# Creating a Scrolling chart

Excel
Sometimes you need to create a chart that shows a large data amount. Then it would be useful to insert a scroll bar in your chart:

To create a chart like one above (sales data for the week for three months), do the following:

## Step I: Create a chart

1.   Select the data (in this example, B2:C94).

Note: You can select any of the data cell and click Ctrl+Shift+Space to select the data range (see How to select row and column by keyboard and How to select a large data range in one click in Excel for more details).

2.   On the Insert ribbon, in the Charts group, click the Insert Line or Area Chart button:

Choose Line:

## Step II: Create additional data

1.   Enter 1 in any cell (for example, E2) - this number we will use for scrolling (the scrolling cell).

2.   On the Formulas tab, in the Defined Names group, click the Name Manager button:

3.   In the Name Manager dialog box, click the New... button:

4.   In the New Name dialog box:

• Type the name (for example, Dates) in the Name field.
• In the Refers To field, enter:

= OFFSET (Scroll!\$B\$2, Scroll!\$E\$2, 0, 7, 1).

This formula says to start from cell B2 of the Scroll sheet, move down the number of rows in cell E2, and then take a range that is 7 rows (one week) by the first column.

• Click OK to accept the name.

5.   Add another name (for example, Sales) with the followint formula in the Refers To box:

= OFFSET (Scroll!\$B\$2, Scroll!\$E\$2, 1, 7, 1).

The only change is that in the third argument, you move right one column to grab data from column C.

6.   Click the line series in the chart. Wait for the SERIES formula to appear in the formula bar. Edit the formula so that it looks like this:

= SERIES (Scroll!\$B\$2, Scroll!Dates, Scroll!Sales, 1):

Test the chart. Enter a new number between 1 and the date (in this example, 92) in the cell E2. The chart should change.

## Step III: Add a scroll bar

On the Developer tab (if you don't have the Developer tab available in the ribbon, see Show the Developer tab), in the Controls group, click the Insert button and then choose the Scroll Bar icon:

## Step IV: Customize the scroll bar

1.   Right-click the scroll bar and choose Format Control... in the popup menu:

2.   In the Format Control dialog box, on the Control tab:

• Change Minimum value to 1
• Change Maximum value to your maximum value
• Set Incremental Change to 1 (or if you want to 7, 10)
• In the Cell link field, choose a cell with the scroll point (in this example, E2).

3.   Click OK. Click outside the scrollbar to deselect it.

4.   To test the scrollbar, drag the slider. The value in cell E1 should change; the top chart should also change.

See also this tip in French: Comment créer un graphique de défilement.

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