RE: [ROOT] PNG output?

From: Valeri Fine (fine@bnl.gov)
Date: Fri Apr 09 2004 - 16:49:50 MEST


> 
> Just FYI, it's ready under "multithreaded version of ROOT under
Windows ".
> Strangelly enough, it is not in CVS yet.

Hello Valeriy,
I did not understand 
Did you say the line

     c->Update()

 had been added to the pad2png.C ROOT macro?

  Thank you, Valeri Fine


> 
> Regards. Valeriy
> 
> 
> > He VAlii,
> > do you really tried ever) "what you promoted"
> > or you  just repeat(beleave to) an advertisment (sorry,
missspelling)
> >
> > Regards. Valeriy
> >
> > ----- Original Message -----
> > From: "Valeri Fine" <fine@bnl.gov>
> > To: "'Valeriy Onuchin'" <Valeri.Onoutchine@cern.ch>; "'Andy
Buckley'"
> <buckley@hep.phy.cam.ac.uk>; <roottalk@cern.ch>
> > Sent: Friday, April 09, 2004 12:54 AM
> > Subject: RE: [ROOT] PNG output?
> >
> >
> > > He VAliey
> > >
> > >
> > >   Can you make a tine correction for
> > >   $ROOTSYS/tutotrials/pad2png.C
> > >
> > >  Please add an operator
> > >     c->Update()
> > >  just before
> > >      gSystem->ProcessEvents();
> > >
> > > So entire macro to be as follows:
> > >
> > > (hires07) [151] more  pad2png.C
> > > void pad2png()
> > > {
> > >    // Create a canvas and save as png.
> > >
> > >    TCanvas *c = new TCanvas;
> > >    TH1F *h = new TH1F("gaus", "gaus", 100, -5, 5);
> > >    h->FillRandom("gaus", 10000);
> > >    h->Draw();
> > >
> > >    c->Update();
> > >    gSystem->ProcessEvents();
> > >
> > >    TImage *img = TImage::Create();
> > >
> > >    //img->FromPad(c, 10, 10, 300, 200);
> > >    img->FromPad(c);
> > >
> > >    img->WriteImage("canvas.png");
> > >
> > >    delete h;
> > >    delete c;
> > >    delete img;
> > > }
> > >
> > > To help the multithreaded version of ROOT with Qt layer under
Windows.
> > > It causes no harm.
> > > Thank you in advance,
> > >
> > > ----
> > > Best regards
> > >                    Valeri
> > >
> > >
> > > > -----Original Message-----
> > > > From: owner-roottalk@pcroot.cern.ch
> > > [mailto:owner-roottalk@pcroot.cern.ch] On
> > > > Behalf Of Valeriy Onuchin
> > > > Sent: Thursday, April 08, 2004 3:58 PM
> > > > To: Andy Buckley; roottalk@cern.ch
> > > > Subject: Re: [ROOT] PNG output?
> > > >
> > > >  Hi Andy,
> > > > ROOT supports "PNG bitmap".
> > > > Please, check $ROOTSYS/tutotrials/pad2png.C
> > > >
> > > > Regards. Valeriy
> > > >
> > > > win32gdk PNG is "almost ready" :-)
> > > >
> > > > >
> > > > > Hi again,
> > > > >
> > > > > Is there any possibility that PNG bitmap output can be
supplied in
> > > ROOT
> > > > > in addition to GIF format? This would be very nice, since GIF
has a
> > > > > certain stigma due to the LZW compression patent (even thought
I
> > > believe
> > > > > it's now expired) and since PNG is simply a nicer, more modern
> > > format.
> > > > > Apologies if it's already supported --- I couldn't find any
mention
> > > of
> > > > > it in the 4.00/03 release notes.
> > > > >
> > > > > Also, is there a way (e.g. a .rootrc directive) to specify the
> > > preferred
> > > > > output format from the canvas menu rather than have to drag
the
> > > > > drop-down list to the right position each time? This would
also be
> > > nice,
> > > > > but is rather less important!
> > > > >
> > > > > Andy
> > > > >
> > > > > --
> > > > > Andy Buckley, HEP Group, Cavendish Lab, Cambridge
> > > > > http://www.insectnation.org
> > > > >
> > > > >
> > >
> > >
> >



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