On 2015-12-19 11:42+0100 Laurent Berger wrote:
> Thanks for your answer. I have missed option -locate and now I can see
> coordinate in example x01c. It's really a good idea to insert example name
> with function description in doc:-) .
> Now I want to get coordinates in a program like wxPLplotdemo and I don't know
> where to insert this function in my code. I have try to insert in mouse
> event( left button down) like this:
>
> void FenetreCourbe::OnLeftDown(wxMouseEvent& event)
> {
> PLGraphicsIn x;
> plGetCursor(&x);
> wxString s;
> s.Printf("%f %f %d %d",x.dX,x.dY,x.pX,x.pY);
> wxMessageBox(s);
> }
>
> but coordinates are always -1 -1 -1 -1 when I click in curve. I don't know
> what to modify to get this coordinates.
Hi Laurent:
I suggest you follow exactly what is done in example 1 code since that
obviously works for you. For example, surround the section of your
code that is outputting text with
pltext();
<text output code>
plgra();
To see more about these functions, look at
<http://plplot.sourceforge.net/docbook-manual/plplot-html-5.11.1/pltext.html>
and
<http://plplot.sourceforge.net/docbook-manual/plplot-html-5.11.1/plgra.html>.
Also my above advice is based on examples/c/x01.c, but assuming you want to
programme this in C++, you should follow the syntax for the PLplot
commands in examples/c++/x01.cc.
Alan
__________________________
Alan W. Irwin
Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).
Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
__________________________
Linux-powered Science
__________________________
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