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The shiny histograms, again
Do you remember those shiny histograms that we discussed some long, long time ago, at the beginning of the summer? And do you also remember how much of a hassle it was to create them, since we relied...
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A long shadow is cast on the plot...
A couple of days ago, Cedric asked the question how we could add a shadow to a pm3d surface plot. In some sense, the problem turned out to be easier, than I had expected, but I am not sure that I did...
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Patching gnuplot
One of the major advantages of open-source code is that if you would like to add some new features, you can easily do that. This applies to gnuplot, too, in fact, doing that does not require anything...
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Some basic statistics with gnuplot
In my previous post, I mentioned a patch that you can compile into gnuplot, and that should make plots with some statistical properties a bit easier. Now, the problem with that patch is that, if you...
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Update
I have had some time, so I moved all recent posts to their permanent place on my web page. I have "sexed up" the homepage a bit, so, hopefully, browsing will be a tad easier. Let me know, if there are...
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Broken histograms
Sometimes, a histogram is just a bit awkward, for the simple reason that one or two values are extremely high compared to the rest of the graph. In the case of a standard graph, we would use a broken...
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Restricting fit parameters
Chris asked an interesting question today, namely, how one can restrict the fit range in gnuplot. What he meant by that was not the range of the data points (that is really easy, the syntax is the same...
View ArticleNew version of gnuplot is released!
I have been waiting for this for a long time, but at long last, it has happened! The new version of gnuplot has been released with the designation 4.4. You can download the binary or the source code...
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Defining some new plot styles
I have long wanted to write a blog post on this subject, but somehow, I never got the time to do it. But the time has come, and I will do it now. One of the plot styles that I actually like in origin...
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Plot iterations and pseudo-files
As I promised some time ago, I will discuss some of the new features in gnuplot 4.4. The first one that I would like to show is the concept of iteration in the plot command, and the concept of certain...
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Further new features in gnuplot 4.4
Today I would like to discuss another new feature in gnuplot 4.4. This will be the notion of "inline" data manipulation. I don't really know what the proper name would be for this feature, so I will...
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The map, the inline function, and the macro
Some time ago, on the 26th of July, to be more accurate, I showed how somewhat decent-looking maps can be created with gnuplot. With the wisdom of hindsight, that was a rather ugly hack, I must say....
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Plotting in 6 dimensions - parametric plot from a file
Today I would like to touch on a vast subject, so prepare for a long post. However, I hope that the post will be worthwhile, for I want to discuss something that cannot be done in any other way. In due...
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Parametric plot from a file II.
As I promised yesterday, we will take a closer look at the pie chart, once more, and see how we can utilise what we have learnt recently. I should point out here, that this is not the only way of...
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Phong on histograms with a one-liner (almost:-)
We have seen in the last couple of posts that with the new concept of functions, quite a few interesting effects can be achieved. Today I would like to show a trick that solves a problem that I...
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Defining new symbols
Some time ago, I showed a method with which we could add a "frame" to a symbol. If you recall, what we did was to plot everything twice, and in order to duplicate our data set, we used a simple gawk...
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Bubble plots
Yesterday, I discussed a method for adding an edge to an arbitrary symbol. If you recall (or roll down on this page), the idea was to trick gnuplot into plotting our data file twice, but in a way that...
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Bending the arrows - "delaying" the plot
The other day, I would have needed a couple of curved arrows on my plot, so I started to work out a method to get what I wanted. This, however, turned out to be rather interesting, so I thought that I...
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Ministry of Silly Walks
In a comment last week, someone asked whether it was possible to draw a Marimekko plot, i.e., a histogram in which both directions contain relevant information. In other words, the question is whether...
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Ministry of Sillier Walks
In my last post, I have shown how we can define or read an array of number from a file. Having constructed the array, the question naturally arises: can we use it for something else, to do something...
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Broken axis, once more
I have discussed this subject at least on two occasions, and in fact, most of the present post was already described in one of my very first posts. However, I thought that it might be worthwhile to...
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Fence plots with a some-liner
About this time last year, I showed how one can produce fence plots in gnuplot, even if the data is from a file, not from a function. (The function plot is somewhat trivial, you can find it amongst the...
View ArticleA small (or big) diversion
In the past year, I have been trying to argue on these pages that gnuplot has some advantages over many other plotting utilities. Ultimate control over graph properties, the simplicity of plotting, the...
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Projecting contours
Karl asked a question some time ago, in which he wanted to know how one can produce this graph. As I pointed out in my reply, it is rather easy, if we can rotate the data file by 90 degrees. I will...
View ArticleNew gnuplot tricks
It's been a while since my last post on gnuplot, and this one is not going to be very technical. I just wanted to call your attention to the second edition of Philipp Janert's brilliant book, Gnuplot...
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