In our case, we want to place the key outside. Use the help key command for more information.
We would like to keep it inside for some plots: if the key is on top a plot, we can always place it to the left (top, center or bottom), center (top, center or bottom), or at the right (top center or bottom). Since the key is showing inside the box where we plot the figure, we would like to place it outside. If we plot more than one function, we would need to write a title for each plot). This title is the one that will be shown in the key. We need to add the option title at the end of the splot command.
GNUPLOT SET KEY CODE
We will reuse the code from the previous example and then we will use replot: Although we will use a 3D example, all the options apply for 2D plots.įirst of all, we will change the formula in the key by sinc (which is the function we are plotting). We will explain some of the options of the key and we will "fix" the figure above. In the example above, the key is on top of the level curves. Note: we can look for help about other commands in the same way. The Maxima-Gnuplot interface offers three terminal choices: default, ps and dumb. If in the subtopic option we write png and hit return we obtain the corresponding information for the png output terminal. Examples of the Maxima Gnuplot interface Basic usage. Terminals available on a particular gnuplot installation, type 'set terminal'Įpslatex epson_180dpi epson_60dpi epson_lx800 This document may describe terminal types that are not available to youīecause they were not configured or installed on your system. These are selected byĬhoosing an appropriate terminal type, possibly with additional modifying Gnuplot supports a large number of output formats. To obtain information about all possible output terminals and their corresponding configurations, one can refer to the built-in Gnuplot help with the command As you may imagine, the output options are highly configurable. reset clear set key off set title 'HH:MM versus Date (xdata is time)' Setting xdata to time precludes the use of histograms.
GNUPLOT SET KEY FULL
For time-based data, gnuplot needs a full using specification for the plot command.
In the previous example we have exported our plot to a png file using the default options. Note that set timefmt is not the same as set format x 'sometimeformat' the latter command refers to the x axis labels. Some of the fonts or symbols may not display as desired (as the X11 terminal is quite simple), but they would in a different format as we explain below. The figures in the following papers were also generated using GNUplot:īefore we start, and to improve the speed of the rendering and avoid possible crashes with big data files, we recommend using the X11 term: (check the tables near the end of the page) The frames of the following movies were generated using GNUplot (25fps) If set angles degrees is specified before set polar, then the. To see how powerful GNUplot can be check the following links: By default, gnuplot assumes the independent variable in polar graphs is in units of radians. At the end of the tutorial you should be able to produce high quality plots. With this tutorial we will try to show you the basics of plotting with GNUplot and we will show you some more advanced commands with examples. All the features that you learn for functions also apply to data files.
GNUPLOT SET KEY HOW TO
So let’s say you want to make a graph of a function f(x)=x^2+10/x, for values of x between -10 and 10.The best way to learn GNUplot is by plotting simple functions and learning how to plot them nicely. And of course, the values will not be continuous but discrete. How to plot a simple functionĪ major problem with MS Excel is that you cannot create a graph for a function you have to create the data in cells, using a formula. Just click “next” in every step and you’ll be ok.Īfter installation, start Gnuplot from the desktop icon. Go to and get the current version.Īfter downloading, installation is pretty easy and straightforward.
GNUPLOT SET KEY DOWNLOAD
How to download and installĭownload is provided from Sourcefourge. This article won’t cover many things, like 3D plots, polar coordinates, binary data, financial-style graphs and others take a look at the demo library for that (link given at the end).
As part of an investigation project at work, we had to create a number of graphs.
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