards.
Time series is a type of data where data points are recorded in time order or at specified time intervals. Many real-world datasets like stock prices, weather indicators, heights of ocean tides, retail sales, etc.
Time series analysis involves various tasks like resampling time series, trying moving window functions, forecasting, classification, etc.
Python has various libraries (pandas, statsmodels, etc.) that let us load and work with time series data efficiently. They even provide useful functionalities to work with time series data.
Maps are one of the best ways to display and analyze geospatial data. It helps us better see patterns and trends geographically. This can help us with better decision-making.
Many different types of maps have been developed over time to analyze data from different perspectives. Some common map visualization types are choropleth maps, scatter maps, bubble maps, connection maps, etc. Apart from these, we can also include pins on maps to identify locations.
Python has many different libraries (geopandas, folium, ipyleaflet, cartopy, geoviews, geoplot, bokeh, altair, plotly, hvplot, etc) that let us create static as well as interactive maps.
Exploratory data analysis (commonly referred to as EDA) is an initial analysis of data to look for various relationships, anomalies, missing values, distributions, basic statistics, etc. It helps us understand data better to make further decisions. Various stats are calculated and statistical visualizations are created during EDA to understand data.
Python provides many different tools / libraries (Sweetviz, missingno, seaborn, pandas, etc) for performing EDA. It's quite common to use more than one of these tools to perform EDA.