How to format decimals as fractions in SAS
source link: https://blogs.sas.com/content/iml/2014/04/10/how-to-format-decimals-as-fractions-in-sas.html
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How to format decimals as fractions in SAS
11Yesterday I blogged about the Hilbert matrix. The (i,j)th element of the Hilbert matrix has the value 1 / (i+j-1), which is the reciprocal of an integer.
However, the printed Hilbert matrix did not look exactly like the formula because the elements print as finite-precision decimals. For example, the last column of the matrix of size 5 is {0.2, 0.1666667, 0.1428571, 0.125, 0.1111111}. A colleague jokingly asked, "shouldn't the matrix contain fractions like 1/5, 1/6, 1/7, 1/8, and 1/9?"
To his surprise, I responded that SAS can actually print the matrix elements as fractions! SAS contains the FRACTw. format, which makes it easy to print decimals as their fractional equivalent in reduced form. Here is yesterday's matrix, printed as fractions:
print H[format=FRACT.];
I sometimes marvel at the variety of formats that are available in SAS software. From printing integers as Roman numerals to printing decimals as fractions, it seems like SAS has a format for all occasions.
What is your favorite SAS format? Why? Leave a comment.
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