Scatter Plot Matrix (SPM) is an interactive visualization built with D3.js, it provides a feasible way to explore correlation and distribution of tabular data with multiple columns.
Compared with the one made by D3.js author Mike Bostock, my SPM has the following advantages:
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you can add or remove attribute you want to explore by double clicking on the column name in the list;
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categorical attributes will automatically be removed;
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plot size adjusts based on the number of columns you choose;
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it shows histogram of each attribute in diagonal cells, instead of pointless scatter plot of the attribute itself;
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it hides duplicated scatter plots to make the visual a bit neater.