1 2 static char help[] = "Plots a simple line graph.\n"; 3 4 #if defined(PETSC_APPLE_FRAMEWORK) 5 #import <PETSc/petscsys.h> 6 #import <PETSc/petscdraw.h> 7 #else 8 9 #include <petscsys.h> 10 #include <petscdraw.h> 11 #endif 12 13 int main(int argc,char **argv) 14 { 15 PetscDraw draw; 16 PetscDrawLG lg; 17 PetscDrawAxis axis; 18 PetscInt n = 15,i,x = 0,y = 0,width = 400,height = 300,nports = 1; 19 PetscBool useports,flg; 20 const char *xlabel,*ylabel,*toplabel,*legend; 21 PetscReal xd,yd; 22 PetscDrawViewPorts *ports = NULL; 23 24 toplabel = "Top Label"; xlabel = "X-axis Label"; ylabel = "Y-axis Label"; legend = "Legend"; 25 26 CHKERRQ(PetscInitialize(&argc,&argv,NULL,help)); 27 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-x",&x,NULL)); 28 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-y",&y,NULL)); 29 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-width",&width,NULL)); 30 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-height",&height,NULL)); 31 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 32 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-nports",&nports,&useports)); 33 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-nolegend",&flg)); 34 if (flg) legend = NULL; 35 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-notoplabel",&flg)); 36 if (flg) toplabel = NULL; 37 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-noxlabel",&flg)); 38 if (flg) xlabel = NULL; 39 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-noylabel",&flg)); 40 if (flg) ylabel = NULL; 41 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-nolabels",&flg)); 42 if (flg) {toplabel = NULL; xlabel = NULL; ylabel = NULL;} 43 44 CHKERRQ(PetscDrawCreate(PETSC_COMM_WORLD,0,"Title",x,y,width,height,&draw)); 45 CHKERRQ(PetscDrawSetFromOptions(draw)); 46 if (useports) { 47 CHKERRQ(PetscDrawViewPortsCreate(draw,nports,&ports)); 48 CHKERRQ(PetscDrawViewPortsSet(ports,0)); 49 } 50 CHKERRQ(PetscDrawLGCreate(draw,1,&lg)); 51 CHKERRQ(PetscDrawLGSetUseMarkers(lg,PETSC_TRUE)); 52 CHKERRQ(PetscDrawLGGetAxis(lg,&axis)); 53 CHKERRQ(PetscDrawAxisSetColors(axis,PETSC_DRAW_BLACK,PETSC_DRAW_RED,PETSC_DRAW_BLUE)); 54 CHKERRQ(PetscDrawAxisSetLabels(axis,toplabel,xlabel,ylabel)); 55 CHKERRQ(PetscDrawLGSetLegend(lg,&legend)); 56 CHKERRQ(PetscDrawLGSetFromOptions(lg)); 57 58 for (i=0; i<=n; i++) { 59 xd = (PetscReal)(i - 5); yd = xd*xd; 60 CHKERRQ(PetscDrawLGAddPoint(lg,&xd,&yd)); 61 } 62 CHKERRQ(PetscDrawLGDraw(lg)); 63 CHKERRQ(PetscDrawLGSave(lg)); 64 65 CHKERRQ(PetscDrawViewPortsDestroy(ports)); 66 CHKERRQ(PetscDrawLGDestroy(&lg)); 67 CHKERRQ(PetscDrawDestroy(&draw)); 68 CHKERRQ(PetscFinalize()); 69 return 0; 70 } 71 72 /*TEST 73 74 build: 75 requires: x 76 77 test: 78 output_file: output/ex1_1.out 79 80 TEST*/ 81