Hi Phil,
With some additional analysis from Laurent we were able to track down the cause:
The routine rd_data() in plbuf.c is reading a U_CHAR value, whereas the width
has been changed to a floating-point number. Changing the type solves the
problem:
switch ( op )
{
case PLSTATE_WIDTH: {
PLFLT width;
rd_data( pls, &width, sizeof ( PLFLT ) );
pls->width = width;
plP_state( PLSTATE_WIDTH );
break;
}
(The companion wr_data uses pls->width directly.)
Maybe we should recode this to:
rd_data( pls, &(pls->width), sizeof(pls->width);
so that the code is agnostic to the actual data type, just as wr_data() is.
That is what I have done in my repository – next step: get knowledgeable about
git ;).
Regards,
Arjen
From: Phil Rosenberg [mailto:[email protected]]
Sent: Friday, August 15, 2014 12:08 AM
To: Arjen Markus; laurent Berger; [email protected]
Subject: RE: [Plplot-devel] About svg
Arjen might well be right about the replot function, or maybe the stored replot
data. What happens if you resize a Plplot window? Does that also show problems?
Phil
________________________________
From: Arjen Markus<mailto:[email protected]>
Sent: 14/08/2014 15:08
To: laurent Berger<mailto:[email protected]>;
[email protected]<mailto:[email protected]>
Subject: Re: [Plplot-devel] About svg
Hi Laurent,
The odd thing is that the SVG plots produced _directly_ with one of the
standard examples shows all the right line widths. It must be that the replot
function (called in plotwindow->SavePlot(..)) is faulty – the line width might
not be set properly. It is not an area of Plplot I am familiar with though. (I
am still trying to figure out where the pls->width(..) function is overloaded).
Regards,
Arjen
> -----Original Message-----
> From: laurent Berger [mailto:[email protected]]
> Sent: Thursday, August 14, 2014 3:46 PM
> To: [email protected]
> Subject: Re: [Plplot-devel] About svg
>
> Thanks you for your answer.
> plplot 5.9.10, wxwidgets 3.0.0 visual studio 2012 C++ with pls->width( 2.0
> ); nothing
> changes.
> You can download source file and svg, ps and xfig here :
> perso.univ-lemans.fr/~berger/aqzersPLPLOT
> My source code is :
> wxPLplotstream* pls=plotwindow->GetStream(); int iMin=0,iMax=16383;
>
> const size_t np=65536;
> if (x[0]==NULL)
> for (int i=0;i<3;i++)
> {
> x[i]=new PLFLT[np];
> y[i]=new PLFLT[np];
> yFiltre[i]=new PLFLT[np];
> }
> PLFLT xmin=iMin, xmax=iMax;
> PLFLT ymin=1e30, ymax=-1e30;
> ....
>
> pls->adv( 0 );
> pls->scol0 ( 3, 0,0,255);
> pls->scol0 ( 4, 0,0,128);
> pls->scol0 ( 5, 0,255,0);
> pls->scol0 ( 6, 0,128,0);
> pls->scol0 ( 7, 255,0,0);
> pls->scol0 ( 8, 128,0,0);
>
> if(bgcolor)
> {
> pls->scol0( 0, 255, 255, 255 );
> pls->scol0( 15, 0, 0, 0 );
> }
> else
> {
> pls->scol0( 15, 255, 255, 255 );
> pls->scol0( 0, 0, 0, 0 );
> }
> pls->col0( 1 );
> pls->env( xmin, xmax, ymin*.99, ymax*1.01, 0, 0 ); col0( 2 ); lab( "x",
> pls->"y", "Histogram");
> for (int j=0;j<nbPlan;j++)
> {
> pls->col0( 3+2*j);
> pls->width( 2.0 );
> pls->line( nbGraines[j], x[j], y[j] );
> pls->col0( 4+2*j);
> pls->width( 3.0 );
> pls->line( nbGraines[j], x[j], yFiltre[j] );
> }
> pls->RenewPlot();
> Refresh();
> plotwindow->SavePlot(wxString("svg"),wxString("tt.svg"));
> plotwindow->SavePlot(wxString("xfig"),wxString("tt.xfig"));
> plotwindow->SavePlot(wxString("ps"),wxString("tt.ps"));
> //plotwindow->SavePlot(wxString("wxpng"),wxString("tt.png")); BUG
>
>
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