Set up the data like this:

X Y Y dashed Y solid

The X and Y data are in the first two columns, then formulas in the next
two columns look back at the indicator cell to determine whether the
values should equal Y or NA(). NA() will not plot in a line or XY chart.
The formula would look like this:

Y dashed:
=IF(<Y dashed,Y,NA())

Y solid
=IF(<Y solid),Y,NA())

where < indicate the condition to display that column, and Y is a link
to the corresponding cell in the original Y column.

Select the column of X values, then hold CTRL while selecting both Y
columns. Make your chart. Set the cell to display the dashed line, then
format the dashed line series. Set the cell to show the solid line, and
format the solid line series.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______


JeroenM wrote:

OK, but how can I make sure that the chart "knows" which line it has to draw,
a dotted or continuous one? This depends on the value of a cell somewhere in
the worksheet.

JeroenM.

"Barb Reinhardt" schreef:


If you want it dotted in some places and a line in others, you'll need to
have a series for the dotted line and a series for the solid line.

Good luck.

"JeroenM" wrote:


Hello,

I have the following question:
I have an Excel chart with a target line. In some cases I want to have the
target line as a dotted line, and sometines as a continuous line. Somewhere
on the worksheet is a cell wich determines if it must be a dotted or
continous line. Is it possible to make the chart in such way that if I
change the cell for continuous/dotted, the line in the chart is updated
automatically (from dotted to continuous or the other way).

Thanks in advance,

JeroenM.