/*@C
PetscViewerDrawGetDrawAxis - Returns PetscDrawAxis object from PetscViewer object.
This PetscDrawAxis object may then be used to perform graphics using
PetscDrawAxisXXX() commands.
Collective on PetscViewer
Input Parameter:
+ viewer - the PetscViewer (created with PetscViewerDrawOpen()
- windownumber - indicates which subwindow (usually 0)
Ouput Parameter:
. drawaxis - the draw axis object
Level: advanced
Concepts: line graph^accessing context
.seealso: PetscViewerDrawGetDraw(), PetscViewerDrawGetLG(), PetscViewerDrawOpen()
@*/
PetscErrorCode PetscViewerDrawGetDrawAxis(PetscViewer viewer,PetscInt windownumber,PetscDrawAxis *drawaxis)
{
PetscErrorCode ierr;
PetscBool isdraw;
PetscViewer_Draw *vdraw;
PetscFunctionBegin;
PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,1);
PetscValidLogicalCollectiveInt(viewer,windownumber,2);
PetscValidPointer(drawaxis,3);
ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw);CHKERRQ(ierr);
if (!isdraw) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Must be draw type PetscViewer");
if (windownumber < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Window number cannot be negative");
vdraw = (PetscViewer_Draw*)viewer->data;
if (windownumber+vdraw->draw_base >= vdraw->draw_max || !vdraw->draw[windownumber+vdraw->draw_base]) {
ierr = PetscViewerDrawGetDraw(viewer,windownumber,NULL);CHKERRQ(ierr);
}
if (!vdraw->drawaxis[windownumber+vdraw->draw_base]) {
ierr = PetscDrawAxisCreate(vdraw->draw[windownumber+vdraw->draw_base],&vdraw->drawaxis[windownumber+vdraw->draw_base]);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)viewer,(PetscObject)vdraw->drawaxis[windownumber+vdraw->draw_base]);CHKERRQ(ierr);
}
*drawaxis = vdraw->drawaxis[windownumber+vdraw->draw_base];
PetscFunctionReturn(0);
}
/*@
PetscDrawLGCreate - Creates a line graph data structure.
Collective over PetscDraw
Input Parameters:
+ draw - the window where the graph will be made.
- dim - the number of curves which will be drawn
Output Parameters:
. outctx - the line graph context
Level: intermediate
Concepts: line graph^creating
.seealso: PetscDrawLGDestroy()
@*/
PetscErrorCode PetscDrawLGCreate(PetscDraw draw,PetscInt dim,PetscDrawLG *outctx)
{
PetscErrorCode ierr;
PetscBool isnull;
PetscObject obj = (PetscObject)draw;
PetscDrawLG lg;
PetscFunctionBegin;
PetscValidHeaderSpecific(draw,PETSC_DRAW_CLASSID,1);
PetscValidPointer(outctx,2);
ierr = PetscObjectTypeCompare(obj,PETSC_DRAW_NULL,&isnull);CHKERRQ(ierr);
if (isnull) {
ierr = PetscDrawOpenNull(((PetscObject)obj)->comm,(PetscDraw*)outctx);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
ierr = PetscHeaderCreate(lg,_p_PetscDrawLG,int,PETSC_DRAWLG_CLASSID,0,"PetscDrawLG","Line graph","Draw",((PetscObject)obj)->comm,PetscDrawLGDestroy,0);CHKERRQ(ierr);
lg->view = 0;
lg->destroy = 0;
lg->nopts = 0;
lg->win = draw;
lg->dim = dim;
lg->xmin = 1.e20;
lg->ymin = 1.e20;
lg->xmax = -1.e20;
lg->ymax = -1.e20;
ierr = PetscMalloc2(dim*CHUNCKSIZE,PetscReal,&lg->x,dim*CHUNCKSIZE,PetscReal,&lg->y);CHKERRQ(ierr);
ierr = PetscLogObjectMemory(lg,2*dim*CHUNCKSIZE*sizeof(PetscReal));CHKERRQ(ierr);
lg->len = dim*CHUNCKSIZE;
lg->loc = 0;
lg->use_dots= PETSC_FALSE;
ierr = PetscDrawAxisCreate(draw,&lg->axis);CHKERRQ(ierr);
ierr = PetscLogObjectParent(lg,lg->axis);CHKERRQ(ierr);
*outctx = lg;
PetscFunctionReturn(0);
}
/*@C
PetscDrawBarCreate - Creates a bar graph data structure.
Collective over PetscDraw
Input Parameters:
. draw - The window where the graph will be made
Output Parameters:
. bar - The bar graph context
Notes: Call PetscDrawBarSetData() to provide the bins to be plotted and then PetscDrawBarDraw() to display the new plot
The difference between a bar chart, PetscDrawBar, and a histogram, PetscDrawHG, is explained here http://stattrek.com/statistics/charts/histogram.aspx?Tutorial=AP
The MPI communicator that owns the PetscDraw owns this PetscDrawBar, but the calls to set options and add data are ignored on all processes except the
zeroth MPI process in the communicator. All MPI processes in the communicator must call PetscDrawBarDraw() to display the updated graph.
Level: intermediate
Concepts: bar graph^creating
.seealso: PetscDrawLGCreate(), PetscDrawLG, PetscDrawSPCreate(), PetscDrawSP, PetscDrawHGCreate(), PetscDrawHG, PetscDrawBarDestroy(), PetscDrawBarSetData(),
PetscDrawBar, PetscDrawBarDraw(), PetscDrawBarSave(), PetscDrawBarSetColor(), PetscDrawBarSort(), PetscDrawBarSetLimits(), PetscDrawBarGetAxis(), PetscDrawAxis,
PetscDrawBarGetDraw(), PetscDrawBarSetFromOptions()
@*/
PetscErrorCode PetscDrawBarCreate(PetscDraw draw,PetscDrawBar *bar)
{
PetscDrawBar h;
PetscErrorCode ierr;
PetscFunctionBegin;
PetscValidHeaderSpecific(draw,PETSC_DRAW_CLASSID,1);
PetscValidPointer(bar,2);
ierr = PetscHeaderCreate(h,PETSC_DRAWBAR_CLASSID,"DrawBar","Bar Graph","Draw",PetscObjectComm((PetscObject)draw),PetscDrawBarDestroy,NULL);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)draw,(PetscObject)h);CHKERRQ(ierr);
ierr = PetscObjectReference((PetscObject)draw);CHKERRQ(ierr);
h->win = draw;
h->view = NULL;
h->destroy = NULL;
h->color = PETSC_DRAW_GREEN;
h->ymin = 0.; /* if user has not set these then they are determined from the data */
h->ymax = 0.;
h->numBins = 0;
ierr = PetscDrawAxisCreate(draw,&h->axis);CHKERRQ(ierr);
h->axis->xticks = NULL;
*bar = h;
PetscFunctionReturn(0);
}
/*@C
PetscViewerDrawGetDrawAxis - Returns PetscDrawAxis object from PetscViewer object.
This PetscDrawAxis object may then be used to perform graphics using
PetscDrawAxisXXX() commands.
Not Collective (but PetscDrawAxis object will be parallel if PetscViewer is)
Input Parameter:
+ viewer - the PetscViewer (created with PetscViewerDrawOpen()
- windownumber - indicates which subwindow (usually 0)
Ouput Parameter:
. drawaxis - the draw axis object
Level: advanced
Concepts: line graph^accessing context
.seealso: PetscViewerDrawGetDraw(), PetscViewerDrawGetLG(), PetscViewerDrawOpen()
@*/
PetscErrorCode PETSC_DLLEXPORT PetscViewerDrawGetDrawAxis(PetscViewer viewer,PetscInt windownumber,PetscDrawAxis *drawaxis)
{
PetscErrorCode ierr;
PetscTruth isdraw;
PetscViewer_Draw *vdraw = (PetscViewer_Draw*)viewer->data;;
PetscFunctionBegin;
PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,1);
PetscValidPointer(drawaxis,3);
ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_DRAW,&isdraw);CHKERRQ(ierr);
if (!isdraw) {
SETERRQ(PETSC_ERR_ARG_WRONG,"Must be draw type PetscViewer");
}
if (windownumber < 0) {
SETERRQ(PETSC_ERR_ARG_OUTOFRANGE,"Window number cannot be negative");
}
if (windownumber+vdraw->draw_base >= vdraw->draw_max || !vdraw->draw[windownumber+vdraw->draw_base]) {
ierr = PetscViewerDrawGetDraw(viewer,windownumber,PETSC_NULL);CHKERRQ(ierr);
}
if (!vdraw->drawaxis[windownumber+vdraw->draw_base]) {
ierr = PetscDrawAxisCreate(vdraw->draw[windownumber+vdraw->draw_base],&vdraw->drawaxis[windownumber+vdraw->draw_base]);CHKERRQ(ierr);
ierr = PetscLogObjectParent(viewer,vdraw->drawaxis[windownumber+vdraw->draw_base]);CHKERRQ(ierr);
}
*drawaxis = vdraw->drawaxis[windownumber+vdraw->draw_base];
PetscFunctionReturn(0);
}
/* collective on KSP */
PetscErrorCode KSPPlotEigenContours_Private(KSP ksp,PetscInt neig,const PetscReal *r,const PetscReal *c)
{
PetscErrorCode ierr;
PetscReal xmin,xmax,ymin,ymax,*xloc,*yloc,*value,px0,py0,rscale,iscale;
PetscInt M,N,i,j;
PetscMPIInt rank;
PetscViewer viewer;
PetscDraw draw;
PetscDrawAxis drawaxis;
PetscFunctionBegin;
ierr = MPI_Comm_rank(((PetscObject)ksp)->comm,&rank);CHKERRQ(ierr);
if (rank) PetscFunctionReturn(0);
M = 80;
N = 80;
xmin = r[0]; xmax = r[0];
ymin = c[0]; ymax = c[0];
for (i=1; i<neig; i++) {
xmin = PetscMin(xmin,r[i]);
xmax = PetscMax(xmax,r[i]);
ymin = PetscMin(ymin,c[i]);
ymax = PetscMax(ymax,c[i]);
}
ierr = PetscMalloc3(M,PetscReal,&xloc,N,PetscReal,&yloc,M*N,PetscReal,&value);CHKERRQ(ierr);
for (i=0; i<M; i++) xloc[i] = xmin - 0.1*(xmax-xmin) + 1.2*(xmax-xmin)*i/(M-1);
for (i=0; i<N; i++) yloc[i] = ymin - 0.1*(ymax-ymin) + 1.2*(ymax-ymin)*i/(N-1);
ierr = PolyEval(neig,r,c,0,0,&px0,&py0);CHKERRQ(ierr);
rscale = px0/(PetscSqr(px0)+PetscSqr(py0));
iscale = -py0/(PetscSqr(px0)+PetscSqr(py0));
for (j=0; j<N; j++) {
for (i=0; i<M; i++) {
PetscReal px,py,tx,ty,tmod;
ierr = PolyEval(neig,r,c,xloc[i],yloc[j],&px,&py);CHKERRQ(ierr);
tx = px*rscale - py*iscale;
ty = py*rscale + px*iscale;
tmod = PetscSqr(tx) + PetscSqr(ty); /* modulus of the complex polynomial */
if (tmod > 1) tmod = 1.0;
if (tmod > 0.5 && tmod < 1) tmod = 0.5;
if (tmod > 0.2 && tmod < 0.5) tmod = 0.2;
if (tmod > 0.05 && tmod < 0.2) tmod = 0.05;
if (tmod < 1e-3) tmod = 1e-3;
value[i+j*M] = PetscLogScalar(tmod) / PetscLogScalar(10.0);
}
}
ierr = PetscViewerDrawOpen(PETSC_COMM_SELF,0,"Iteratively Computed Eigen-contours",PETSC_DECIDE,PETSC_DECIDE,450,450,&viewer);CHKERRQ(ierr);
ierr = PetscViewerDrawGetDraw(viewer,0,&draw);CHKERRQ(ierr);
ierr = PetscDrawTensorContour(draw,M,N,PETSC_NULL,PETSC_NULL,value);CHKERRQ(ierr);
if (0) {
ierr = PetscDrawAxisCreate(draw,&drawaxis);CHKERRQ(ierr);
ierr = PetscDrawAxisSetLimits(drawaxis,xmin,xmax,ymin,ymax);CHKERRQ(ierr);
ierr = PetscDrawAxisSetLabels(drawaxis,"Eigen-counters","real","imag");CHKERRQ(ierr);
ierr = PetscDrawAxisDraw(drawaxis);CHKERRQ(ierr);
ierr = PetscDrawAxisDestroy(&drawaxis);CHKERRQ(ierr);
}
ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
ierr = PetscFree3(xloc,yloc,value);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
/*@C
PetscDrawHGCreate - Creates a histogram data structure.
Collective over PetscDraw
Input Parameters:
+ draw - The window where the graph will be made
- bins - The number of bins to use
Output Parameters:
. hist - The histogram context
Level: intermediate
Concepts: histogram^creating
.seealso: PetscDrawHGDestroy()
@*/
PetscErrorCode PetscDrawHGCreate(PetscDraw draw, int bins, PetscDrawHG *hist)
{
PetscBool isnull;
PetscDrawHG h;
PetscErrorCode ierr;
PetscFunctionBegin;
PetscValidHeaderSpecific(draw, PETSC_DRAW_CLASSID,1);
PetscValidLogicalCollectiveInt(draw,bins,2);
PetscValidPointer(hist,3);
ierr = PetscDrawIsNull(draw,&isnull);CHKERRQ(ierr);
if (isnull) {*hist = NULL; PetscFunctionReturn(0);}
ierr = PetscHeaderCreate(h, PETSC_DRAWHG_CLASSID, "PetscDrawHG", "Histogram", "Draw", PetscObjectComm((PetscObject)draw), PetscDrawHGDestroy, NULL);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)draw,(PetscObject)h);CHKERRQ(ierr);
ierr = PetscObjectReference((PetscObject)draw);CHKERRQ(ierr);
h->win = draw;
h->view = NULL;
h->destroy = NULL;
h->color = PETSC_DRAW_GREEN;
h->xmin = PETSC_MAX_REAL;
h->xmax = PETSC_MIN_REAL;
h->ymin = 0.;
h->ymax = 1.;
h->numBins = bins;
h->maxBins = bins;
ierr = PetscMalloc1(h->maxBins,&h->bins);CHKERRQ(ierr);
h->numValues = 0;
h->maxValues = CHUNKSIZE;
h->calcStats = PETSC_FALSE;
h->integerBins = PETSC_FALSE;
ierr = PetscMalloc1(h->maxValues,&h->values);CHKERRQ(ierr);
ierr = PetscLogObjectMemory((PetscObject)h,(h->maxBins + h->maxValues)*sizeof(PetscReal));CHKERRQ(ierr);
ierr = PetscDrawAxisCreate(draw,&h->axis);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)h,(PetscObject)h->axis);CHKERRQ(ierr);
*hist = h;
PetscFunctionReturn(0);
}
/*@
PetscDrawLGCreate - Creates a line graph data structure.
Collective on PetscDraw
Input Parameters:
+ draw - the window where the graph will be made.
- dim - the number of curves which will be drawn
Output Parameters:
. outlg - the line graph context
Level: intermediate
Notes: The MPI communicator that owns the PetscDraw owns this PetscDrawLG, but the calls to set options and add points are ignored on all processes except the
zeroth MPI process in the communicator. All MPI processes in the communicator must call PetscDrawLGDraw() to display the updated graph.
Concepts: line graph^creating
.seealso: PetscDrawLGDestroy(), PetscDrawLGAddPoint(), PetscDrawLGAddCommonPoint(), PetscDrawLGAddPoints(), PetscDrawLGDraw(), PetscDrawLGSave(),
PetscDrawLGView(), PetscDrawLGReset(), PetscDrawLGSetDimension(), PetscDrawLGGetDimension(), PetscDrawLGSetLegend(), PetscDrawLGGetAxis(),
PetscDrawLGGetDraw(), PetscDrawLGSetUseMarkers(), PetscDrawLGSetLimits(), PetscDrawLGSetColors(), PetscDrawLGSetOptionsPrefix(), PetscDrawLGSetFromOptions()
@*/
PetscErrorCode PetscDrawLGCreate(PetscDraw draw,PetscInt dim,PetscDrawLG *outlg)
{
PetscDrawLG lg;
PetscErrorCode ierr;
PetscFunctionBegin;
PetscValidHeaderSpecific(draw,PETSC_DRAW_CLASSID,1);
PetscValidLogicalCollectiveInt(draw,dim,2);
PetscValidPointer(outlg,3);
ierr = PetscHeaderCreate(lg,PETSC_DRAWLG_CLASSID,"DrawLG","Line Graph","Draw",PetscObjectComm((PetscObject)draw),PetscDrawLGDestroy,NULL);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)draw,(PetscObject)lg);CHKERRQ(ierr);
ierr = PetscDrawLGSetOptionsPrefix(lg,((PetscObject)draw)->prefix);CHKERRQ(ierr);
ierr = PetscObjectReference((PetscObject)draw);CHKERRQ(ierr);
lg->win = draw;
lg->view = NULL;
lg->destroy = NULL;
lg->nopts = 0;
lg->dim = dim;
lg->xmin = 1.e20;
lg->ymin = 1.e20;
lg->xmax = -1.e20;
lg->ymax = -1.e20;
ierr = PetscMalloc2(dim*CHUNCKSIZE,&lg->x,dim*CHUNCKSIZE,&lg->y);CHKERRQ(ierr);
ierr = PetscLogObjectMemory((PetscObject)lg,2*dim*CHUNCKSIZE*sizeof(PetscReal));CHKERRQ(ierr);
lg->len = dim*CHUNCKSIZE;
lg->loc = 0;
lg->use_markers = PETSC_FALSE;
ierr = PetscDrawAxisCreate(draw,&lg->axis);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)lg,(PetscObject)lg->axis);CHKERRQ(ierr);
*outlg = lg;
PetscFunctionReturn(0);
}
void PETSC_STDCALL petscdrawaxiscreate_(PetscDraw draw,PetscDrawAxis *axis, int *__ierr ){
*__ierr = PetscDrawAxisCreate(
(PetscDraw)PetscToPointer((draw) ),axis);
}