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 PetscErrorCode ierr; 24 25 toplabel = "Top Label"; xlabel = "X-axis Label"; ylabel = "Y-axis Label"; legend = "Legend"; 26 27 ierr = PetscInitialize(&argc,&argv,NULL,help);if (ierr) return ierr; 28 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-x",&x,NULL)); 29 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-y",&y,NULL)); 30 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-width",&width,NULL)); 31 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-height",&height,NULL)); 32 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 33 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-nports",&nports,&useports)); 34 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-nolegend",&flg)); 35 if (flg) legend = NULL; 36 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-notoplabel",&flg)); 37 if (flg) toplabel = NULL; 38 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-noxlabel",&flg)); 39 if (flg) xlabel = NULL; 40 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-noylabel",&flg)); 41 if (flg) ylabel = NULL; 42 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-nolabels",&flg)); 43 if (flg) {toplabel = NULL; xlabel = NULL; ylabel = NULL;} 44 45 CHKERRQ(PetscDrawCreate(PETSC_COMM_WORLD,0,"Title",x,y,width,height,&draw)); 46 CHKERRQ(PetscDrawSetFromOptions(draw)); 47 if (useports) { 48 CHKERRQ(PetscDrawViewPortsCreate(draw,nports,&ports)); 49 CHKERRQ(PetscDrawViewPortsSet(ports,0)); 50 } 51 CHKERRQ(PetscDrawLGCreate(draw,1,&lg)); 52 CHKERRQ(PetscDrawLGSetUseMarkers(lg,PETSC_TRUE)); 53 CHKERRQ(PetscDrawLGGetAxis(lg,&axis)); 54 CHKERRQ(PetscDrawAxisSetColors(axis,PETSC_DRAW_BLACK,PETSC_DRAW_RED,PETSC_DRAW_BLUE)); 55 CHKERRQ(PetscDrawAxisSetLabels(axis,toplabel,xlabel,ylabel)); 56 CHKERRQ(PetscDrawLGSetLegend(lg,&legend)); 57 CHKERRQ(PetscDrawLGSetFromOptions(lg)); 58 59 for (i=0; i<=n; i++) { 60 xd = (PetscReal)(i - 5); yd = xd*xd; 61 CHKERRQ(PetscDrawLGAddPoint(lg,&xd,&yd)); 62 } 63 CHKERRQ(PetscDrawLGDraw(lg)); 64 CHKERRQ(PetscDrawLGSave(lg)); 65 66 CHKERRQ(PetscDrawViewPortsDestroy(ports)); 67 CHKERRQ(PetscDrawLGDestroy(&lg)); 68 CHKERRQ(PetscDrawDestroy(&draw)); 69 ierr = PetscFinalize(); 70 return ierr; 71 } 72 73 /*TEST 74 75 build: 76 requires: x 77 78 test: 79 output_file: output/ex1_1.out 80 81 TEST*/ 82