CODEWITHSUNDEEP
iosiphonecocoa-touchcore-plot
Brijesh Singh
Brijesh Singh

Reputation: 739

How to add crosshair vertical line in line graph using Core Plot framework?

I am using core plot framework for drawing the line graph in iPhone and it is working fine.I am displaying system time on X- axis and Temperature on Y- axis.I need to draw the cross hair vertical line that indicate the selected value on the line graph. for example enter image description here

I would highly appreciate if someone can give me some suggestion to solve this issue.

Thanks in advance.

Upvotes: 1

Views: 739

Answers (1)

Eric Skroch
Eric Skroch

Reputation: 27381

You can use another axis or scatter plot to draw the line. Using an axis is simpler if all you need is a single horizontal or vertical line. Set all of the tick and grid line styles to nil and use the orthogonalCoordinateDecimal to position it in the correct location. There is a demo using a scatter plot to draw a crosshairs over the selected point in the Mac version of the CPTTestApp example app.

Upvotes: 2

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