Core plot: Make x-axis ticks evenly spaced

Question

I have a core plot graph in which I have prices data. The x-axis represents the time, while the y represents the price. I've determined that it's this code specifically that determines the space in between the tick marks:

CGFloat dateCount = [timestamps count];
NSMutableSet *xLabels = [NSMutableSet setWithCapacity:dateCount];
NSMutableSet *xLocations = [NSMutableSet setWithCapacity:dateCount];
float i = 0;
for (NSString *date in timestampStrings) {
    CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:date textStyle:x.labelTextStyle];
    CGFloat location = i+=spaceBetweenXAxisTicks; // Here's where the space between is set
    label.tickLocation = CPTDecimalFromCGFloat(location);
    label.offset = x.majorTickLength;
    if (label) {
        [xLabels addObject:label];
        [xLocations addObject:[NSNumber numberWithFloat:location]];
    }
}

Is there some way to dynamically set the space in between so the last tick hits the right of the graph? Thanks!

Answer 1

The spaceBetweenXAxisTicks should be the length of the plot space xRange divided by the number of tick marks minus one (1).