In order to prevent this, the legend has to be configured to be opaque with set key opaque: > gnuplot -e "set term dumb 60 20 set key opaque plot sin(4*x) title 'Hello World Hello World'"Ġ. (Found the solution while formulating the question, posting as Q&A). In this case, we could place the key using the at option: set key at 18,10.5. We would like to place it on the right of the figure. What we will do, instead, is to place the key manually where we want. For this particular example the command does not work well. 0.4 |*+ ** ** ** * * * * * * * * * * * * ** ** **-| However, in the previous figure, the color box is on top of the key. ![]() 0.2 |*+ ** ** * * * * * * * * * * * * * * * * ** **-| set key Left above left reverse nobox horizontal spacing 1 samplen 3.5 width 2. | ** * * * * * * * * * * * * * * * * * * * * ** *|Ġ |*+* * * * * * * * * * * * * * * * * * * * * * *+*| gnuplot> set key title 'Trigonometric Functions' gnuplot> plot sin (x), cos (x) If you want to rename the key it self, the instruction is provided here. However, I am seeing an issue, where the legend becomes obscured, causing the result to be unreadable. 1.Gnuplot's set term dumb is useful for visualizing data directly on a remote PC, where a GUI may not be available. # To make a table that has column1 = 0.05, 0.1. # below to do arithmetic on the columns with awk or the 'plot using' command # of each vector are represented by a column. # vectors together, I usually just make a table where the values # Instead of loading variables into a vector and multiplying # VECTORS, PLOTTING DATA FROM A FILE, PLOTTING SINGLE POINTS # The linestyle command is a shortcut to changing the points and line types each time # STORING AND USING A LINE TYPE AND POINT TYPE Try zooming the plot out: set xrange -2:12 set yrange -1.2:1.2 replot and zooming into a portion: set xrange 2:5 set yrange -0.75:0. By default gnuplot will automatically scale the axes to include all the data points, but this can be overridden if desired. ![]() Set arrow from 1,2 to 4,8.4 nohead lt -1 lw 1.2 Now explore setting the ranges on the X and Y axes manually. # use the arrow command with nohead to draw just a line: # DRAW A LINE OR ARROW BETWEEN TWO POINTS # lw chooses a line width 1=normal, can use 0.8, 0.3, 1.5, 3, etc. The R suite is much better suited for statistical analysis, but the plot generation capabilities aren’t as flexible and to my eye don’t look as good. # for postscipt -1=normal, 1=grey, 2=dashed, 3=hashed, 4=dot, 5=dot-dash After careful consideration of the alternatives on different platforms, I’ve concluded the best software for generating publication-quality plots is Gnuplot. ![]() # lt must be specified before pt for colored points # lt chooses a particular line type: -1=black 1=red 2=grn 3=blue 4=purple 5=aqua 6=brn 7=orange 8=light-brn # type 'test' to see the colors and point types available. # 7=filled circle, 8=triangle, 9=filled triangle, etc. # postscipt: 1=+, 2=X, 3=*, 4=square, 5=filled square, 6=circle, This places the key at the default location: set key default This disables the key: unset key This places a key at coordinates 2,3.5,2 in the default (first) coordinate system: set key at 2,3. # pt gives a particular point type: 1=diamond 2=+ 3=square 4=X 5=triangle 6=* usr/bin/env gnuplot set key above width -8 vertical maxrows 1 set terminal jpeg set output 'test. Since the key might then be too long to be fully displayed you might need to play with width: This code. # lt is for color of the points: -1=black 1=red 2=grn 3=blue 4=purple 5=aqua 6=brn 7=orange 8=light-brn setting the key to vertical and then specifying the maximum number of rows to 1 sets all keys in one row. # type 'test' to see the colors and point types available # for errorbar options type 'help plot errorbars' # choice of points, lines, linespoints, steps, boxes, errorbars, impulses, etc. # the noautoscale, xrange, yrange change the x- and y-limits ![]() # eps file each time I load, and then a third window running ghostview to view the eps file. # window running gnuplot where I simply keep loading in the new command file and it makes a new If you want to give the lines more meaningful names in the legend, use the title keyword when generating the plot: gnuplot> plot. For example, one could add set key font ',2' to Gnuplot which would change the size of the font in the key. I edit the command file in one window, have a second Along the learning curve, I made some notes for myself. I use now on my linux machines to make publication quality scientific Gnuplot is a free program that plots 2D and 3D data.
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