| Histogram | Bar Chart |
 |  |
| The x-axis represents bins. So if you have a continuous variable like age which has values from 0-100 then you can create bins like 0-10, 10-20 and so on (and here bin size = 10). You can change the bin size to analyze the distribution of the data. X-axis has a numerical (quantitative) variable. | The x-axis represents distinct categories from your data. The variable on the x-axis is usually qualitative |
| The order of the bins is important since it is used to understand the distribution of the data. | The order of the categories in the bar chart doesn’t matter. We can sort it if we want but it’s not needed. |
Bar chart
Hadoop on Azure’s Javascript Interactive Console has basic graphing functions:
StandardThe Hadoop on Azure’s Javascript console has basic graphing functions: Bar, Line & Chart. I think this is great becuase it gives an opportunity to visualize data that’s in HDFS directly from the Interactive Javascript Console! Here’s a screenshot:
In the console, I ran the help(“graph”) command to see how I can use this function:
Draw a graph of data
graph.bar(data, options) Bar graph
graph.line(data, options) Line graph
graph.pie(data, options) Pie chart
Parameters
data (array) Array of data objects
options (object) Options object, with
x (string) Property to use for x-axis values
y (string) Property to use for y-axis values
title (string) Graph title
orientation (number) x-axis label orientation in degrees
tickInterval (number) x-axis tick interval
Conclusion:
In this blog-post, I posted that Hadoop on Azure’s Javascript Interactive Console has basic graphing functions.