BEMLine quadCurvedPathWithPoints: results in index 0 beyond bounds for empty array

[sjmn]

A workaround hack: If I change line 157 in BEMLine.m from this:
if (!self.disableMainLine && self.bezierCurveIsEnabled) {
to this:
if (!self.disableMainLine && self.bezierCurveIsEnabled && self.points.count && self.bottomPointsArray.count && self.topPointsArray.count) {
it works OK.
This points to an apparent problem with my data array being empty, I think, although that shouldn't be the case. Is there some better way to avoid having BEMLine trying to draw with an empty data set?

I really appreciate using BEMSimpleLineGraph. Thanks for any help.

[Sam-Spencer]

Hi @sjmn, I'll look into this and get back to you. Could you provide some details on how exactly to replicate the issue?

[sjmn]

@Sam-Spencer the problem seems to have resolved itself - I'm now not sure how to replicate - thanks.

[carleihar]

@Sam-Spencer I'm replicating by returning BEMNullGraphValue for all my data points, which for me may happen before I'm finished fetching data.

[sjmn]

thanks @carleihar - yes same for me if array only contains null values and then my code returns BEMNullGraphValue in the - (CGFloat)lineGraph:(BEMSimpleLineGraphView *)graph valueForPointAtIndex:(NSInteger)index method. I'm adding a zero value to the beginning of all of my data arrays to get around this for now. Have you found any other solution?

[carleihar]

@sjmn Right now I am checking to see if my points array is empty, and if it is just removing the graph from the superview. Definitely not a pretty solution but it works.