http://permalink.gmane.org/gmane.comp.graphics.qwt.general hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2431 <pre>Hi Uwe, Hi to all in the mailing list. First of all, is the mailing list still alive? I have stopped receiving mail from qwt-interest since a week. I have a QwtPlot that replots a curve of 1000 points at 10Hz. When the plot window is small, the cpu usage is reasonable. Increasing the application window (the plot area), the CPU goes 100% and the application hangs. I underline that the application CPU usage is low, but X goes 100%. In the case of appending one point at a time, using the low level draw() method and the canvas attributes indicated in the realtime plot example, the performance is much better. Is there any way to improve my plot in the case of full vector update? The mail I sent to the mailing list last friday is attached below. Can someone help with that too? Thanks -------------------------------------------------------------------------------------------------------------------------------------------------------- Hi to all. I have an x axis representing timestamps. I want to divi</pre> Giacomo 2010-03-10T11:21:03 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2430 <pre>Hi Giacomo, We have implemented that for our TauPlot. It draws the timestamps using human-readable strings that change dynamically depending on the range (e.g., it skips putting the year if you are looking at a minutes range) Have a look at the code for the TauTimeScale class (and its parent FancyScaleDraw). It is python, not C, but you may get an idea: https://tango-cs.svn.sourceforge.net/svnroot/tango-cs/tau/trunk/lib/tau/widget/qwt/scales.py Hope it helps. On Wednesday 10 March 2010 12:21:03 Giacomo wrote: </pre> Carlos Pascual Izarra 2010-03-10T11:41:21 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2429 <pre>Hi to all. I have an x axis representing timestamps. I want to divide the available space on the axis according to the dimension (in pixels) of the axis scale, and set the number of ticks proportionally to the number of pixels of the scale. I'd like to know which is the right place (also in terms of efficience) to calculate the scale division and apply it. I was also looking for, if someone has already implemented it, an algorithm to nicely distribute the time labels on the x axis. So far, I reimplement QwtScaleDraw::label(double ) virtual function to convert timestamps into a string representing hours mins and secs. Any suggestion on how to divide scale will be appreciated. Thanks Giacomo. ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta</pre> Giacomo 2010-03-05T11:12:16 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2428 <pre>Thanks a lot. I do it with the item provided by the checked signal of the plot. item-&gt;setVisible(on); item-&gt;setItemAttribute(QwtPlotItem::AutoScale, on); Albano On Wed, Mar 3, 2010 at 7:54 AM, Uwe Rathmann &lt;Uwe.Rathmann&lt; at &gt;tigertal.de&gt; wrote: ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> PaceyIV 2010-03-03T08:35:18 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2427 <pre> Also do "curve-&gt;setItemAttribute(QwtPlotItem::AutoScale, false);" to remove hidden items from autoscaling. Uwe ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> Uwe Rathmann 2010-03-03T06:54:56 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2426 <pre>David, I did try this but still have a frame with properly scaled axes but no plot curve. thanks harold ------------------------------------------------------------------------ Subject: Re: no curve visible From: David Stranz &lt;David_Stranz&lt; at &gt;MassSpec.com&gt; Date: Fri, 26 Feb 2010 12:56:39 -0800 To: List for both Qwt users and developers &lt;qwt-interest&lt; at &gt;lists.sourceforge.net&gt; To: List for both Qwt users and developers &lt;qwt-interest&lt; at &gt;lists.sourceforge.net&gt; Harold, It looks OK. Try adding curve1-&gt;setStyle( QwtPlotCurve::Lines ); Could be the default is QwtPlotCurve::NoCurve. David _______________________________________________________________ David Stranz, Ph.D. david_stranz&lt; at &gt;MassSpec.com Sierra Analytics, Inc. 5815 Stoddard Road, Suite 601 Modesto, CA 95356 Tel: (209) 545-8508 http://www.massspec.com _______________________________________________________________ harold garbeil wrote: ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Stu</pre> harold garbeil 2010-03-02T21:30:40 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2425 <pre>Hi, I've got a plot with some curves and I use the methods indicated in the cpu-plot example for hiding and show the curves when I click on the corresponding legend item. But in this way the axes do not scale according to the range of the visible data. How should I proceed? Thanks, Albano ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> PaceyIV 2010-03-02T19:49:23 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2424 <pre> On Mar 1, 2010, at 9:25 PM, Charlie Martin wrote: I can verify that I saw this problem with Qt 4.5.2 but it is gone with Qt 4.6.2! So I hope you are allowed to upgrade Qt. Joey ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> Joey Mukherjee 2010-03-02T15:17:14 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2423 <pre> On Feb 27, 2010, at 6:42, Uwe Rathmann wrote: Can anyone else verify if the rubberband zoom (in the bode plot) works on the Mac? I guess I'm a bit lost "on my own". However, if someone could give me some ideas of where to start, I could give it a try. Thanks, Charlie ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> Charlie Martin 2010-03-02T03:25:28 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2422 <pre>------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev_______________________________________________ qwt-interest mailing list qwt-interest&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/qwt-interest </pre> Vitali Anselm 2010-03-01T12:43:30 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2421 <pre> Never heard about such an incompatibility, but unfortunately I don't have a Mac to confirm thi. So I'm afraid you are on your own to identify the source of this problem. Uwe ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> Uwe Rathmann 2010-02-27T13:42:51 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2420 <pre>My qwt based application uses rubberband zooming. This works on Windows and Linux. On the Mac (Snow Leopard), the rubberband does not appear, but the zooming happens. The code is identical for all three platforms. The rubberband for zooming on the bode plot does not appear either. Are there any suggestions as to how I could get this to work? Thanks, Charlie ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> Charlie Martin 2010-02-26T21:02:44 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2419 <pre>Harold, It looks OK. Try adding curve1-&gt;setStyle( QwtPlotCurve::Lines ); Could be the default is QwtPlotCurve::NoCurve. David _______________________________________________________________ David Stranz, Ph.D.david_stranz&lt; at &gt;MassSpec.com Sierra Analytics, Inc. 5815 Stoddard Road, Suite 601 Modesto, CA 95356 Tel: (209) 545-8508 http://www.massspec.com _______________________________________________________________ harold garbeil wrote: ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> David Stranz 2010-02-26T20:56:39 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2418 <pre>Greetings I have been trying out qwt with a very simple application. I have not been able to get the plot to appear in the MainWindow but the curve is not visible. I am running qwt-5.2.0 with qt 4.6.2. Everything compiles fine, with the plot showing with proper axis scaling. Only thing missing is the curve. The code is fairly simple, with my "myPlot" (derived from QwtPlot) class looking like the following ... #include "myplot.h" MyPlot::MyPlot(QWidget *gv) : QwtPlot ( gv) { int i ; setTitle ("junk") ; QwtPlotCurve *curve1 = new QwtPlotCurve("Curve 1"); curve1-&gt;attach(this); // alloc memory for data arrays xdata = new double [100] ; ydata = new double [100] ; //load up test data for (i = 0; i &lt; 100; i++) { xdata[i] = i ; ydata[i] = i ; } curve1-&gt;setRawData(xdata, ydata, 100); curve1-&gt;setPen(QPen(Qt::red, 3)); this-&gt;replot() ; } ~ </pre> harold garbeil 2010-02-26T20:48:12 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2417 <pre> svn co https://qwt.svn.sourceforge.net/svnroot/qwt/trunk/qwt Check the friedberg example ( activate bars in the combo box ). Uwe ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> Uwe Rathmann 2010-02-23T12:13:05 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2416 <pre>2010/2/23 Uwe Rathmann &lt;Uwe.Rathmann&lt; at &gt;tigertal.de&gt;: Thank you very much. I will try that. ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> vti 2010-02-23T12:00:30 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2415 <pre>Hi, How can I plot a data (x, y+/-err)? Search in web I look for something like use QwtIntervalData, but sincerely I do not understand about use it. There is some example? Thank you </pre> José Thadeu Cavalcante 2010-02-23T12:00:07 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2414 <pre> Overload QwtPlotMagnifier::rescale - something like this: virtual void YourPlotMagnifier::rescale(double factor) { QwtPlotMagnifier::rescale(factor); emit ...; } Uwe ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> Uwe Rathmann 2010-02-23T11:39:54 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2413 <pre>Good day everyone. I have an app where I want a signal to be emitted whenever user uses mouse to magnify a plot. For example I want to set checkbox that controls autoscaling to unchecked mode when that happens. What I've came up with is writing my own QwtPlotMagnifier class when is going to be my own QwtCanvas event filter. But maybe there is an easier way to do that kind of interaction? Regards, vti ------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev </pre> vti 2010-02-23T11:31:20 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2412 <pre>Hi! It seems that you just don't undesrstand what function is. y=f(x) means that for every x value there is some y value. This means that you can have a table of the discrete x and y values. You can say that y = f(x) [y=3x^2/5 in your example] and you can say that x=f(y) [x = sqrt(5*y/3)]. The fact is that you can have tha table where every y value corresponds to x value and vise versa. And this table can then be plotted with QwtPlotCurve. В Mon, 22 Feb 2010 13:37:15 +0100 (CET) Vitali Anselm &lt;VitaliAnselm&lt; at &gt;web.de&gt; пишет: </pre> Sergey 2010-02-23T01:17:26 http://permalink.gmane.org/gmane.comp.graphics.qwt.general/2411 <pre>------------------------------------------------------------------------------ Download Intel&amp;#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev_______________________________________________ qwt-interest mailing list qwt-interest&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/qwt-interest </pre> Vitali Anselm 2010-02-22T12:37:15 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.graphics.qwt.general