I need to place a label at the right, above of a fitted average horizontal rule. I have an y-coordinate of the rule, but i don\'t know the coordinate of the right border of
You can use different coordinate systems for x and y values. The available coordinate systems are:
first: value on the left and bottom axes.second: value on the right and top axes.graph: relative to the area within the axes, 0,0 is bottom left and 1,1 is top right.screen: relative to the entire canvas.character: depends on the chosen font size.So, if your x-value should be relative to the graph, use graph 0.5, for the y-value you can use first yval:
set label at graph 0.5, first yval+ofs
Here, yval is the y-value of the horizontal line, and ofs is an offset in order to displace the label a bit.