带有错误栏绘制的gnuplot [英] gnuplot with errorbars plotting

问题描述

"file.txt"文件中的数据如下所示(显示示例行)

The data in my "file.txt" file are as in the following (sample row shown)

31 1772911000 6789494.2537881

请注意，第二列是平均值，第三列是 输入样本.因此，对于误差线，我需要在x轴值31处的误差线，误差线的起点是(第二列值)-(第三列值)，结束于(第二列值)+(第三列值) ).我尝试了以下方法:

Note that the second column is the mean and the third is the standard deviation of my input sample. So, for the error bar, I would need the bar at the x axis value 31, with the error bar start at (second column value)-(third column value), and end at (second column value)+(third column value). I tried the following:

plot "file.txt" using ($1-$2):1:($2+$1) with errorbars

但是结果不合适.有帮助吗?

but the result is inappropriate. Any help?

推荐答案

您需要x:y:err，所以请尝试

You need x:y:err, so try

plot "file.txt" using 1:2:3 with yerrorbars

您可能想要烛台.这些通常是一个带有误差线的框，误差线从顶部和底部延伸出来，但是将最小值和最大值设置为相同，应该会为您提供所需大小的框:

You may instead want candlesticks. These are generally a box with error bars extending out of the top and bottom, but setting the mins and maxes the same should give you boxes of the required size:

plot "file.txt" using 1:($2-$3):($2-$3):($2+$3):($2+$3) with candlesticks

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