How to draw a line at a specific x or y-axis position

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Hey,

I would like to know in a figure how can I draw a line at any given x or/and axis position.

I attached a figure as an example. How can I draw a dash line at temperature = 30 (or at weight = 1.0x10^3, the line will be horizontal in this case). I know one straightforward way is to add a column of data with fixed x or y value, and then append the data into the figure. But is there any other easier way to do it?

Thanks!!
Open Tools in the graph window using Command+T. Select line. Draw approximately where you want it. Select arrow. Double click on line. Select Co-ordinate System as plot relative to x and y axis and then enter the co-ordinates in the boxes below. You can specify if you want the line behind or in front by option clicking on the picture of a tree. Default is UserFront. Hope this helps.

February 4, 2013 at 09:44 am - Permalink

sjr51 wrote:
Open Tools in the graph window using Command+T. Select line. Draw approximately where you want it. Select arrow. Double click on line. Select Co-ordinate System as plot relative to x and y axis and then enter the co-ordinates in the boxes below. You can specify if you want the line behind or in front by option clicking on the picture of a tree. Default is UserFront. Hope this helps.



This is exactly what I want!! Thank you so much!!

February 4, 2013 at 10:56 am - Permalink