On a recent JAVA project, we needed a free JAVA based real-time data plotting utility. After much searching, we found this tool called the Scientific Graphics Toolkit or SGT from NOAA. It seemed pretty robust, but we found out that it wasn't terribly configurable. Or at least not configurable enough to meet our needs. We ended up dig...

I have a series of performance tests I would like to show as a graph. I have a set of tests (about 10) which I run on a set of components (currently 3), and get throughput results.
The Y-axis would be the throughput result from the test, and the X-axis should have an abbreviated name of the test, with the results from the various compo...

I'm trying to change the background color of a single subplot in a MATLAB figure.
It's clearly feasible since the UI allows it, but I cannot find the function to automate it.
I've looked into whitebg, but it changes the color scheme of the whole figure, not just the current subplot.
(I'm using MATLAB Version 6.1 by the way)
...

When you plot things in Matlab, the most recently plotted data series is placed on top of whatever's already there. For example:
figure; hold on
plot(sin(linspace(0,pi)),'linewidth',4,'color',[0 0 1])
plot(cos(linspace(0,pi)),'linewidth',4,'color',[1 0 0])
Here, the red line is shown on top of the blue line (where they intersect). Is ...

I'm using polar plots (POLAR(THETA,RHO)) in MATLAB.
Is there an easy way to fix the range for the radial axis to say, 1.5?
I'm looking for something analogous to the xlim, ylim commands for cartesian axes. Haven't found anything in the docs yet.
Thanks in advance.
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Using gnuplot 4.2, is it possible to obtain the value of a specific column/row and use that value somehow?
For example, let's say my datafile contains the following
#1 2
7 13
5 11
23 17
53 12
For a simple plot where column 1 is the x axis and column 2 is the y axis I would:-
plot 'datafile' using 1:2
What I'm trying to do is to...

My realtime app generates a data log: 100 words of data @10Khz. I need to analyze it and produce some plots of the results. There are intermediate calculations involved - I need to take some differences, averages, etc. Excel would work fine, except for:
the 32000 item limit on graph data series is too small - that's only 3 seconds...

Why are there not more opensource easy to use charting libraries for Java?. The only successful opensource project in this area seems to be jfreechart, and it doesn't even have any documentation or examples available.
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What is the best way to send Direct3D output to a printer or a plotter?
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Hello all,
I looked at the different options for plotting functions (or other types of graphs) in an interactive window. I mostly use wxWidgets but I'd be open to any other "interfaces".
Looking at what is available, here is what I've found:
wxPlot: Not updated since 2006. But it would be a good candidate if it was...
wxMathPlot: Ve...

How do you plot bar charts in gnuplot with text labels?
(Sorry - I'm answering my own question here - as it suggest in the first entry of the faq)
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As per the title. I am trying to create a simple scater plot, but haven't found any Python 3.0 libraries that can do it. Note, this isn't for a website, so the web ones are a bit useless.
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The black lines are awfull, how I get rid of them? I want only the colored surfaces.
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Usually when I plot in Matlab it always draws on the same figure. How to make it draw in a new figure? I know it is pretty elementary, but I'm not finding it on Google.
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I know semilogx and semilogy for 2D plots. There is any equivalent for SURF and MESH?
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I would like to make California's map by the contour plot. However, I do not know how to get the necessary x, y and z -coordinates.
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Does anyone know any (preferably FOSS) C++ libraries that can draw basic graphs?
I'm looking for something rather simplistic. Everything I could find through Googling involved complex, scientific-oriented 3D graphs. MathGL seemed like a good choice but I'm afraid it might be way too complex for our project.
Thanks in advance!
See al...

I have a column in Excel, which I need to move from Excel to Sage.
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I have large data sets (10 Hz data, so 864k points per 24 Hours) which I need to plot in real time. The idea is the user can zoom and pan into highly detailed scatter plots.
The data is not very continuous and there are spikes. Since the data set is so large, I can't plot every point each time the plot refreshes.
But I also can't jus...

Hello. I like to know what libraries do you use for simple plot graphs? --Bar charts, line
charts, pie charts ... Particularly in Python.
Thanks!
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