gnuplot标签中可以有多种颜色吗?

问题描述

我在gnuplot中有这张图:

I have this graph in gnuplot:

我想包括三个彩色折线图的每一个的总计.一种可能性是用以下方式替换密钥:

I want to include totals for each of the three colored line graphs. One possibility is to replace the key with this:

我可以使用可以切换颜色的单个标签进行绘制吗?如果没有，那么我将不得不使用六个标签.在那种情况下，鉴于字符串的宽度可以变化，如何确定标签的坐标?我可以使用固定宽度的字体，并根据每个总数中的位数进行一些计算，但这似乎很乏味.

Can I plot this with a single label that switches colors? If not then I'd have to use six labels. In that case, how do I determine the coordinates of the labels given that the widths of the strings can vary? I could use a fixed width font and do some computation based on the number of digits in each of the totals but this seems tedious.

还有一种更聪明的方法来表示图中的总数吗?

Is there a more clever way to indicate totals in a graph?

推荐答案

您不能在单个标签内更改文本颜色，必须使用六个不同的标签.但是，有一些方法可以简化此过程:

You cannot change the textcolor inside a single label, you must use six different labels. However, there are some ways to simplify this:

• 在x方向上对彩色标签使用left和负offset，对数字使用right和正offset作为

• Use left and a negative offset in x-direction for the colored label, and right and a positive offset for the number, like

set label 1 right at graph 0.5, char 1 "FY2013" tc lt 1 offset char -0.5,0
set label 2 left at graph 0.5, char 1 "34,674" offset char 0.5,0

使用set macros并定义一个字符串变量anchor="graph 0.5, char 1"，该变量用于设置所有标签的锚点.

Use set macros and define a string variable anchor="graph 0.5, char 1" which you use to set the anchor point of all labels.

set macros
anchor="graph 0.5, char 1"
set label 1 at @anchor "FY2013" tc lt 1 offset char -0.5,0

将所有标签移动到单个锚点附近，并使用两个变量来参数化此点的偏移量:

Shift all labels around a single anchor point, and parametrize the offsets from this point using two variables:

set macros
anchor="graph 0.5, char 1"
ofs_x = 0.5
dx = 20
set label 1 right at @anchor "FY2013" tc lt 1 offset char -dx - ofs_x,0
set label 2 left at @anchor "34,674" offset char -dx + ofs_x,0
set label 3 right at @anchor "FY2014" tc lt 2 offset char -ofs_x,0
set label 4 left at @anchor "16,240" offset char ofs_x,0
set label 5 right at @anchor "FY2015" tc lt 3 offset char dx - ofs_x,0
set label 6 left at @anchor "6,863" offset char dx + ofs_x,0

set bmargin 3.5
plot -x

那仍然不是一个全自动的解决方案，但是归结为仅为anchor和dy选择适当的值.

That still isn't a fully automatic solution, but boils down to choosing appropriate values for the anchor and dy only.

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