1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Makes a simple histogram.\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscsys.h> 5c4762a1bSJed Brown #include <petscdraw.h> 6c4762a1bSJed Brown 7c4762a1bSJed Brown int main(int argc,char **argv) 8c4762a1bSJed Brown { 9c4762a1bSJed Brown PetscDraw draw; 10c4762a1bSJed Brown PetscDrawHG hist; 11c4762a1bSJed Brown PetscDrawAxis axis; 12c4762a1bSJed Brown int n = 20,i,x = 0,y = 0,width = 400,height = 300,bins = 8; 13c4762a1bSJed Brown PetscInt w = 400,h = 300,nn = 20,b = 8,c = PETSC_DRAW_GREEN; 14c4762a1bSJed Brown int color = PETSC_DRAW_GREEN; 15c4762a1bSJed Brown const char *xlabel,*ylabel,*toplabel; 16c4762a1bSJed Brown PetscReal xd; 17c4762a1bSJed Brown PetscBool flg; 18c4762a1bSJed Brown 19c4762a1bSJed Brown xlabel = "X-axis Label"; toplabel = "Top Label"; ylabel = "Y-axis Label"; 20c4762a1bSJed Brown 21*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscInitialize(&argc,&argv,NULL,help)); 225f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-width",&w,NULL)); 235f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-height",&h,NULL)); 245f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-n",&nn,NULL)); 255f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-bins",&b,NULL)); 265f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-color",&c,NULL)); 275f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsHasName(NULL,NULL,"-nolabels",&flg)); 28c4762a1bSJed Brown width = (int) w; height = (int)h; n = (int)nn; bins = (int) b; color = (int) c; 29c4762a1bSJed Brown if (flg) { xlabel = NULL; ylabel = NULL; toplabel = NULL; } 30c4762a1bSJed Brown 315f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawCreate(PETSC_COMM_WORLD,0,"Title",x,y,width,height,&draw)); 325f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawSetFromOptions(draw)); 335f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawHGCreate(draw,bins,&hist)); 345f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawHGSetColor(hist,color)); 355f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawHGGetAxis(hist,&axis)); 365f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawAxisSetColors(axis,PETSC_DRAW_BLACK,PETSC_DRAW_RED,PETSC_DRAW_BLUE)); 375f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawAxisSetLabels(axis,toplabel,xlabel,ylabel)); 385f80ce2aSJacob Faibussowitsch /*CHKERRQ(PetscDrawHGSetFromOptions(hist));*/ 39c4762a1bSJed Brown 40c4762a1bSJed Brown for (i=0; i<n; i++) { 41c4762a1bSJed Brown xd = (PetscReal)(i - 5); 425f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawHGAddValue(hist,xd*xd)); 43c4762a1bSJed Brown } 445f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawHGDraw(hist)); 455f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawHGSave(hist)); 46c4762a1bSJed Brown 475f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawHGDestroy(&hist)); 485f80ce2aSJacob Faibussowitsch CHKERRQ(PetscDrawDestroy(&draw)); 49*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscFinalize()); 50*b122ec5aSJacob Faibussowitsch return 0; 51c4762a1bSJed Brown } 52c4762a1bSJed Brown 53c4762a1bSJed Brown /*TEST 54c4762a1bSJed Brown 55c4762a1bSJed Brown build: 56c4762a1bSJed Brown requires: x 57c4762a1bSJed Brown 58c4762a1bSJed Brown test: 59c4762a1bSJed Brown output_file: output/ex1_1.out 60c4762a1bSJed Brown 61c4762a1bSJed Brown TEST*/ 62