CODEWITHSUNDEEP
objective-ccore-plot
Hape42
Hape42

Reputation: 43

How can I draw vertical lines?

enter image description here

how can I draw a vertical line for each date

y-axis works well but why not x-axis?

code for x-axis:

CPTMutableLineStyle *majorGridLineStyle = [CPTMutableLineStyle lineStyle];
majorGridLineStyle.lineWidth = 2;
majorGridLineStyle.lineColor = [CPTColor redColor];

CPTXYAxisSet *axisSet = (CPTXYAxisSet *)graph.axisSet;

CPTXYAxis *x = [axisSet xAxis];
x.axisLineStyle = nil;
x.majorTickLineStyle = majorGridLineStyle;

[x setLabelingPolicy:CPTAxisLabelingPolicyNone];
x.majorGridLineStyle = majorGridLineStyle;

NSArray *subjectsArray = [self getSubjectTitlesAsArray];
[x setAxisLabels:[NSSet setWithArray:subjectsArray]];

code for y-axis:

CPTXYAxis *y = axisSet.yAxis;
y.axisLineStyle = nil;
y.majorTickLineStyle = nil;
y.minorTickLineStyle = nil;
y.majorIntervalLength = CPTDecimalFromString(@"500");
y.orthogonalCoordinateDecimal = CPTDecimalFromString(@"0");

y.majorGridLineStyle = gridLineStyle;

what is my mistake?

Upvotes: 0

Views: 348

Answers (2)

Hape42
Hape42

Reputation: 43

Thank you Eric !

for sure, there are some more elegant ways to code it, but I solved it like this:

    NSMutableSet *xMajorLocations = [NSMutableSet set];
[xMajorLocations addObject:[NSNumber numberWithFloat:0.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:1.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:2.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:3.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:4.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:5.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:6.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:7.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:8.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:9.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:10.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:11.0f]];
[xMajorLocations addObject:[NSNumber numberWithFloat:12.0f]];

x.majorTickLocations = xMajorLocations;

enter image description here

Upvotes: 0

Eric Skroch
Eric Skroch

Reputation: 27381

Core Plot will draw grid lines at the major tick locations. Make sure the date values correspond with the tick locations and gridLineStyle is a style that will appear against the white background.

Upvotes: 1

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