![]() Successive functions or datafiles plotted by a single command will be assigned successive linetypes in the current default sequence. The current linetype properties for a particular terminal can be previewed by issuing the test command after setting the terminal type. Several sample initialization files are provided in the distribution package. You can further customize the sequence of linetype properties interactively or in an initialization file. You can select this old behaviour via the command set colorsequence classic, but by default gnuplot version 5 uses a terminal-independent sequence of 8 colors. These colors and patterns were not guaranteed to be consistent across different terminal types although most used the color sequence red/green/blue/magenta/cyan/yellow. In older gnuplot versions, each terminal type provided a set of distinct "linetypes" that could differ in color, in thickness, in dot/dash pattern, or in some combination of color and dot/dash. It's actually a lot more powerful than that (the syntax will allow you to add 2 columns together to derive an x or y position for instance), but explaining all of that should probably be left for another question.Next: Layers Linetypes, colors, and styles And the label text is taken from the 1st column which is where we get the using 2:3:1. The y position is taken from the 3rd column. ![]() So here, the x position of the label is taken from the 2nd column. The numbers after the using specifier are columns in your datafile. so with can be w, wi, wit and gnuplot will recognize any of them since no other plot specifiers start with w. ![]() In general, gnuplot allows you to shorten a command to the shortest unique sequence of characters that can be used to identify it. For example, in the command above, u stands for using and w stands for with and tc stands for textcolor. Part of your confusion is probably gnuplot's shorthand notation for a lot of things. Plot 'test.dat' u 2:3:1 w labels point offset character 0,character 1 tc rgb "blue" I don't really know what the numbers around the colons mean, although I see them everywhere in others' code. 我尝试过类似 plot 'infile' using 2:2 with labels, 'infile' using 1:2 I want the second column on the x axis and the third column on the y axis and the first column to be the label attached to that point. I want to plot a csv file where the rows are data points and the three columns represent the data label, x value and y value respectively. I am new to gnuplot and am having trouble finding the meaning of some of the commands.
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