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title: "Smoothing a histogram plot"
canonical: "https://modelassist.epixanalytics.com/space/EA/26575470/Smoothing%20a%20histogram%20plot"
format: markdown
---
Most simulation software packages offer the facility to display histograms in two different ways. The default manner is the [relative frequency histogram plots](https://epixanalytics.atlassian.net/wiki/spaces/EA/pages/26575468/), in which histogram bars show the relative frequencies of values occurring in a given interval (figure 1).

  


  


![image](media://f87b172b-eca4-4001-8096-d0be2ee08746)

Figure 1. Histogram plots (default)

  


Some software packages also offer the facility to convert a histogram plot into an area graph (or outline graph in which the area under the curve is left white), where it essentially draws lines between the bottom right point of a histogram bar and the top left point of the next bar. We however don't recommend this approach because it also adds non-existent features to the curve.

  


![image](media://559e58c6-2105-468c-bb07-467e9dafd10e)

Figure 2. Histogram – Area Graph plots (**not** recommended)

  


  


  


  


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