Hi Vadim,
see: http://root.cern.ch/root/roottalk/roottalk03/0796.html
Rene Brun
Khotilovich Vadim wrote:
>
> Hi,
>
> I'm trying to find the way to save the palette information with a
> colz-histogram into the root file (see the code below). When I open the file
> I see that the number of contours gets saved, but the colors are different.
> Also when I even just move something with mouse on the histogram that just
> was drawn I loose my colors too. I tried it in two versions: 3.03/06 and
> 3.05/00 from Fermi build. In 3.05/00 I also have the errors like that:
> root [0]
> Attaching file hsimple.root...
> Warning in <TClass::TClass>: no dictionary for class TPaletteAxis is available
> root [1]
> root [1] TBrowser b
> root [2] Error in <TBuffer::CheckByteCount>: object of class TPaletteAxis read
> too few bytes: 17 instead of 311
> Warning in <TBuffer::CheckByteCount>: TPaletteAxis::Streamer() not in sync
> with data on file, fix Streamer()
> Error in <TBuffer::CheckByteCount>: object of class TPaletteAxis read too few
> bytes: 4 instead of 298
> Warning in <TBuffer::CheckByteCount>: TPaletteAxis::Streamer() not in sync
> with data on file, fix Streamer()
>
> and also I see that the statistics box appears behind the palette then.
>
> One more question:
> in a simple setting, like in the example below, I managed to learn how to save
> the statistics boxes style settings in a file, but in a more complex system
> (the CDF online monitoring software) sometimes I can't figure out why it is
> not working (also SetContour(7) doesn't work for me there). So the question
> is: is there anything more I should know other then a) create histograms
> after setting the style, b) update canvas after drawing them?
>
> regards,
> Vadim
>
> file try.C:
> -----------------------------------------------------
> void setStyle(TStyle *st){
> st->SetOptStat(1110);
> st->SetStatColor(0);
> st->SetTitleColor(0);
> st->SetTitleW(0.57);
> st->SetCanvasBorderMode(0);
> st->SetFrameBorderMode(0);
> st->SetCanvasColor(0);
> }
>
> void try (){
> TList *l = new TList();
>
> TStyle *myStyle = new TStyle("xx","xx");
> setStyle(myStyle);
> TStyle *ssave = gStyle;
> myStyle->cd();
>
> TFile* hfile = new TFile("hsimple.root","RECREATE");
>
> int colours[]={1,12,28,39,47,3,5};
> gStyle->SetOptStat(1110);
> // gROOT->ForceStyle();
>
> TH2F *hist = new TH2F("Gaussian","Gaussian",10,-10,10,10,-10,10);
> TH2F *histb = new TH2F("GaussianB","GaussianB",20,-10,10,20,-10,10);
> gRandom->SetSeed();
> for (Int_t i = 0; i < 10000; i++){
> hist->Fill(gRandom->Gaus(0,5),gRandom->Gaus(0,5));
> histb->Fill(gRandom->Gaus(0,6),gRandom->Gaus(0,4));
> }
>
> TCanvas *c1 = new TCanvas("c1","c1",600,800);
> c1->Divide(1,2);
> c1->cd(1);
> hist->SetContour(7);
> gStyle->SetPalette(7,colours);
> // gROOT->ForceStyle();
> hist->Draw("colz");
> gPad->Update();
> c1->cd(2);
> gStyle->SetOptStat(10);
> histb->SetContour(7);
> gStyle->SetPalette(7,colours);
> histb->Draw("colz");
> c1->Modified();c1->Update();
>
> gStyle = ssave;
>
> l->Add(c1);
> l->Write();
> hfile->Write();
> }
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