The Datatypes command returns the list of data types of the columns of a DataFrame.

$\mathrm{prices}≔\mathrm{DataSeries}\left(⟨123000\,241000\,215000⟩\,'\mathrm{datatype}'='\mathrm{float}'\left[8\right]\right)$

$\mathrm{prices}≔\left[\begin{array}{cc}1& 123000.\\ 2& 241000.\\ 3& 215000.\end{array}\right]$

$\mathrm{nr\_bedrooms}≔\mathrm{DataSeries}\left(⟨1\,2\,2⟩\,'\mathrm{datatype}'='\mathrm{integer}'\left[1\right]\right)$

$\mathrm{nr\_bedrooms}≔\left[\begin{array}{cc}1& 1\\ 2& 2\\ 3& 2\end{array}\right]$

$\mathrm{has\_swimming\_pool}≔\mathrm{DataSeries}\left(⟨\mathrm{false}\,\mathrm{true}\,\mathrm{false}⟩\,'\mathrm{datatype}'='\mathrm{truefalse}'\right)$

$\mathrm{has\_swimming\_pool}≔\left[\begin{array}{cc}1& \mathrm{false}\\ 2& \mathrm{true}\\ 3& \mathrm{false}\end{array}\right]$

$\mathrm{house\_sales}≔\mathrm{DataFrame}\left(\mathrm{prices}\,\mathrm{nr\_bedrooms}\,\mathrm{has\_swimming\_pool}\,\mathrm{columns}=\left[\mathrm{Prices}\,\mathrm{`Nr\; of\; Bedrooms`}\,\mathrm{`Swimming\; Pool?`}\right]\right)$

$\mathrm{house\_sales}≔\left[\begin{array}{cccc}& \mathrm{Prices}& \mathrm{Nr\; of\; Bedrooms}& \mathrm{Swimming\; Pool?}\\ 1& 123000.& 1& \mathrm{false}\\ 2& 241000.& 2& \mathrm{true}\\ 3& 215000.& 2& \mathrm{false}\end{array}\right]$

$\mathrm{Datatypes}\left(\mathrm{house\_sales}\right)$

$\left[{\mathrm{float}}_8\,{\mathrm{integer}}_1\,\mathrm{truefalse}\right]$

The DataFrame/Datatypes command was introduced in Maple 2016.

For more information on Maple 2016 changes, see Updates in Maple 2016.