How to Visualize Exa Data in Python with pandas

The rich ecosystem of Python modules lets you get to work quickly and integrate your systems more effectively. With the CData API Driver for Python, the pandas & Matplotlib modules, and the SQLAlchemy toolkit, you can build Exa-connected Python applications and scripts for visualizing Exa data. This article shows how to use the pandas, SQLAlchemy, and Matplotlib built-in functions to connect to Exa data, execute queries, and visualize the results.

With built-in optimized data processing, the CData Python Connector offers unmatched performance for interacting with live Exa data in Python. When you issue complex SQL queries from Exa, the driver pushes supported SQL operations, like filters and aggregations, directly to Exa and utilizes the embedded SQL engine to process unsupported operations client-side (often SQL functions and JOIN operations).

Connecting to Exa Data

Connecting to Exa data looks just like connecting to any relational data source. Create a connection string using the required connection properties. For this article, you will pass the connection string as a parameter to the create_engine function.

Start by setting the Profile connection property to the location of the Exa Profile on disk (e.g. C:\profiles\Exa.apip). Next, set the ProfileSettings connection property to the connection string for Exa (see below).

Exa API Profile Settings

Visit dashboard.exa.ai, sign in or create an account, and generate an API key from your API settings.

Follow the procedure below to install the required modules and start accessing Exa through Python objects.

Install Required Modules

Use the pip utility to install the pandas & Matplotlib modules and the SQLAlchemy toolkit:

pip install pandas
pip install matplotlib
pip install sqlalchemy

Be sure to import the module with the following:

import pandas
import matplotlib.pyplot as plt
from sqlalchemy import create_engine

Visualize Exa Data in Python

You can now connect with a connection string. Use the create_engine function to create an Engine for working with Exa data.

engine = create_engine("api:///?Profile=C:\profiles\Exa.apip&ProfileSettings='APIKey=your_api_key'")

Execute SQL to Exa

Use the read_sql function from pandas to execute any SQL statement and store the resultset in a DataFrame.

df = pandas.read_sql("SELECT RequestId, Answer FROM Answer WHERE RequestId = 'my-request-id'", engine)

Visualize Exa Data

With the query results stored in a DataFrame, use the plot function to build a chart to display the Exa data. The show method displays the chart in a new window.

df.plot(kind="bar", x="RequestId", y="Answer")
plt.show()

Free Trial & More Information

Download a free, 30-day trial of the CData API Driver for Python to start building Python apps and scripts with connectivity to Exa data. Reach out to our Support Team if you have any questions.

Full Source Code

import pandas
import matplotlib.pyplot as plt
from sqlalchemy import create_engin

engine = create_engine("api:///?Profile=C:\profiles\Exa.apip&ProfileSettings='APIKey=your_api_key'")
df = pandas.read_sql("SELECT RequestId, Answer FROM Answer WHERE RequestId = 'my-request-id'", engine)

df.plot(kind="bar", x="RequestId", y="Answer")
plt.show()