Posts Tagged ‘ Statistical Graphics ’

Append data to add markers to SAS graphs

November 30, 2016
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Append data to add markers to SAS graphs

Do you want to create customized SAS graphs by using PROC SGPLOT and the other ODS graphics procedures? An essential skill that you need to learn is how to merge, join, append, and concatenate SAS data sets that come from different sources. The SAS statistical graphics procedures (SG procedures) enable

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Highlight forecast regions in graphs

November 21, 2016
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Highlight forecast regions in graphs

A SAS customer asked how to uses background colors and a dashed line to emphasize the forecast region for a graph that shows a time series model. The task requires the following steps: Use the ATTRPRIORITY=NONE option on the ODS GRAPHICS statement to make sure that the current ODS style

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Visualize the ages of US presidents

November 14, 2016
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Visualize the ages of US presidents

Who was the oldest person elected president of the United States? How about the youngest? Who was the oldest when he left office? Let's look at some data. Wikipedia has a page that presents a table of the presidents of the US by age. It lists the dates for which

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Visualize a torus in SAS

November 9, 2016
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Visualize a torus in SAS

This article uses graphical techniques to visualize one of my favorite geometric objects: the surface of a three-dimensional torus. Along the way, this article demonstrates techniques that are useful for visualizing more mundane 3-D point clouds that arise in statistical data analysis. Define points on a torus A torus is

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Rotation matrices and 3-D data

November 7, 2016
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Rotation matrices and 3-D data

Rotation matrices are used in computer graphics and in statistical analyses. A rotation matrix is especially easy to implement in a matrix language such as the SAS Interactive Matrix Language (SAS/IML). This article shows how to implement three-dimensional rotation matrices and use them to rotate a 3-D point cloud. Define

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Ahh, that’s smooth! Anti-aliasing in SAS statistical graphics

October 24, 2016
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Ahh, that’s smooth! Anti-aliasing in SAS statistical graphics

I've written several articles about scatter plot smoothers: nonparametric regression curves that reveal small- and large-scale features of a response variable as a function of an explanatory variable. However, there is another kind of "smoothness" that you might care about, and that is the apparent smoothness of curves and markers

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Let PROC FREQ create graphs of your two-way tables

October 3, 2016
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Let PROC FREQ create graphs of your two-way tables

The recent releases of SAS 9.4 have featured major enhancements to the ODS statistical graphics procedures such as PROC SGPLOT. In fact, PROC SGPLOT (and the underlying Graph Template Language (GTL)) are so versatile and powerful that you might forget to consider whether you can create a graph automatically by

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Overlay a curve on a bar chart in SAS

September 12, 2016
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Overlay a curve on a bar chart in SAS

One of the strengths of the SGPLOT procedure in SAS is the ease with which you can overlay multiple plots on the same graph. For example, you can easily combine the SCATTER and SERIES statements to add a curve to a scatter plot. However, if you try to overlay incompatible

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