This macro illustrates the use of the time axis on a TGraph with data read from a text file containing the SWAN usage statistics during July 2017.
void gr108_timeSeriesFromCSV()
{
dir.
Append(
"/visualisation/graphs/");
g->SetTitle(
"SWAN Users during July 2017;Time;Number of Sessions");
int i = 0;
i++;
}
auto c =
new TCanvas(
"c",
"c", 950, 500);
g->GetYaxis()->CenterTitle();
xaxis->SetTimeDisplay(1);
xaxis->SetTimeFormat(
"%a %d");
xaxis->SetNdivisions(-219);
xaxis->SetLimits(
TDatime(2017, 7, 3, 0, 0, 0).Convert(),
TDatime(2017, 7, 22, 0, 0, 0).Convert());
xaxis->SetLabelSize(0.025);
}
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
char * Form(const char *fmt,...)
Formats a string in a circular formatting buffer.
This class stores the date and time with a precision of one second in an unsigned 32 bit word (950130...
A TGraph is an object made of two arrays X and Y with npoints each.
const char * Data() const
TString & ReplaceAll(const TString &s1, const TString &s2)
TString & Append(const char *cs)
- Authors
- Danilo Piparo, Olivier Couet
Definition in file gr108_timeSeriesFromCSV.C.