Select a point | iOS Chart Forums

This might need to be two separate questions, but is there a way to select a point in a line series. or, can I style a pointMarker differently for each data point?

I would prefer to not have to do this with annotations.

Version

2.5.0

iOS Style point marke select datapoint

Mobile Developers asked 1 year ago

You must login to post comments

Answers (1)

Hi There,

You can’t select points out of the box, but you can create custom special modifier similar to ours SeriesSelectionModifier.
As for styling – sure, you can style pointMarkers differently for each point via palette provider, please see the code below:

@interface PointMarkerPaletteProvider : SCIPaletteProvider
@end

@implementation PointMarkerPaletteProvider {
    SCILineSeriesStyle *_lineStyle;
}

- (instancetype)init {
    self = [super init];
    if (self) {
        _lineStyle = [SCILineSeriesStyle new];
        _lineStyle.pointMarker = [SCIEllipsePointMarker new];
        _lineStyle.pointMarker.fillStyle = [[SCISolidBrushStyle alloc] initWithColorCode:0xffff0000];
    }
    return self;
}

- (id<SCIStyleProtocol>)styleForX:(double)x Y:(double)y Index:(int)index {
    return index % 2 == 0 ? _lineStyle : nil;
}

@end