CorePlot horizontal gradient on axis

Question

I'm trying to create a horizontal gradient on my y axis in CorePlot:

CPTGradient *axisGradient = [CPTGradient gradientWithBeginningColor:[CPTColor redColor] endingColor:[CPTColor yellowColor]];
axisGradient.angle = 180.f;

CPTMutableLineStyle *axisStyle = [y.axisLineStyle mutableCopy];
axisStyle.lineWidth = 6.f;
axisStyle.lineGradient = axisGradient;

y.axisLineStyle = axisStyle;

No matter what I set the gradient angle to the gradient is vertical. Anyone have any ideas?

Answer 1

Core Plot draws gradient line fills along the line path. If you want a tall, skinny rectangle filled with a gradient that fades from one color at the top to another at the bottom, use a plot space annotation. Create a CPTBorderedLayer for the annotation content and give it a gradient fill ([CPTFill fillWithGradient:axisGradient]).

Answer 2

for horizontal gradient you can use

CPTColor *areaColorStart       = [CPTColor colorWithComponentRed:0.74 green:0.78 blue:0.82 alpha:1];
CPTColor *areaColorEnd     = [CPTColor colorWithComponentRed:0.9 green:0.91 blue:0.92 alpha:.2];
CPTGradient *areaGradient1 = [CPTGradient gradientWithBeginningColor:areaColorStart endingColor:areaColorEnd];
areaGradient1.angle = 0.0f;
CPTFill *areaGradientFill = [CPTFill fillWithGradient:areaGradient1];
plot.areaFill       = areaGradientFill;
plot.areaBaseValue = CPTDecimalFromFloat(yRange);

hope it will help.