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