1 2 static char help[] = "Makes a simple bar graph.\n"; 3 4 #include <petscsys.h> 5 #include <petscdraw.h> 6 7 int main(int argc,char **argv) 8 { 9 PetscDraw draw; 10 PetscDrawBar bar; 11 PetscDrawAxis axis; 12 PetscErrorCode ierr; 13 int color = PETSC_DRAW_ROTATE; 14 const char *xlabel,*ylabel,*toplabel; 15 const PetscReal values[] = {.3, .5, .05, .11}; 16 const char *const labels[] = {"A","B","C","D",NULL}; 17 PetscReal limits[2] = {0,0.55}; PetscInt nlimits = 2; 18 PetscBool nolabels,setlimits; 19 20 xlabel = "X-axis Label"; toplabel = "Top Label"; ylabel = "Y-axis Label"; 21 22 ierr = PetscInitialize(&argc,&argv,NULL,help);if (ierr) return ierr; 23 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-nolabels",&nolabels)); 24 if (nolabels) { xlabel = NULL; ylabel = NULL; toplabel = NULL; } 25 CHKERRQ(PetscOptionsGetRealArray(NULL,NULL,"-limits",limits,&nlimits,&setlimits)); 26 27 CHKERRQ(PetscDrawCreate(PETSC_COMM_WORLD,NULL,"Title",PETSC_DECIDE,PETSC_DECIDE,400,300,&draw)); 28 CHKERRQ(PetscDrawSetFromOptions(draw)); 29 CHKERRQ(PetscDrawBarCreate(draw,&bar)); 30 31 CHKERRQ(PetscDrawBarGetAxis(bar,&axis)); 32 CHKERRQ(PetscDrawAxisSetColors(axis,PETSC_DRAW_BLACK,PETSC_DRAW_RED,PETSC_DRAW_BLUE)); 33 CHKERRQ(PetscDrawAxisSetLabels(axis,toplabel,xlabel,ylabel)); 34 CHKERRQ(PetscDrawBarSetColor(bar,color)); 35 CHKERRQ(PetscDrawBarSetFromOptions(bar)); 36 37 if (setlimits) CHKERRQ(PetscDrawBarSetLimits(bar,limits[0],limits[1])); 38 CHKERRQ(PetscDrawBarSetData(bar,4,values,labels)); 39 CHKERRQ(PetscDrawBarDraw(bar)); 40 CHKERRQ(PetscDrawBarSave(bar)); 41 42 CHKERRQ(PetscDrawBarDestroy(&bar)); 43 CHKERRQ(PetscDrawDestroy(&draw)); 44 ierr = PetscFinalize(); 45 return ierr; 46 } 47 48 /*TEST 49 50 build: 51 requires: x 52 53 test: 54 output_file: output/ex1_1.out 55 56 TEST*/ 57