# Wolfram Mathematica

## Temperature MinMax

With the new function MinMax, the minimum and maximum values of a list can now be extracted at the same time.

A temperature dataset for the city of Yakutsk over a period of 15 years is generated.

In[1]:=
```data = AirTemperatureData[ Entity["City", {"Yakutsk", "Yakutia", "Russia"}], {{2001, 01}, {2015, 12}, "Month"}]```
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The resulting time series can be visualized with DateListPlot.

In[2]:=
`DateListPlot[data, FrameLabel -> Automatic]`
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These are the maximum and minimum temperatures over the period of 15 years.

In[3]:=
`periodextrema = MinMax[data]`
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This gives the maximum and minimum temperatures for each year.

In[4]:=
```yearextrema = MovingMap[MinMax, data, {Quantity[1, "Years"], Right, Quantity[1, "Years"]}]```
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Extract the extrema values of the first year.

In[5]:=
`yearextrema["FirstValue"]`
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Plot their variations over the period of 15 years.

In[6]:=
`DateListPlot[yearextrema, PlotMarkers -> Automatic]`
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