使用Gnuplot进行时间序列的线性回归 [英] Linear regression for time series with Gnuplot

问题描述

我是Gnuplot的忠实拥护者，在整个学业中都将其用于各种项目.

I am a big fan of Gnuplot and I used it all along my studies for various projects.

最近我想使用Gnuplot绘制一些时间序列图，例如减肥，锻炼结果，耗油量等.

Lately I wanted to use Gnuplot to chart some time series like weight loss, exercising results, gas consumptions etc.

因此，我像

set xdata time
set timefmt "%d.%m %Y"
set format x "%d.%m"

现在，我想使用拟合函数使我线性拟合.我的问题是，如果x轴与时间相关，我将无法正常工作.

Now I want to use the fit-function to give me a linear fit. My problem is, that I cannot get that to work if the x-axis is time-related.

推荐答案

然后将日期更改为数字，例如从第一个日期开始的天数，进行拟合，然后将数字再次转换回日期. 这样，您将获得常规" x和y数据集.

Then change the date to a number, for example a number of days starting from the first date, make the fit, and then convert the numbers back again into dates. That way you'll have "regular" x and y data set.

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