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histfitserver.C File Reference

Detailed Description

This program demonstrates simultaneous update of histogram and fitted function.

Every second new random entries add and histogram fitted again. Required at least JSROOT version 5.1.1 to see correct fit function update in browser

#include "THttpServer.h"
#include "TH1F.h"
#include "TCanvas.h"
#include "TF1.h"
#include "TSystem.h"
void histfitserver(void)
auto serv = new THttpServer("http:8081");
auto h1 = new TH1F("h1", "histogram 1", 100, -5, 5);
auto c1 = new TCanvas("c1");
auto f1 = new TF1("f1", "gaus", -10, 10);
while (!gSystem->ProcessEvents()) {
h1->FillRandom("gaus", 100);
R__EXTERN TSystem * gSystem
Definition TSystem.h:559
bool Update(const std::shared_ptr< ROOT::Math::Minimizer > &min, const ROOT::Fit::FitConfig &fconfig, bool isValid, unsigned int ncalls=0)
Update the fit result with a new minimization status To be run only if same fit is performed with sam...
The Canvas class.
Definition TCanvas.h:23
1-Dim function class
Definition TF1.h:213
1-D histogram with a float per channel (see TH1 documentation)}
Definition TH1.h:575
virtual void FillRandom(const char *fname, Int_t ntimes=5000, TRandom *rng=nullptr)
Fill histogram following distribution in function fname.
Definition TH1.cxx:3526
virtual TFitResultPtr Fit(const char *formula, Option_t *option="", Option_t *goption="", Double_t xmin=0, Double_t xmax=0)
Fit histogram with function fname.
Definition TH1.cxx:3893
virtual void Draw(Option_t *option="")
Draw this histogram with options.
Definition TH1.cxx:3074
virtual void Sleep(UInt_t milliSec)
Sleep milliSec milli seconds.
Definition TSystem.cxx:440
virtual Bool_t ProcessEvents()
Process pending events (GUI, timers, sockets).
Definition TSystem.cxx:419
return c1
Definition legend1.C:41
TH1F * h1
Definition legend1.C:5
TF1 * f1
Definition legend1.C:11
Sergey Linev

Definition in file histfitserver.C.