5
我想修复这些轴,使它们始终位于绘图空间的左侧和底部。我目前的实现不启用userInteraction,因此不需要担心滚动。OBJ-C:核心绘图XY轴固定
// Setup plot space
CPXYPlotSpace *plotSpace = (CPXYPlotSpace *)graph.defaultPlotSpace;
plotSpace.allowsUserInteraction = NO;
// Axes
CPXYAxisSet *axisSet = (CPXYAxisSet *)graph.axisSet;
CPXYAxis *x = axisSet.xAxis;
//x.majorIntervalLength = CPDecimalFromString(@"0.5");
x.orthogonalCoordinateDecimal = CPDecimalFromString(@"0.5");
x.minorTicksPerInterval = 0;
x.labelingPolicy = CPAxisLabelingPolicyAutomatic;
CPXYAxis *y = axisSet.yAxis;
//y.majorIntervalLength = CPDecimalFromString(@"0.5");
y.minorTicksPerInterval = 0;
y.orthogonalCoordinateDecimal = CPDecimalFromString(@"0");
y.labelingPolicy = CPAxisLabelingPolicyAutomatic;
...
//Auto scale the plot space to fit the data
[plotSpace scaleToFitPlots:[NSArray arrayWithObject:boundLinePlot]];
CPPlotRange *xRange = plotSpace.xRange;
[xRange expandRangeByFactor:CPDecimalFromDouble(1.25)];
plotSpace.xRange = xRange;
CPPlotRange *yRange = plotSpace.yRange;
[yRange expandRangeByFactor:CPDecimalFromDouble(1.1)];
plotSpace.yRange = yRange;
编辑: 我想弄清楚如何我的x轴和y轴固定在图底部和剧情的左侧分别。我没有SS,但我基本上想要显示一个固定在预定位置的坐标轴。或者,是否有办法完全去除x轴,这样我就可以拥有一个y轴?如果是这样,将y轴锁定在固定位置更容易。
您遇到什么问题?也许屏幕截图或描述你观察到的行为给予代码会有所帮助。 – 2010-03-02 16:47:39