which waveform viewer can be easily be integrated with c or c++?
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From: Richard Webb on 11 Aug 2010 18:37 On 11/08/10 05:27, Steve Pope wrote: > steveu<steveu(a)n_o_s_p_a_m.coppice.org> wrote: > >> Gnuplot is an excellent choice, but don't be put off by some of the >> material you can find about it on the web. You could easily mistake it for >> a Mickey Mouse function drawing program from a lot of the descriptions you >> will find. Its actually a rather powerful plotting tool, with a lot of >> flexibility for massaging the appearance of the images it produces. > > I haven't used it, but I imagine it beats Excel, which I often > use for plotting. > > (Excel has some advantages of its own, but I doubt they stack up.) > > Tangentially, I reserve the term "waveform viewer" for tools that > can probe into an annotated simulation. I do not think Gnuplot > can do that with C++, unless someone has gone to the effort of > merging it with a symbolic debugger. > > Steve Dislin is worth a look: : http://www.mps.mpg.de/dislin/
From: Grant Griffin on 13 Aug 2010 08:56
On 8/10/2010 8:31 PM, bharat pathak wrote: > I have a requirement, wherein my dsp datapath algorithms are > in C or C++. The input and output data is stored in memory > buffers. Now staying in C environment I want to see the plots > of the waveforms. So which waveform viewer could easily be > integrated in C/c++ environment. > > 1. once the figure window pops up, I should be able to zoom > into the plot. > > 2. multiple figure windows should be supported. > > 3. subplot should also be supported. > > I am looking for matlab plot kind of capabilities but more > from free and open source softwares. Hi Bharat, FWIW, I've looked for this sort of thing over the years and never have found anything that's suitable for my products, so I ended up rolling my own. It was a great deal of work, and evolved over a period of years. It's been beneficial, though, to get exactly what I want compared to making compromises with other solutions. ScopeDSP began many years ago using a "VBX" plotting control provided by Visual Basic, which could be accessed by C++. It was pretty good overall but it had an Achilles heal that it couldn't do bar plots with an arbitrary origin of the type typically used to display FFT results from an arbitrary base like -120 dB. That's when I started to write my own. That ended up being a good thing when Microsoft abandoned VBX controls a short time after hawking them as the next big thing. (.net is next. ;-) I've looked at gnuplot over the years, and it's very appealing in terms of being fairly easy to interface with via a pipe. It also has a lot of features. However, from a user's point of view, I always find its zooming to be a drag. I always feel like I'm slumming when I have to use it from Octave. (Not that Matlab's zooming is any better...) Ideally, this sort of thing would be available from wxWidgets, QT, or other similar cross-platform GUI toolkits. However, those don't seem to include a sophisticated plotting capability. Maybe they think that's out of their scope, or more likely, nobody has ever contributed something like that. So, I've thought of contributing my system, but since it's currently written in MFC, that would be a great deal of work. So it hasn't happened. Richard mentioned dislin; I think I've looked at that in the past but I can't remember why I didn't get too interested in it. I'll look at it again, though. You might also look at Python, which has something called "matplotlib" as an add-on. It's possible to mix C/C++ with Python. Or, you could maybe transliterate matplotlib into C/C++. That would probably be a lot of work, though. Overall, I'd think that gnuplot would be the easiest thing, if you don't mind slumming a little. :-) Grant -- _____________________________________________________________________ Grant R. Griffin Publisher of dspGuru http://www.dspguru.com Iowegian International Corporation http://www.iowegian.com See http://www.iowegian.com/img/contact.gif for e-mail address |