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绘制浮点数，无数据

[英]Plot flot points with no data

原文 2013-12-17 21:07:46 8 1 javascript/ flot

I was wondering, is there an easy way to plot points that have no data? 我想知道，是否有一种简便的方法来绘制没有数据的点？ For example, my dataset could have 例如，我的数据集可能有

[["2013-11-01", 1],["2013-11-03", 1],["2013-11-04", 1],["2013-11-05", 1]] [[“ 2013-11-01”，1]，[“ 2013-11-03”，1]，[“ 2013-11-04”，1]，[“ 2013-11-05”，1]]

I would like for flot to plot 2013-11-02 as 0. Otherwise, flot skips this and draws a line from 11-01 to 11-03. 我希望flot将2013-11-02绘制为0。否则，flot会跳过这一点并在11-01到11-03之间画一条线。 I'm trying to avoid this on the backend, so any solution using the library would be great. 我试图在后端避免这种情况，因此使用该库的任何解决方案都将是不错的选择。

1 个解决方案

Either set those data points to 0 or null (it does different things). 将这些数据点设置为0或为null（它做不同的事情）。

According to the documentation : 根据文档：

If a null is specified as a point or if one of the coordinates is null or couldn't be converted to a number, the point is ignored when drawing. 如果将null指定为点，或者坐标之一为null或无法转换为数字，则在绘制时将忽略该点。 As a special case, a null value for lines is interpreted as a line segment end, ie the points before and after the null value are not connected. 在特殊情况下，线的空值被解释为线段的末端，即空值之前和之后的点未连接。

So if you set it to null, you'll get your lines skipping that X-axis point. 因此，如果将其设置为null，则会使您的行跳过该X轴点。 If you set it to 0, your line will drop to zero until the next X-axis value. 如果将其设置为0，则行将下降为零，直到下一个X轴值为止。