Curved line charts

[ryancoughlin]

Wanted to see what you guys think of the possible option for curved/smooth line charts? Or if you have already consider it?

Either way, love what you're doing with this. Working great.

(This can be marked as an enhancement)

[myusuf3]

+1 for smoothing! I am even down to help out with some guidance.

[simonbromberg]

+1 from me as well

[terryworona]

Any ideas on how we could implement this?

[simonbromberg]

Bezier paths with curves?

https://developer.apple.com/library/ios/documentation/2ddrawing/conceptual/drawingprintingios/BezierPaths/BezierPaths.html

[ryancoughlin]

I was looking at this originally just to get an idea and retro fit where
needed. Minus the crazy swinging animation:
http://stackoverflow.com/questions/14571148/ios-animate-transformation-from-a-line-to-a-bezier-curve

On Sat, Apr 12, 2014 at 12:17 PM, simonbromberg [email protected]:

Bezier paths?

Reply to this email directly or view it on GitHubhttps://github.com//issues/23#issuecomment-40284613
.

[simonbromberg]

BEMSimpleLineGraph (https://github.com/Boris-Em/BEMSimpleLineGraph) seems to have an implementation of this.

[ktran03]

got bored, had a go at this. Checkout my pull request. First attempt at something like this, open to criticism :) cheers.

[terryworona]

Added this functionality via:

/**
 *  Returns whether or not a line should be rendered with curved connections and rounded end caps.
 *
 *  Default: NO
 *
 *  @param lineChartView    The line chart object requesting this information.
 *  @param lineIndex        An index number identifying a line in the chart.
 *
 *  @return Whether or not a line should smooth it's connections and end caps.
 */
- (BOOL)lineChartView:(JBLineChartView *)lineChartView smoothLineAtLineIndex:(NSUInteger)lineIndex;

Commit: 87b62ad
Version: v2.4.0

Thanks to @ktran03 for the PR!