PetscDrawHGCreate#

Creates a histogram data structure.

Synopsis#

#include "petscdraw.h" 
#include "petscsys.h" 
#include "petscviewer.h" 
PetscErrorCode PetscDrawHGCreate(PetscDraw draw, int bins, PetscDrawHG *hist)

Collective

Input Parameters#

  • draw - The window where the graph will be made

  • bins - The number of bins to use

Output Parameter#

  • hist - The histogram context

Notes#

The difference between a bar chart, PetscDrawBar, and a histogram, PetscDrawHG, is explained here https://stattrek.com/statistics/charts/histogram.aspx?Tutorial=AP

The histogram is only displayed when PetscDrawHGDraw() is called.

The MPI communicator that owns the PetscDraw owns this PetscDrawHG, but the calls to set options and add data are ignored on all processes except the zeroth MPI process in the communicator. All MPI processes in the communicator must call PetscDrawHGDraw() to display the updated graph.

See Also#

PetscDrawHGDestroy(), PetscDrawHG, PetscDrawBarCreate(), PetscDrawBar, PetscDrawLGCreate(), PetscDrawLG, PetscDrawSPCreate(), PetscDrawSP, PetscDrawHGSetNumberBins(), PetscDrawHGReset(), PetscDrawHGAddValue(), PetscDrawHGDraw(), PetscDrawHGSave(), PetscDrawHGView(), PetscDrawHGSetColor(), PetscDrawHGSetLimits(), PetscDrawHGCalcStats(), PetscDrawHGIntegerBins(), PetscDrawHGGetAxis(), PetscDrawAxis, PetscDrawHGGetDraw()

Level#

intermediate

Location#

src/sys/classes/draw/utils/hists.c

Index of all Draw routines
Table of Contents for all manual pages
Index of all manual pages