of a numeric column histogram.py $input $out_file1 $numerical_column "$title" "$xlab" $breaks $density rpy .. class:: infomark **TIP:** To remove comment lines that do not begin with a *#* character, use *Text Manipulation->Remove beginning* .. class:: infomark **TIP:** If your data is not TAB delimited, use *Text Manipulation->Convert* ----- **Syntax** This tool computes a histogram of the numerical values in a column of a query. - All invalid, blank and comment lines in the query are skipped. The number of skipped lines is displayed in the resulting history item. - **Column for x axis** - only numerical columns are possible. - **Number of breaks(bars)** - breakpoints between histogram cells. Value of '0' will determine breaks automatically. - **Plot title** - the histogram title. - **Label for x axis** - the label of the x axis for the histogram. - **Include smoothed density** - if checked, the resulting graph will join the given corresponding points with line segments. ----- **Example** - Input file:: 1 68 4.1 2 71 4.6 3 62 3.8 4 75 4.4 5 58 3.2 6 60 3.1 7 67 3.8 8 68 4.1 9 71 4.3 10 69 3.7 - Create a histogram on column 2 of the above dataset. .. image:: ../static/images/histogram2.png