无法始终更新 Core-Plot 中的 CPXYPlotSpace

发布于 2024-10-19 04:48:51 字数 695 浏览 1 评论 0原文

我正在将 Core-Plot 用于 iPhone 应用程序。当用户更改记录数时，我尝试更新 CPXYPlotSpace。 plotSpace 在标题中定义。当视图加载时，我设置图表。当用户更改数据范围时，它有时会起作用。它在范围更改的前 3 或 4 次中起作用，之后我得到一个释放的指针未分配

这是我用来更新 CPXYPlotSpace 的代码：

if(plotSpace)
        [plotSpace release];

    plotSpace = (CPXYPlotSpace *)graph.defaultPlotSpace;

    plotSpace.xRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(0)
                                                   length:CPDecimalFromFloat(recordsLimit)];


    plotSpace.yRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(-25)
                                                   length:CPDecimalFromFloat(100)];

看起来像是一个踩踏问题？

原文

I'm using Core-Plot for an iPhone application. I'm trying to update the CPXYPlotSpace when the number of records is changed by the user. plotSpace is defined in the header. When the view loads, I setup the chart. When the user change the range of the data it works soem times. It works the first 3 or 4 times that the range is changed, after that I got a pointer being freed was not allocated

This is the code I'm using to update the CPXYPlotSpace:

if(plotSpace)
        [plotSpace release];

    plotSpace = (CPXYPlotSpace *)graph.defaultPlotSpace;

    plotSpace.xRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(0)
                                                   length:CPDecimalFromFloat(recordsLimit)];


    plotSpace.yRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(-25)
                                                   length:CPDecimalFromFloat(100)];

Looks like a tread issue?

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